A method of obtaining an Infrared spectrum by measuring the interferogram of a sample using an interferometer, then performing a Fourier Transform upon the interferogram to obtain the spectrum.
An Infrared spectrum represents a fingerprint of a sample with absorption peaks which correspond to the frequencies of vibrations between the bonds of the atoms making up the material-Because each different material is a unique combination of atoms, no two compounds produce the exact same spectrum, therefore IR can result in a unique identification of every different kind of material!
Fourier transform infrared spectroscopy: advantage and disadvantage of conventional infrared spectroscopy, introduction to FTIR ,principle of FTIR, working, advantage, disadvantage and application of FTIR.
Theory and Principle of FTIR head points:
What is Infrared Region?
Infrared Spectroscopy
What is FTIR?
Superiority of FTIR
FTIR optical system diagram
sampling techniques
The sample analysis process
advantage of FTIR
References
https://www.linkedin.com/in/preeti-choudhary-266414182/
https://www.instagram.com/chaudharypreeti1997/
https://www.facebook.com/profile.php?id=100013419194533
https://twitter.com/preetic27018281
Please like, share, comment and follow.
stay connected
If any query then contact:
chaudharypreeti1997@gmail.com
Thanking-You
Preeti Choudhary
A method of obtaining an Infrared spectrum by measuring the interferogram of a sample using an interferometer, then performing a Fourier Transform upon the interferogram to obtain the spectrum.
An Infrared spectrum represents a fingerprint of a sample with absorption peaks which correspond to the frequencies of vibrations between the bonds of the atoms making up the material-Because each different material is a unique combination of atoms, no two compounds produce the exact same spectrum, therefore IR can result in a unique identification of every different kind of material!
Fourier transform infrared spectroscopy: advantage and disadvantage of conventional infrared spectroscopy, introduction to FTIR ,principle of FTIR, working, advantage, disadvantage and application of FTIR.
Theory and Principle of FTIR head points:
What is Infrared Region?
Infrared Spectroscopy
What is FTIR?
Superiority of FTIR
FTIR optical system diagram
sampling techniques
The sample analysis process
advantage of FTIR
References
https://www.linkedin.com/in/preeti-choudhary-266414182/
https://www.instagram.com/chaudharypreeti1997/
https://www.facebook.com/profile.php?id=100013419194533
https://twitter.com/preetic27018281
Please like, share, comment and follow.
stay connected
If any query then contact:
chaudharypreeti1997@gmail.com
Thanking-You
Preeti Choudhary
Fourier Transform Infrared Spectroscopy-:A type of infrared spectroscopy.It is method of obtaining an infrared spectrum by measuring interferogram and then performimg a Fourier Transform upon the interferogram to obtain the spectrum.
describes the complete history, mechanisms, instrumentation(jablonski diagram), types, comparision and factors affecting, applications of fluorescence and phosphorescence and describes about quenching and stokes shift.
Raman Spectroscopy - Principle, Criteria, Instrumentation and ApplicationsPrabha Nagarajan
Basic principle of Raman scattering- Difference between Rayleigh and Raman Scattering- Major criteria for Raman active in compounds,-Stroke's lines and Anti-stoke lines- Difference and between IR and Raman spectroscopy- Wide applications of Raman spectroscopy.
CHECKOUT THIS NEW WEB BROWSER :
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Infrared spectroscopy (IR spectroscopy) is the spectroscopy that deals with the infrared
region of the electromagnetic spectrum, that is light with a longer wavelength and
lower frequency than visible light.
Infrared Spectroscopy is the analysis of infrared light interacting with a molecule.
Fourier Transform Infrared Spectroscopy-:A type of infrared spectroscopy.It is method of obtaining an infrared spectrum by measuring interferogram and then performimg a Fourier Transform upon the interferogram to obtain the spectrum.
describes the complete history, mechanisms, instrumentation(jablonski diagram), types, comparision and factors affecting, applications of fluorescence and phosphorescence and describes about quenching and stokes shift.
Raman Spectroscopy - Principle, Criteria, Instrumentation and ApplicationsPrabha Nagarajan
Basic principle of Raman scattering- Difference between Rayleigh and Raman Scattering- Major criteria for Raman active in compounds,-Stroke's lines and Anti-stoke lines- Difference and between IR and Raman spectroscopy- Wide applications of Raman spectroscopy.
CHECKOUT THIS NEW WEB BROWSER :
https://www.entireweb.com/?a=618b79ed612f3
Infrared spectroscopy (IR spectroscopy) is the spectroscopy that deals with the infrared
region of the electromagnetic spectrum, that is light with a longer wavelength and
lower frequency than visible light.
Infrared Spectroscopy is the analysis of infrared light interacting with a molecule.
Fourier Transform Infrared Spectrometry (FTIR) and TextileAzmir Latif Beg
Fourier-transform infrared spectroscopy (FTIR) is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid or gas. FTIR offers quantitative and qualitative analysis for organic and inorganic samples. Fourier Transform Infrared Spectroscopy (FTIR) identifies chemical bonds in fiber. By FTIR we only know the name of fiber is identified. By this technique we can identify the exact composition of fiber like 80 % polyester 20 % cotton.
FTIR SPECTROSCOPY,
Principle, Theory, Instrumentation and Application in Pharmaceutical Industry
IR Spectroscopy- Absorption Theory
Type of Vibrations & Vibration Energy level
FTIR Spectrophotometer-Instrumentation
Operation of the Spectrophotometer
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IR Absorption by Organic compounds
Application
FDA citation in FTIR Analysis-Pharmaceutical Industries
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The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
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Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
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In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
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Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
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Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
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2. Content
Introduction
o Brief history of development of FTIR
o Theoretical background
Mathematical expressions of Fourier transforms
Components of FTIR spectroscopy
The working principles of Michelson interferometer
Generating the spectrum
Principle of Absorption
FT-IR Analysis
Characterization of textile fibers by FTIR spectra
Advantages of FT-IR
Limitation of FTIR
Application of FT-IR in Textiles
Reference
Content
Introduction
o Brief history of development of FTIR
o Theoretical background
Mathematical expressions of Fourier transforms
Components of FTIR spectroscopy
The working principles of Michelson interferometer
Generating the spectrum
Principle of Absorption
FT-IR Analysis
Characterization of textile fibers by FTIR spectra
Advantages of FT-IR
Limitation of FTIR
Application of FT-IR in Textiles
Reference
3. BRIEF HISTORY OF DEVELOPMENT OF FTIR
FT-IR spectrometry was developed in order to overcome the
limitations encountered with dispersive instruments.
The limitation of Dispersive was the slow scanning process and
measuring individual infrared frequencies.
A method for measuring all of the infrared frequencies
simultaneously and very simple optical was needed.
Fourier had developed mathematical transform (FT) method in 1700.
Albert Michelson had perfected FT-IR instrument in 1887 and design
the spectra of organic and his interferometer in 1891.
FT-IR was combined with personal computers to make widely used,
versatile, and cost-effective method of analysis in 1980s
FT-IR spectrometry was developed in order to overcome the
limitations encountered with dispersive instruments.
The limitation of Dispersive was the slow scanning process and
measuring individual infrared frequencies.
A method for measuring all of the infrared frequencies
simultaneously and very simple optical was needed.
Fourier had developed mathematical transform (FT) method in 1700.
Albert Michelson had perfected FT-IR instrument in 1887 and design
the spectra of organic and his interferometer in 1891.
FT-IR was combined with personal computers to make widely used,
versatile, and cost-effective method of analysis in 1980s
4. THEORETICAL BACKGROUND
Spectroscopy is the study of matter and its properties by
investigating light, sound, or particles that are emitted, absorbed or
scattered by the matter under investigation.
It is the study of the interaction between light and matter.
Infrared frequencies of light are used to study fundamental vibrations
and associated rotational-vibrational structure via vibrational
resonance and selective absorption.
Infrared SpectroscopyInfrared Spectroscopy
Spectroscopy is the study of matter and its properties by
investigating light, sound, or particles that are emitted, absorbed or
scattered by the matter under investigation.
It is the study of the interaction between light and matter.
Infrared frequencies of light are used to study fundamental vibrations
and associated rotational-vibrational structure via vibrational
resonance and selective absorption.
6. IR region is subdivided into three regions, near IR, mid IR and far IR.
7. Cont.…
Generally there are two types of infrared spectroscopy
Dispersive infrared spectroscopy
Fourier transform infrared spectroscopy
Dispersive spectrophotometers, which use a monochromatic to
produce an infrared spectrum one resolution element at a time.
Michelson interferometers, which use a moving mirror
adjustment to create an interferogram, from which all resolution
elements are determined simultaneously.
Generally there are two types of infrared spectroscopy
Dispersive infrared spectroscopy
Fourier transform infrared spectroscopy
Dispersive spectrophotometers, which use a monochromatic to
produce an infrared spectrum one resolution element at a time.
Michelson interferometers, which use a moving mirror
adjustment to create an interferogram, from which all resolution
elements are determined simultaneously.
8. FOURIER TRANSFORM INFRARED SPECTROSCOPY
FT-IR stands for Fourier Transform InfraRed, the preferred method
of infrared spectroscopy.
Fourier infrared spectroscopy is the study of interactions between
matter and electromagnetic fields in the IR region.
In this spectral region, the EM waves mainly couple with the
molecular vibrations.
A molecule can be excited to a higher vibrational state by absorbing
IR radiation.
It covers a range of techniques, mostly based on absorption spectroscopy
This makes infrared spectroscopy useful for several types of analysis.
FT-IR stands for Fourier Transform InfraRed, the preferred method
of infrared spectroscopy.
Fourier infrared spectroscopy is the study of interactions between
matter and electromagnetic fields in the IR region.
In this spectral region, the EM waves mainly couple with the
molecular vibrations.
A molecule can be excited to a higher vibrational state by absorbing
IR radiation.
It covers a range of techniques, mostly based on absorption spectroscopy
This makes infrared spectroscopy useful for several types of analysis.
10. Cont.…
FT-IR can provide the following information.
It can identify unknown materials
It can determine the quality or consistency of a sample
It can determine the amount of components in a mixture
Infrared spectroscopy can result in a positive identification
(qualitative analysis) of every different kind of material.
With modern software algorithms, infrared is an excellent tool for
quantitative analysis.
FT-IR can provide the following information.
It can identify unknown materials
It can determine the quality or consistency of a sample
It can determine the amount of components in a mixture
Infrared spectroscopy can result in a positive identification
(qualitative analysis) of every different kind of material.
With modern software algorithms, infrared is an excellent tool for
quantitative analysis.
11. MATHEMATICAL EXPRESSIONS OF FOURIER TRANSFORM
tTRANSFORMS FTIR spectrometer operates on a different principle called Fourier
transform.
The mathematical expression of Fourier transform can be expressed
as:
And the reverse Fourier transform is;
Where: ω is angular frequency and
x is the optical path difference.
F(ω) is the spectrum and
f(x) is called the interferogram.
i is called square root of -1
FTIR spectrometer operates on a different principle called Fourier
transform.
The mathematical expression of Fourier transform can be expressed
as:
And the reverse Fourier transform is;
Where: ω is angular frequency and
x is the optical path difference.
F(ω) is the spectrum and
f(x) is called the interferogram.
i is called square root of -1
12. Components of FTIR Spectroscopy
Source: Infrared energy is emitted from a glowing black-body source.
Interferometer: The beam enters the interferometer where the
“spectral encoding” takes place.
Sample: The beam enters the sample compartment where it is
transmitted through or reflected off of the surface of the sample.
The Detector: Detectors transform the input energy into an output then
converted to a signal.
The Computer: The measured signal is digitized and sent to the
computer where the Fourier transformation takes place.
Moving mirror: It is the only moving part of the instrument.
Fixed mirror: It is a stationary mirror
Source: Infrared energy is emitted from a glowing black-body source.
Interferometer: The beam enters the interferometer where the
“spectral encoding” takes place.
Sample: The beam enters the sample compartment where it is
transmitted through or reflected off of the surface of the sample.
The Detector: Detectors transform the input energy into an output then
converted to a signal.
The Computer: The measured signal is digitized and sent to the
computer where the Fourier transformation takes place.
Moving mirror: It is the only moving part of the instrument.
Fixed mirror: It is a stationary mirror
14. Working principles of Michelson Interferometer
Light from the light source is directed to the beam splitter.
Half of the light is reflected and half is transmitted.
The reflected light goes to the fixed mirror where it is reflected back
to the beam splitter.
The transmitted light is sent to the moving mirror and is also
reflected back towards the mirror.
At the beam splitter, each of the two beams (from the fixed and
moving mirrors) are split into two:
One goes back to the source and
The other goes towards the detector.
Light from the light source is directed to the beam splitter.
Half of the light is reflected and half is transmitted.
The reflected light goes to the fixed mirror where it is reflected back
to the beam splitter.
The transmitted light is sent to the moving mirror and is also
reflected back towards the mirror.
At the beam splitter, each of the two beams (from the fixed and
moving mirrors) are split into two:
One goes back to the source and
The other goes towards the detector.
15. Cont.
The two beams reaching the detector come from the same source and have
an optical path difference determined by the positions of the two mirrors,
That means they have a fixed phase difference and the two beams interfere.
The two beams interfere constructively or destructively for a particular
frequency by positioning the moving mirror.
If the moving mirror is scanned over a range, a sinusoidal signal will be
detected for that frequency with its
maximum corresponding to constructive interference and
minimum corresponding to destructive interference.
This sinusoidal signal is called interferogram – detector signal (intensity)
against optical path difference.
The two beams reaching the detector come from the same source and have
an optical path difference determined by the positions of the two mirrors,
That means they have a fixed phase difference and the two beams interfere.
The two beams interfere constructively or destructively for a particular
frequency by positioning the moving mirror.
If the moving mirror is scanned over a range, a sinusoidal signal will be
detected for that frequency with its
maximum corresponding to constructive interference and
minimum corresponding to destructive interference.
This sinusoidal signal is called interferogram – detector signal (intensity)
against optical path difference.
17. Generating the Spectrum
Interferogram is determined experimentally in FTIR spectroscopy,
and the corresponding spectrum – frequency against intensity plot,
is computed using Fourier transform.
This transformation is carried out automatically and the spectrum is
displayed.
The detector sees all the frequencies simultaneously.
It is imperative to record a relevant background spectrum for each
sample examined.
Interferogram is determined experimentally in FTIR spectroscopy,
and the corresponding spectrum – frequency against intensity plot,
is computed using Fourier transform.
This transformation is carried out automatically and the spectrum is
displayed.
The detector sees all the frequencies simultaneously.
It is imperative to record a relevant background spectrum for each
sample examined.
18. Cont.
Background spectrum:
The empty beam background (no sample in the light path) is
recorded first.
This spectrum shows the instrument energy profile.
Sample spectrum:
The sample is placed in the combined beam.
The sample spectrum is the ratio of the spectrum containing sample
against that of the background.
In recording the background spectrum, the light path should be made
as close to that of the sample spectrum as possible.
Background spectrum:
The empty beam background (no sample in the light path) is
recorded first.
This spectrum shows the instrument energy profile.
Sample spectrum:
The sample is placed in the combined beam.
The sample spectrum is the ratio of the spectrum containing sample
against that of the background.
In recording the background spectrum, the light path should be made
as close to that of the sample spectrum as possible.
19. Principle of Absorption
At temperatures above absolute zero, all the atoms in molecules are in
continuous vibration with respect to each other.
As a molecule vibrates , a regular fluctuation in the dipole moment
occurs.
A Dipole Moment = Charge Imbalance in the molecule
When the frequency of a specific vibration is equal to the frequency of
the IR radiation directed on the molecule, the molecule absorbs the
radiation and amplitude of the vibration increases.
At temperatures above absolute zero, all the atoms in molecules are in
continuous vibration with respect to each other.
As a molecule vibrates , a regular fluctuation in the dipole moment
occurs.
A Dipole Moment = Charge Imbalance in the molecule
When the frequency of a specific vibration is equal to the frequency of
the IR radiation directed on the molecule, the molecule absorbs the
radiation and amplitude of the vibration increases.
20. Cont.
The major types of molecular vibrations are Stretching and Bending
Stretching -along the line of the chemical bond
Bending - out of the line with the chemical bond.
The absorbed Infrared radiation and the associated energy is
converted into these type of motions.
Stretching > Bending
The major types of molecular vibrations are Stretching and Bending
Stretching -along the line of the chemical bond
Bending - out of the line with the chemical bond.
The absorbed Infrared radiation and the associated energy is
converted into these type of motions.
Stretching > Bending
23. FT-IR Analysis
In fiber characterization by FTIR, analysis is done in two ways:
1. Qualitative Analysis
For qualitative identification purposes, the spectrum is commonly presented as
transmittance vs wave number.
It is possible to identify a functional group of a molecule by comparing its
vibrational frequency on an IR spectrum to an IR stored data bank.
Functional groups have their characteristic fundamental vibrations which give rise
to absorption at certain frequency range in the spectrum.
However, several functional groups may absorb at the same frequency range, and
a functional group may have multiple-characteristic absorption peaks, especially
for 1500 – 650 cm-1, which is called the fingerprint region.
In addition, the size of the peaks in the spectrum is a direct indication of the
amount of material present.
In fiber characterization by FTIR, analysis is done in two ways:
1. Qualitative Analysis
For qualitative identification purposes, the spectrum is commonly presented as
transmittance vs wave number.
It is possible to identify a functional group of a molecule by comparing its
vibrational frequency on an IR spectrum to an IR stored data bank.
Functional groups have their characteristic fundamental vibrations which give rise
to absorption at certain frequency range in the spectrum.
However, several functional groups may absorb at the same frequency range, and
a functional group may have multiple-characteristic absorption peaks, especially
for 1500 – 650 cm-1, which is called the fingerprint region.
In addition, the size of the peaks in the spectrum is a direct indication of the
amount of material present.
24. Fingerprint RegionFingerprint Region
More complex and more difficult to interpret.
Small structural differences results in significant in spectral
differences
Complete interpretation impossible
Complete identification requires 100% match between sample’s and
standard’s spectra in the finger print region
26. Cont.
2. Quantitative Analysis
o Absorbance (A) is used for quantitative analysis due to its linear
dependence on concentration.
o It is given by Beer-Lambert law; absorbance is directly proportional
to the concentration and path length of sample:
Where:
A- is absorbance,
ε -the molar extinction coefficient or molar absorptivity,
c -the concentration and
l- the path length (or the thickness) of sample.
o Thus the intensity of the peaks in the FT-IR spectrum is proportional
to the amount of substance present, for identical ε and c.
A=ϵcl
2. Quantitative Analysis
o Absorbance (A) is used for quantitative analysis due to its linear
dependence on concentration.
o It is given by Beer-Lambert law; absorbance is directly proportional
to the concentration and path length of sample:
Where:
A- is absorbance,
ε -the molar extinction coefficient or molar absorptivity,
c -the concentration and
l- the path length (or the thickness) of sample.
o Thus the intensity of the peaks in the FT-IR spectrum is proportional
to the amount of substance present, for identical ε and c.
A=ϵcl
27. Characterization of Cotton by FTIR spectraCharacterization of Cotton by FTIR spectra
O-H- 3335cm-1 broad,
medium
2850 cm-1 CH2 stretch
1478 cm-1 ( H-C-H and H-O-
C bend),
1379cm-1, 1334 cm-1 (H-C-
C, H-C-O, and H-O-C bend),
1108cm-1 (C-C and C-O
stretch),
910 cm-1 ( C-O-C in plane,
symmetric), and
516-379 cm-1 (skeletal C-O-
C, C-C-C,O-C-C and O-C-O
bend)
O-H- 3335cm-1 broad,
medium
2850 cm-1 CH2 stretch
1478 cm-1 ( H-C-H and H-O-
C bend),
1379cm-1, 1334 cm-1 (H-C-
C, H-C-O, and H-O-C bend),
1108cm-1 (C-C and C-O
stretch),
910 cm-1 ( C-O-C in plane,
symmetric), and
516-379 cm-1 (skeletal C-O-
C, C-C-C,O-C-C and O-C-O
bend)
O-H- 3335cm-1 broad,
medium
2850 cm-1 CH2 stretch
1478 cm-1 ( H-C-H and H-O-
C bend),
1379cm-1, 1334 cm-1 (H-C-
C, H-C-O, and H-O-C bend),
1108cm-1 (C-C and C-O
stretch),
910 cm-1 ( C-O-C in plane,
symmetric), and
516-379 cm-1 (skeletal C-O-
C, C-C-C,O-C-C and O-C-O
bend)
O-H- 3335cm-1 broad,
medium
2850 cm-1 CH2 stretch
1478 cm-1 ( H-C-H and H-O-
C bend),
1379cm-1, 1334 cm-1 (H-C-
C, H-C-O, and H-O-C bend),
1108cm-1 (C-C and C-O
stretch),
910 cm-1 ( C-O-C in plane,
symmetric), and
516-379 cm-1 (skeletal C-O-
C, C-C-C,O-C-C and O-C-O
bend)Spectra of a single cotton fiber
28. Characterization of Polyester by FTIR spectraCharacterization of Polyester by FTIR spectra
Spectra of a single polyester fiber
30. ADVANTAGES OF FTIR
Fourier transform infrared spectroscopy is preferred over dispersive
or filter methods of infrared spectral analysis for several reasons:
It is a non-destructive technique
Speed
Sensitivity
Mechanical simplicity
Internally calibrated (self-calibrating)
Fourier transform infrared spectroscopy is preferred over dispersive
or filter methods of infrared spectral analysis for several reasons:
It is a non-destructive technique
Speed
Sensitivity
Mechanical simplicity
Internally calibrated (self-calibrating)
31. LIMITATIONS OF FTIR
It cannot be used to detect all the vibration modes in a molecule.
It is not possible to know molecular weight of substance
It is not possible to know whether it is pure compound or a mixture
of compound.
Interferogram are difficult to interpret without first performing a
Fourier transform to produce a spectrum.
Accuracy of FT-IR remains true if there is no change in atmospheric
conditions throughout the experiment.
It cannot be used to detect all the vibration modes in a molecule.
It is not possible to know molecular weight of substance
It is not possible to know whether it is pure compound or a mixture
of compound.
Interferogram are difficult to interpret without first performing a
Fourier transform to produce a spectrum.
Accuracy of FT-IR remains true if there is no change in atmospheric
conditions throughout the experiment.
32. Application of FT-IR in Textile
• Identification of compounds by matching spectrum of unknown
compound with reference spectrum (fingerprinting)
• Identification of functional groups in unknown substances
• Identification of reaction components and kinetic studies of reactions
• Identification of molecular orientation in polymer films.
• Detection of molecular impurities or additives present
• The same way it determines Percentage of trash particles or foreign
matter present in fiber, yarn or fabric.
• Identification of polymers, plastics, and resins.
• Identification of compounds by matching spectrum of unknown
compound with reference spectrum (fingerprinting)
• Identification of functional groups in unknown substances
• Identification of reaction components and kinetic studies of reactions
• Identification of molecular orientation in polymer films.
• Detection of molecular impurities or additives present
• The same way it determines Percentage of trash particles or foreign
matter present in fiber, yarn or fabric.
• Identification of polymers, plastics, and resins.