1. BY
ARIIJIT CHAKRABORTY
M-PHARM (PHARMACOLOGY)
1 1 / 1 0 / 2 0 1 2
Thermo Mechanical Analysis
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2. Introduction
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Thermo mechanical Analysis (TMA) is
the study of the relationships between a
sample’s length (volume) and its temperature.
Volume is a fundamental
thermodynamic quantity.
Thermal expansively ( ) is a useful
engineering quantity:
= (dL/dt)/Lo

3. Instrumentation
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A thermo mechanical analyzer will
need to accurately measure both the
temperature of the sample, and very small
movements of a probe in contact with the
surface of the sample.
A typical analyzer as illustrated
uses a quartz probe containing a
thermocouple for temperature measurement
and couple to the core of a liner variable
differential transformer (LVDT).

4. Instrumentation
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5. Instrumentation
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6. TMA probes types
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7. Application of TMA
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Thermo mechanical analysis has
mainly been used in the study of polymers.
The properties study may be used to
characterize a polymer as well as to assess its
mechanical utility.
Application of TMA is following
bellow:

8. TMA temperature calibration
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9. Thermal expansion of aluminum
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10. Effect of cross linking on TMA penetration
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11. Effect of plasticizers
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12. Relationship between hardness and indentation
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13. Measurement of lipids
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14. Effect of chemical structure
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15. Effect of thermal history
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16. Reference
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1. Chatwal and Anand, Instrumental Methods
of Chemical Analysis, Himalaya, Page no.
2.753 -2.755.
2. Duncan Price, IPTME, Loughborough
University, Thermo mechanical analysis
presentation.

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