• What is acrylic
• How does it manufacture
• What are the physical property and chemical property
• What are the advantage and limitation with it
• Where it is use
• Possibilities of using acrylic
What is acrylic ?
• A useful, clear plastic that resembles glass but
superior to glass in many ways.
• Thermoplastic, amorphous and transparent
• Commonly called acrylic glass
• Developed in 1928 in various laboratories and
was brought to market in 1933 by rohm & hass
Molecular Formula (C5O2H8)n
IUPAC Name: poly –[(1-methoxy
How does it manufacture ?
Acetone is first reacted with hydrogen-cynaid to give acetone cyano-hydrin
C=O + HCN CH3 - C –OH
The cyano-hydrin is then treated with 98%sulphuric acid in a cooled hydrolysis kettle to yield
CH3 – C - OH + H2SO4 CH2 = C
CN CONH2. H2SO4
The sulphate is not isolated from the reaction mixture , which passes into an esterification
kettle and reacts continously with methanol.
CH2 = C + CH3OH CH2 = C + NH4H2SO4
processing in melt state such injection moulding (common) and
manipulation of sheets tubes and rod
use of monomer polymer dough
Quick factsMolecular weight ~10-6
Specific gravity 1.19
Tensile modulus ~430 MPa
Water absorptions 0.2%
Heat deflection(1.82MPa) 100
Refractive index nD
Volume resistivity(20°C) >106
Dielectric constant at 103
Density 1.19 g/cm³
Melting Point 130-140 °C (265-285 °F)
Boiling Point 200.0 °C (392 °F)
Electric insulation good for low frequency but inferior to other plastics
Transparency total white light transmittance is 92%
the highest possible transmittance physically
Breakage Resistance 6 -17 times greater impact resistance than glass (in thicknesses of
glass 125" to .250)
reduces the hazard of injury because it breaks into large dull edged
pieces which disperse at low velocity,
Weather Resistance extremely good weather resistance, compared with other
Combustibility Self ignition temperature is between 850°F -869°F.
the temprature at which material will ignite in the presence of a flame
is between 550°F- 570°F.
it burns vigorously and generates heat rapidly when involved in fire.
the primary products of acrylic combustion are carbon monoxide and
however, burning acrylic plastic does not produce either excessive quantities of smoke or
gasses more toxic than those produced by burning wood or paper.
Heat Resistance The maximum service temperature 180°F-200°F
acrylics respond to heat, not affected by cold will not become
cracked or brittle in cold
Chemical Resistance has excellent resistance to inorganic alkalis and acids
-ammonia and sulfuric acid,
-aliphatic hydrocarbons such as hexane, octane and
-Excellent resistance (no attack) to Mineral Oils.
It is attacked by the following chemicals:
-Chlorinated hydrocarbons Aromatic solvents such as
turpentine, benzene, and toluene.
-Ethyl and methyl alcohol.
-Organic acids such as acetic acid, phenols, lysol.
-Lacquer thinners and other esters, ketones, & ethers.
Poor resistance (not recommended for use) with Concentrated Acids, Alcohols,
Esters, Aromatic and Halogenated Hydrocarbons, Ketones, Vegetable Oils and
What are the limitations
and advantages with it.
more expensive than glass,
if exposed to a direct flame it will melt and eventually burn.
It is polar that's why it do not have insulation property as comparable to polyethylene
Acrylic just over one inch thick (32mm) is bullet resistant.
It is many times stronger than glass, making it much more impact resistant and
Falling against an acrylic shower door will not likely break it. eg Baseballs that crash
through glass windows will, in most cases, bounce off acrylic windows.
Acrylic also insulates better than glass, potentially saving on heating bills.
it is only half as heavy as glass.
They offer easy cleaning and high durability.
They are very clear and have high resistance to most of the chemicals and heat and
Adding to this favorable array of properties, a transparency rate of 92%
A unique property of plastic is its ability to be shaped. Bow-front aquariums
1. Doors and window
2. It is used as a light guide for the
backlights in TFT –LCDS
3. Bath room enclosures
4. fighter planes of WWII have acrylic bubble-
tops(which flies at speed less than mach
5. Airplane windows
6. display cases to showcase their products
7. Partition wall
8. hockey rink( spectator protection in ice
9. barriers to fish tanks
10. residential and commercial aquariums
11. the lenses of exterior lights of automobiles.
Motorcycle helmet visors
Police vehicles for riot control
to produce laser disc ,cd, dvd
Sign and boards
Transparent guard for food stuff,
machine and machine
In Nano technology as fiber optics
Decorative materials and award
1. Acrylic fabric was first developed by DuPont in
1944 and in 1950 it was commercially produced for
the first time.
2. Initially it was used for outdoor purposes
3. acryl fibers are made that contain 85% acrylo-
4. used in clothing, as a cheaper alternative to
cashmere, due to the similar feeling of the
5. disadvantages of this is that it tends to fuzz (or
pill) easily and it does not insulate the wearer
as well as cashmere.
6. The fiber is resistant to moths, oils, and
chemicals, and is very resistant to deterioration
from sunlight exposure.
7. static and pilling can be a problem.
8. It dyes very well and has excellent
It is resilient, retains its shape, and resists shrinkage and
It is quite varied in form and sometimes has an
appearance similar to wool or cotton.
a good drape-able quality.
It gives warmth without weight.
The fabric breathes, it absorbs and releases moisture
It is comfortable to wear and is a easy care fabric.
Uses of Acrylic Fabric
Apparel - sweaters, socks, fleece, circular knit apparel,
sportswear, and children-wear.
Home Fashions - Blankets, throws, upholstery, awnings,
outdoor furniture, rugs/floor coverings.
Process of making Acrylic Fabric
Acrylic fabric is produced from petrochemical known as
The fibers produced from acrylo-ntrile are either by dry spun
or wet spun.
In the dry spinning process, the polymers are dissolved in a
suitable solvent, which is forcefully pushed into warm air for
solidification by the evaporation of the solvent. After the
spinning part is over, it is stretched hot from 3 to 10 times of
its original length and then crimped.
In the wet spinning process, the polymer is dissolved in
solvent and extruded into a coagulating bath. It is then dried,
crimped and collected as tow.
Acrylic in medicals
it has a good degree of compatibility with human tissue, and can
be used for replacement intracular lenses in the eye. when
the original lens has been removed in the treatment of
Hard contact lenses are frequently made of this material.
In orthopedics' PMMA bone cement is used to affix implants and
to remodel lost bone.)
PMMA has also been linked to cardiopulmonary events in the
operating room due to hypotension.
A big disadvantage to this bone cement is that it heats to quite a
high temperature while setting and because of this it kills the
bone in the surrounding area.
dentures are often made of PMMA, and can be colors-matched to
the patient's teeth & gum tissue.
In cosmetic surgery, tiny PMMA microspheres suspended in
some biological fluid are injected under the skin to reduce
wrinkles or scars permanently.
acrylic nails. They are basically made by mixing a particular
powder and liquid. Basically, those who are unable to
naturally grow their nails for varied reasons opt for this.
Acrylic paint is fast-drying paint containing pigment
suspended in an acrylic polymer emusion.
Acrylic paints can be diluted with water, but become
water-resistant when dry.
Acrylics were first made commercially available in the
1950s. These were minral sprit based paints called
magna offered by bocour artist colour.
Acrylic paints can be used in high gloss or matte finishes.
it yellows, turns brittle and cracks over time. Though this might be true
of very cheap forms of plastic, it is not so with acrylic. For example, the
fighter planes of WWII have acrylic bubble-tops. Airplane windows are
If taken care of, acrylic remains new looking regardless of age or
exposure to sun.
Some people worry that acrylic scratches too easily, but unlike glass,
scratches can be easily buffed out of acrylic.
The world is exploring more with this material