This document discusses polymer-matrix nanocomposites, which consist of a polymeric matrix with nanoscale particles dispersed within. Nanoparticles can control the fundamental properties of materials without changing their chemical composition. Polymer nanocomposites are classified as thermoplastic, thermoset, or elastomer based. They are prepared through methods like solution casting or melt blending. Polymer nanocomposites demonstrate improved electrical, optical, mechanical and barrier properties compared to conventional composites. Applications include the automobile sector, energy storage, coatings, and products requiring low flammability.

1. Presented By:-
Prakash Bharadwaj
Date:- 23/09/2016
19/24/2016
7230916709

2. Nanotechnology is the understanding and
control of matter at dimensions of roughly
1 to 100 nanometers.
A nanometer is one-billionth of a meter; a
sheet of paper is about 100,000
nanometers thick.
By creating nanometer-scale structures, it
is possible to control the fundamental
properties of materials, without changing
the materials' chemical compositions.
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3. Carbon nano tube
graphite clay
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4. Polymer-matrix nanocomposites consist of
a matrix made from a polymeric material
The second phase which is dispersed
within the matrix, has nanoscale
dimensions
the interface-to-volume ratio is significantly
higher than the conventional composites
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5. Polymer nanocomposites are classified
as:-
1.Thermoplastic-based nanocomposites
2.Thermoset-based nanocomposites
3.Elastomer-based nanocomposites
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6. Methods of preparation of PMNC:-
1. solution casting:-
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7. 2.Melt Blending
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8. 3. in-situ polymerization:-
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9. 1.Electrical properties :-
Properties' of PMNC:-
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the smaller the nanoparticles, the shorter the
distance between the particles,
This in turn leads to percolation at lower
volume fraction, resulting in higher electrical
conductivity

10. 2.Optical properties:-
.To achieve transparency, scattering must be
minimized
. which means that the nanoparticles should
be as small as possible
.while the index of refraction should remain
as similar as possible to the matrix.
excellent use of nanoparticles in polymer
nanocomposites is in controlling the index of
refraction. 10
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11. 3.Other properties:-
• Mechanical: increased modulus, strength,
toughness, elongation (in some cases)
• Chemical: improved solvent resistance,
improved moisture resistance
• Barrier: reduced oxygen, moisture
transmission
• Others: abrasion resistance, reduced
shrinkage
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12. Applications:-
1.automobile sectors
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2 .Energy storage systems and sensors

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3. Coatings
4. Gas barriers for plastic bottles, packaging
and sports goods
5. Optical glass and membranes
6.Products with low flammability

15. THANK YOU
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