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Polymer Nanocomposite

Presented By:-

Prakash Bharadwaj Date:- 23/09/2016

7230916709

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What are nanotechnology? 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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Carbon nano tube

graphite clay

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Polymer nanocomposites 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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Polymer nanocomposites are classified as:-

1.Thermoplastic-based nanocomposites 2.Thermoset-based nanocomposites

3.Elastomer-based nanocomposites

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Methods of preparation of PMNC:-1. solution casting:-

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2.Melt Blending

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3. in-situ polymerization:-

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1.Electrical properties :-Properties' of PMNC:-

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

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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.

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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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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 membranes6.Products with low flammability

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THANK YOU