Question

Nanoparticles are often added to polymer matrix to enhance various properties, the interaction with the polymer largely determines the state of the nanoparticle in the polymer matrix. Describe two of these state and one dispersing method that can achieved the most desirable state.

please no hand writing

Answer 1

Two possible dispersion states for nanoparticles within a polymer matrix:

a) a uniform dispersion,

b) a more realistic dispersion with two small clusters of particles. Deviations from uniformity reduce the volume of the reinforced polymer and increase the size of the unreinforced polymer domains.

A uniform dispersion provides efficient reinforcement. The benefits of the uniform dispersion are so intuitive that justification rarely accompanies assertions that uniform is optimal.

A good dispersion is a key challenge to achieve the best possible combination of matrix-nanoparticles. For that, a new dispersion technique high shear mixer was used.The sonication and manual preparations are few other techniques used for dispersion.The size of particles agglomerates was significantly reduced with this high shear mixing technique resulting in a well-dispersed and homogeneous blend.