Dispersed elastomeric micro-particles

Dispersed elastomeric micro-particles preferentially break (bright spots) with the development of crazes around the broken rubber domain as evident from Fig. 

In many cases, toughening of a brittle polymer can be achieved by introduction of stiffness heterogeneity, viz. incorporation of an elastomer, immiscible polymer, sohd particles, gas bubbles (i.e., foaming or micro-foaming), etc. However, the size and concentration of these heterogeneities should be optimized. For most thermoplastic s the optimum diameter of the dispersed elastomeric particle is d < 3 jj.m and its volume fraction ... 

Elastomeric conductive polymers have been used for various electrical applications. In general, conductive polymers consist of conductive particles dispersed into a durable polymer matrix such as silicone rubber. Elastomeric conductive polymers are very suitable for high density micro-sized electrical connector or keyboard switches, because conductivity and elasticity can be obtained in one simple material.l" ... 

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