Sunday, 23 September 2012

Elastomer (Rubber), Vulcanization of Rubber, Neoprene, Nitrile Rubber, B...


In Elastomer, the Polymer chains are held together by the weakest intermolecular forces. These weak forces permit the polymer to be stretched. A few cross-links are introduced in between the chains which help the polymer to released to its original position after the forces is released.

Buna-S: Buna-S is obtained by the polymerization of butadiene and styrene in presence of sodium metal.

Buna-N: Buna-N is obtained due to co-polymerization of two parts of butadiene with one part of acrylonitrile in pressure of sodium metal.

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