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Access Type

Open Access

Degree Program

Polymer Science & Engineering

Degree Name

Thesis (M.S.)

Year Degree Awarded

1973

Keywords

Crystallization, Transpolybutadiene

Abstract

The distortion of molecular chains in amorphous crosslinked networks from their most probable configuration by Stretching gives rise to a decrease in configurational entropy. As a consequence, the tendency toward crystallization is so enhanced that even natural rubber can crystallize upon stretching at room temperature. e Crystallization developed in rubber strtched in sim- A pie extension has been directly investigated by X-ray, Ik density and other methods , When crystallization takes place in rubber upon stretching, the resulting crystallites prevent slippage of chain molecules past each other because these crystallites act as multifunctional crosslinkages . As a consequence, raw rubber docs not show any plastic flow at higher extensions. This was observed by Treloar^ from an experiment on the recovery of deformed rubber to its original length upon warming.

DOI

https://doi.org/10.7275/9m11-3269

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