Strain-induced crystallization of natural rubber: Effect of proteins and phospholipids

摘要

Strain-induced crystallization of natural rubber (NR) during uni-axial deformation was studied in real time by synchrotron wide angle X-ray diffraction (WAXD) technique. Strain-induced crystallization of NR was investigated together with the effect of proteins and phospholipids on stress-strain behavior. Proteins and phospholipids in NR were decomposed by deproteinization and lipase treatment, respectively. The naturally occurring network, formed by proteins and phospholipids, was found to be responsible for high stress-strain behavior and crystallizability of un-vulcanized NR on stretching. The effect of naturally occurring network in vulcanized natural rubber was also investigated. It was found that the naturally occurring network plays a role even in vulcanized rubber.