Authors Brüning, K. ; Schneider, K. ; Roth, S. ; Heinrich, G.
Title Kinetics of strain-induced crystallization in natural rubber: A diffusion-controlled rate law
Date 18.08.2015
Number 47261
Abstract The kinetics of strain-induced crystallization in natural rubber were studied by synchrotron wide-angle X-ray diffraction (WAXD) in a strain jump setup over a broad temperature range. The increase of crystallinity after a strain jump was observed on a millisecond time scale, until a steady state plateau was approached. A novel model, based on chain dynamics scaling laws for diffusion in polymer networks was developed to interpret the time and temperature dependence of the strain-induced crystallization. In contrast to established thermal crystallization models, this model for the strain-induced crystallization proposes that the formation of stretched crystallizable chain segments takes place before the attachment to a growing crystallite. (C) 2015 Elsevier Ltd. All rights reserved.
Publisher Polymer
Citation Polymer 72 (2015) 52-58
Tags natural rubber strain-induced crystallization crystallization kinetics diffusion-controlled rate law synchrotron wide-angle x-ray diffraction x-ray-diffraction stress-induced crystallization dense polymer systems crack-tip relaxation crystal polyisoprene

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