Molecular weight between physical entanglements in natural rubber: A critical parameter during strain-induced crystallization
Molecular weight between physical entanglements in natural rubber: A critical parameter during strain-induced crystallization
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DOI：
10.1016/j.polymer.2006.12.031
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发表时间：
2007-02-09
期刊：
影响因子：
4.6
通讯作者：
Gauthier, Catherine
中科院分区：
文献类型：
--
作者：
Chenal, Jean-Marc;Chazeau, Laurent;Gauthier, Catherine
本文的目的是阐明天然橡胶的交联密度对其应变诱导结晶的作用。在弱硫化天然橡胶和高硫化天然橡胶的拉伸过程中，进行了一系列新的同步辐射X射线衍射原位实验。实验数据进行了分析的微晶尺寸和结晶速率。此外，对以前公布的可能看起来相互矛盾的数据进行了仔细处理。来自不同来源和具有不同交联状态的NR的所有这些数据之间的比较表明，天然橡胶中物理缠结之间的分子量似乎是应变诱导结晶（SIC）的关键参数。(c)2006爱思唯尔有限公司保留所有权利。
The purpose of this paper is to clarify the role of crosslink density of natural rubber on its strain-induced crystallization. A series of new in situ synchrotron X-ray diffraction experiments were performed during the stretching process of weakly and highly vulcanized natural rubber samples. The experimental data have been analysed in terms of both crystallite size and crystallization rate. Moreover, a careful treatment of previously published data that might appear contradictory has been done. The comparison between all these data, coming from NR of different origins and with different crosslinking states, demonstrates that the molecular weight between physical entanglements in natural rubber appears as a key parameter for strain-induced crystallization (SIC). (c) 2006 Elsevier Ltd. All rights reserved.