形变聚合物中各向异性弛豫的标度行为
软凝聚态物质
2018-09-19 v2
摘要
借鉴准弹性中子散射的范式，我们提出一种利用小角中子散射定量研究形变聚合物中结构各向异性弛豫的时空依赖性的通用方法。对宽分子量范围的聚合物熔体的实验与非平衡分子动力学模拟表明，其在较高动量转移与较短时间下的构象弛豫可由一简单标度律描述，弛豫速率正比于。这一奇特的标度行为无法由经典Rouse与管模型导出，表明缠结对单链各向异性弛豫的微观机制的直接影响出人意料地弱。
引用
@article{arxiv.1802.09002,
title = {Scaling Behavior of Anisotropy Relaxation in Deformed Polymers},
author = {Christopher N. Lam and Wen-Sheng Xu and Wei-Ren Chen and Zhe Wang and Christopher B. Stanley and Jan-Michael Y. Carrillo and David Uhrig and Weiyu Wang and Kunlun Hong and Yun Liu and Lionel Porcar and Changwoo Do and Gregory S. Smith and Bobby G. Sumpter and Yangyang Wang},
journal= {arXiv preprint arXiv:1802.09002},
year = {2018}
}