Chain Dynamics in Solid Polymers and Polymerizing Systems as Revealed by Broadband Dielectric Spectroscopy
Chain Dynamics in Solid Polymers and Polymerizing Systems as Revealed by Broadband Dielectric Spectroscopy
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宽带介电谱揭示固体聚合物和聚合系统中的链动力学
DOI：
10.1002/masy.200951201
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发表时间：
2008
影响因子：
--
通讯作者：
Graham Williams
中科院分区：
文献类型：
--
作者：
Graham Williams
宽带介电谱（BDS）为研究固体聚合物的链动力学提供了一种直接、有力的手段。本工作讨论了实验数据，唯象理论，分子理论和最近的分子动力学模拟的弛豫函数和平均弛豫时间的多个介电弛豫观察到的无定形聚合物。BDS的当前应用的例子给出，包括超薄聚合物膜的动力学和实时研究（i）本体聚合物的结晶行为和（ii）热聚合系统的研究。
Broadband Dielectric Spectroscopy (BDS) provides a direct, powerful means of studying the chain dynamics of solid polymers. The present work discusses experimental data, phenomenological theories, molecular theories and recent molecular dynamics simulations of the relaxation functions and average relaxation times for the multiple dielectric relaxations observed for amorphous polymers. Examples of current applications of BDS are given, including studies of the dynamics of ultra-thin polymer films and real-time studies of (i) the crystallization behaviour of bulk polymers and (ii) thermo-polymerizing systems.