Correlations between dynamic fragility and dynamic mechanical properties of several amorphous polymers
Correlations between dynamic fragility and dynamic mechanical properties of several amorphous polymers
复制标题
几种非晶态聚合物的动态脆性与动态机械性能之间的相关性
DOI：
10.1016/j.jnoncrysol.2009.06.013
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发表时间：
2009-09
影响因子：
3.5
通讯作者：
Qu, Liangliang
中科院分区：
文献类型：
--
作者：
Huang, Guangsu;Zheng, Jing;Wu, Jinrong;Qu, Liangliang
在本文中，动态力学性能进行了测量，从强到脆的几个无定形聚合物。结果表明，高强度玻璃化聚合物的储能模量变化平稳，损耗模量峰和tanδ峰较宽。定义了陡度指数（S）、储能模量转变宽度（W）和tanδ积分面积（A）三个变量，以说明动态脆性指数（m）与动态力学性能之间的潜在相关性。发现W和A可以通过幂律方程与m相关，而S与m之间观察到指数关系。此外，随着m减小，tanδ峰越来越远离损耗模量峰和储能模量开始下降的点。这些现象解释链包装效率。
In the present paper, dynamic mechanical properties were measured for several amorphous polymers ranging from strong to fragile. The results indicate that the storage modulus changes steadily, and the loss modulus peak and the tanδ peak are broader for strong glass-forming polymers. Three variables, the steepness index (S), the transition wideness (W) of storage modulus and the integration area (A) of tanδ, were defined to illustrate the potential correlation between the dynamic fragility index (m) and the dynamic mechanical properties. It is found that W and A can be correlated with m by power law equations, while an exponential relationship between S and m is observed. Moreover, as m decreases, the tanδ peak is more and more apart from the loss modulus peak and the point where the storage modulus begins to drop. These phenomena are interpreted in terms of chain packing efficiency.
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影响因子：
3
作者：
Chan-Seok Park;Kieup Lee;J. Nam;Seong-Woo Kim
通讯作者：
Chan-Seok Park;Kieup Lee;J. Nam;Seong-Woo Kim
影响因子：
64.8
作者：
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通讯作者：
Sokolov, AP
影响因子：
8.6
作者：
Sokolov;Rössler;Kisliuk;Quitmann
通讯作者：
Sokolov;Rössler;Kisliuk;Quitmann
影响因子：
4
作者：
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通讯作者：
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影响因子：
3.2
作者：
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通讯作者：
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