Relaxation anomalies in linear polymer melts
Relaxation anomalies in linear polymer melts
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DOI：
10.1021/ma012167y
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发表时间：
2002-04-23
期刊：
影响因子：
5.5
通讯作者：
de Gennes, PG
中科院分区：
文献类型：
--
作者：
de Gennes, PG
4. Discussion4.1. Possible Role of Double Reptation. The simple reptation picture which has been used here has been augmented by des Cloizeaux. 8, 9 His model assumes that each entanglement is based on two chains (more complex knots are ignored). Then it may be argued that the memory function of interest M (t) is not the naive reptation function Mn (t) but is the square of it:(where all M’s are normalized to ensure M (0)) 1). This should hold even for polydisperse melts. If we accept eq 15, our prediction of stretched exponentials is maintained, and the values are unchanged.
