The onset of tube-like constraining effects in polydisperse polymer melts期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

The onset of tube-like constraining effects in polydisperse polymer melts

Authors:	G. Heinrich E. Straube

Affiliation:	(1) Sektion Physik, Technische Hochschule Carl Schorlemmer Leuna-Merseburg, DDR-4200 Merseburg, German Democratic Republic;(2) Sektion Werkstoff und Verarbeitungstechnik, DDR-4200 Merseburg, German Democratic Republic

Abstract:	Summary This paper describes the onset of the influence of entanglement effects on the mobility of polymer chains in a polydisperse melt. Extending a scaling relation between the critical molecular mass of homodisperse melts and segment number density yields in the case of polydisperse melts a functional equation for the critical chain length. The case of the normal distribution will be solved and discussed.

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