The variation of ~/o with amylose fraction is analysed, separating the effect of the polymer concentration from the effect of temperature. This gives a critical amylose volume fraction ~0"=0.14 for the onset of entanglements. The corresponding critical molecular weight, Mc=29400 fulfils correlations recently presented in the literature, in particular the correlation between critical end-to-end distance and molecular chain diameter.
Посилання на статтю:
The onset of entangled behaviour in amylose solutions / B. dauregui, M. E. Mufioz and A. Santamaria // Polymer. – 1993. – Vol 34. – P. 1776-1779.