Studies on the Effects of the Third Phase on the Coarsening of Incompatible Polymer Blends

Abstract

Abstract: In this study, phase contrast microscope and computer image analyzer were used to study the coarsening process of the dispersed phase of the polymer blend (PP/EVAc) under 2 dimensional and 3 dimensional conditions. The results showed that under 3-dimensional condition, the growth of the dispersed phase follows r³～t^1.01, corresponding to the evaporation condensation theory of LifshitzSlyozov——r³～t, while under 2-dimensional condition the growth law is r³～t^1.32. The growth speed of the dispersed droplets under 2-dimensional condition is faster than that under 3-dimensional condition. This difference is caused by the wetting effects between the third phase and polymer blend.

Key words: Polypropylene, Ethylene-vinyl acetate copolymer, Coarsening, The third phase interface, Wetting effect

CLC Number:

O631

TrendMD:

XIE Xu-Ming, XIAO Tian-Jing, YANG Yong . Studies on the Effects of the Third Phase on the Coarsening of Incompatible Polymer Blends[J]. Chem. J. Chinese Universities, 1998, 19(11): 1864.

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Studies on the Effects of the Third Phase on the Coarsening of Incompatible Polymer Blends

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