Spinodal phase separation and isothermal crystallization behavior in blends of VDF/TrFE(75/25) copolymer and poly(1,4-butylene adipate) (I)Spinodal phase separation behavior

被引：0
作者：
Kap Jin Kim
Thein Kyu
机构：
[1] Kyung Hee University,Department of Polymer and Fiber Materials Engineering, College of Environment and Applied Chemistry
[2] The University of Akron,Institute of Polymer Engineering
来源：
Fibers and Polymers | 2003年 / 4卷
关键词：
P(VDF/TrFE); Poly(1,4-butylene adipate); Miscible blend; Spinodal phase separation;
D O I：
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学科分类号：
摘要：
Phase behavior and spinodal phase separation kinetics in binary blends of a random copolymer of vinylidene fluoride and trifluoroethylene (75/25) [P(VDF/TrFE)] and poly(1,4-butylene adipate) (PBA) have been investigated by means of optical microscopic observation and time-resolved light scattering. The blends exhibited a typical lower critical solution temperature (LCST)∼34 °C above the melting temperature of the P(VDF/TrFE) crystals over the entire blend composition range. P(VDF/TrFE) and PBA were totally miscible in the temperature gap between the melting point of P(VDF/TrFE) and the LCST. Temperature jump experiments of the 3/7 P(VDF/TrFE)/PBA blend were carried out on a light-scattering apparatus from a single-phase melt state (180 °C) to a two-phase region (205∼215 °C). Since the late stage of spinodal decomposition (SD) is prevalent in the 3/7 blend, SD was analyzed using a power law scheme. Self-similarity was preserved well in the late stage of SD in the 3/7 blend.
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页码：188 / 194
页数：6
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