Kinetics of phase separation of perfluorinated Nafion ionomer and poly(vinylidene flouride) blends

Jen Chang Yang, Thein Kyu

研究成果: 雜誌貢獻文章

17 引文 (Scopus)

摘要

Liquid-liquid phase separation was observed in the blends of Nafion and poly(vinylidene fluoride) (PVDF) above the crystal melting temperature of PVDF crystals. The kinetics of thermally induced phase separation in Nafion/PVDF blends was investigated by means of time-resolved small-angle light scattering. A temperature-composition phase diagram was established on the basis of cloud point measurements. The phase behavior is a lower critical solution temperature (LCST) type and reversible in character. Temperature-jump (T-jump) experiments were undertaken from room temperature to 220 and 240°C. Phase separation was dominated by the late stages of spinodal decomposition. The time evolution of scattering curves was analyzed in the context of nonlinear theories and dynamic scaling laws.
原文英語
頁(從 - 到)182-186
頁數5
期刊Macromolecules
23
發行號1
出版狀態已發佈 - 一月 8 1990
對外發佈Yes

指紋

Ionomers
Phase separation
Kinetics
Spinodal decomposition
Temperature
Crystals
Scaling laws
Liquids
Phase behavior
Light scattering
Phase diagrams
Melting point
Scattering
perfluorosulfonic acid
Chemical analysis
polyvinylidene fluoride
Experiments

ASJC Scopus subject areas

  • Materials Chemistry

引用此文

Kinetics of phase separation of perfluorinated Nafion ionomer and poly(vinylidene flouride) blends. / Yang, Jen Chang; Kyu, Thein.

於: Macromolecules, 卷 23, 編號 1, 08.01.1990, p. 182-186.

研究成果: 雜誌貢獻文章

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