膜科学与技术

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Determination of gelation temperature for Polyvinylidene Fluoride (PVDF) solution by viscosity measurement

Authors： Yong Yin, Xuemei Li, Tao He*

Units： 1State-Key Lab of Material Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009

KeyWords： PVDF; viscosity measurement; gelation temperature; thermodynamics

ClassificationCode：TQ050.4+25;TQ028.8

year,volume(issue):pagination： 2011,31(5):40-45

Abstract：

The gelation temperature of PVDF/DMAc/DEG ternary solution was determined by viscosity measurement. The effect of the shear rate, PVDF concentration, approaching value and aging time were investigated. Results indicated that the gelation temperature is not related to the shear rate, however increases with PVDF concentration, approaching value and aging time. The new method in determination of gelation temperature is simple, accurate for investigating polymer solution thermodynamic

Funds：

科学技术部中小企业创新基金(No.08C26223201857), 国家重大基础研究973项目(No.2009CB623402),材料化学工程国家重点实验室基金(NoZK200804),自然科学基金No. 20976083

AuthorIntro：

殷勇（1984-）,女,河南南阳人,硕士研究生,主要从事有机高分子膜制备和应用的研究.( yinan1984@126.com).

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