| 黏度法测定聚偏氟乙烯溶液凝胶分相温度 |
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| 引用本文： | 殷勇,李雪梅,何涛. 黏度法测定聚偏氟乙烯溶液凝胶分相温度[J]. 膜科学与技术, 2011, 31(5): 40-45 |
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| 作者姓名： | 殷勇 李雪梅 何涛 |
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| 作者单位： | 1. 材料化学工程国家重点实验室,南京工业大学化学与化工学院,南京210009
2. 材料化学工程国家重点实验室,南京工业大学化学与化工学院,南京210009;先进材料科学与工程中心,中国科学院上海高等研究院,上海201203 |
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| 基金项目： | 科学技术部中小企业创新基金(08C26223201857); 国家重大基础研究973项目(2009CB623402); 材料化学工程国家重点实验室基金(ZK200804); 自然科学基金(20976083) |
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| 摘 要： | 采用黏度法测定了聚偏氟乙烯/N,N-二甲基乙酰胺/一缩二乙二醇体系的凝胶分相温度,考察了黏度计转子的转速、高分子浓度、溶液的邻近比及熟化时间对溶液凝胶分相温度的影响.结果显示高分子溶液凝胶分相温度与黏度计转子的转速无关,但随着高分子浓度、溶液的邻近比及熟化时间的增加而升高.黏度法来确定PVDF溶液的凝胶分相温度是一种简...
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| 关 键 词： | 聚偏氟乙烯 黏度法 凝胶分相温度 热力学 |
Determination of gelation temperature for polyvinylidene fluoride(PVDF) solution by viscosity measurement |
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| YIN Yong,LI Xuemei,HE Tao. Determination of gelation temperature for polyvinylidene fluoride(PVDF) solution by viscosity measurement[J]. Membrane Science and Technology, 2011, 31(5): 40-45 |
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| Authors: | YIN Yong LI Xuemei HE Tao |
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| Affiliation: | YIN Yong1,LI Xuemei1,HE Tao1,2(1.State-Key Lab of Material Oriented Chemical Engineering,College of Chemistry andChemical Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | The gelation temperature of PVDF/DMAc/DEG ternary solution was determined by viscosity measurement.The effects of shear rate,PVDF concentration,approaching value and aging time on the gelation temperature were investigated.The results indicate that the gelation temperature is not related to the shear rate,however increases with PVDF concentration,approaching value and aging time.The new method for the determination of gelation temperature is simple,accurate for investigating polymer solution thermodynamics. |
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| Keywords: | viscosity measurement gelation temperature thermodynamics |
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