| 聚乙烯醇水溶液的剪切流变行为 |
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| 引用本文： | 高瀚文,何吉宇,杨荣杰,杨磊. 聚乙烯醇水溶液的剪切流变行为[J]. 高分子材料科学与工程, 2010, 0(3): 65-67,71 |
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| 作者姓名： | 高瀚文 何吉宇 杨荣杰 杨磊 |
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| 作者单位： | 北京理工大学材料科学与工程学院; |
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| 摘 要： | 研究了不同浓度和分子量的聚乙烯醇(PVA)水溶液的流变性能。讨论了剪切速率和温度对PVA水溶液的表观黏度、非牛顿指数和粘流活化能的影响。实验结果表明,随剪切速率增加,不同浓度和聚合度样品间黏度的差别降低,所有PVA水溶液均显示剪切变稀行为。随PVA浓度提高,溶液的非牛顿指数是先增大后降低。同时发现剪切速率的变化影响PVA水溶液黏度的温度依赖性。
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| 关 键 词： | 聚乙烯醇 溶液 流变性能 |
Shearing Rheological Behavior of Poly(Vinyl Alcohol) Aqueous Solutions |
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| GAO Han-wen,HE Ji-yu,YANG Rong-jie,YANG Lei. Shearing Rheological Behavior of Poly(Vinyl Alcohol) Aqueous Solutions[J]. Polymer Materials Science & Engineering, 2010, 0(3): 65-67,71 |
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| Authors: | GAO Han-wen HE Ji-yu YANG Rong-jie YANG Lei |
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| Affiliation: | School of Materials Science and Engineering;Beijing Institute of Technology;Beijing 100081;China |
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| Abstract: | This paper described the rheological properties of a number of aqueous solutions of polyvinyl alcohol(PVA)as a function of the concentration and molecular weight.The effect of shear rate and temperature on the apparent viscosity,non-Newtonian exponent and flow activation energy of the PVA solutions was discussed.The experiment results indicate that the differences in viscosity between PVA solutions decreases,and shear thinning behavior can be observed.The value of n shows an increase with initial increase o... |
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| Keywords: | poly(vinyl alcohol) aqueous solution rheological property |
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