| 纳米SiO2增强聚乙烯醇缩乙醛凝胶的温敏性研究 |
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| 引用本文： | 周海鸥,孙梅,张璟焱.纳米SiO2增强聚乙烯醇缩乙醛凝胶的温敏性研究[J].化工新型材料,2011,39(10):82-84. |
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| 作者姓名： | 周海鸥 孙梅 张璟焱 |
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| 作者单位： | 安徽建筑工业学院材料与化学工程学院,合肥,230031 |
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| 基金项目： | 国家青年科学基金资助项目(21004001) |
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| 摘 要： | 以正硅酸乙酯(TEOS)前驱体,采用溶胶-凝胶法向部分缩醛的聚乙烯醇(APVA)水溶液中引入二氧化硅(SiC2)粒子,再通过冷冻/解冻法制备了温敏性聚乙烯醇缩乙醛(APVA)/二氧化硅(SiO2)复合凝胶.用扫描电镜、红外光谱和力学性能分析仪对产物的结构、微观形貌和力学性能进行了表征,并对其温敏性的影响因素进行了研究....
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| 关 键 词： | 聚乙烯醇 缩醛 二氧化硅 凝胶 温敏性 |
Synthesis and characterization of a thermo-sensitive APVA/SiO_2 composite hydrogels |
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| Zhou Haiou,Sun Mei,Zhang Jingyan.Synthesis and characterization of a thermo-sensitive APVA/SiO_2 composite hydrogels[J].New Chemical Materials,2011,39(10):82-84. |
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| Authors: | Zhou Haiou Sun Mei Zhang Jingyan |
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| Affiliation: | Zhou Haiou Sun Mei Zhang Jingyan(School of Minerals & Chemical Engineering,Anhui University of Architecture,Hefei 230031) |
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| Abstract: | NanoSiO2 was obtained from tetraethyl orthosilicate(TEOS) via a sol-gel process in partially acetalyzed poly(vinyl alcohol)(APVA) solution.Then APVA/SiO2 composite hydrogels were prepared using the method of freeze/thawing.The structure,morphology and tensile strength of the products were characterized by FT-IR spectrograph,scanning electron microscopy and mechanical property test machine.The thermo-sensitive mechanism was discussed and the effect of the degree of acetalysis on the lower critical solution t... |
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| Keywords: | poly(vinyl alcohol) acetal SiO2 hydrogel thermo-sensitivity |
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