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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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层状纳米纤维素膜/PVA复合水凝胶的制备与力学性能研究
DOI: 10.3724/SP.J.1105.2012.11171, PP. 351-356
Keywords: 聚乙烯醇,水凝胶,纳米细菌纤维素,力学性能,界面
Abstract:
采用叠层复合与物理相分离的方法制备了层状纳米细菌纤维素(BC)膜/聚乙烯醇(PVA)复合水凝胶.研究了聚乙烯醇的质量百分数、BC膜的复合层数以及制备条件对复合水凝胶力学性能的影响;通过扫描电镜(SEM)观察比较了复合水凝胶中BC膜层与PVA界面结合情况.结果表明,复合水凝胶的力学性能与PVA的质量百分数和BC膜含水量、BC膜的层数以及制备条件有关.PVA质量百分数较高,流动性变差,界面结合差,导致复合水凝胶力学性能下降.当PVA质量百分数为15%、BC膜的层数为2层时,在相同的温度和条件下制备的复合水凝胶界面黏结良好,弹性模量、抗拉强度为7.82、1.74MPa.
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