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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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聚乙烯醇/层状双金属氢氧化物复合膜的原位制备及其性能研究
DOI: 10.11777/j.issn1000-3304.2015.14412, PP. 699-705
Keywords: 原位制备,聚乙烯醇,层状双金属氢氧化物,力学性能,透光性能
Abstract:
采用一步水热法,原位制备了聚乙烯醇(PVA)/层状双金属氢氧化物(LDH)复合材料(PVA/LDH).与溶液共混法相比,原位生成法具有实验操作简单、制备周期短等优势.广角X射线衍射(WXRD)结果显示,利用该方法可在PVA溶液中原位生成晶型完整的LDH片状粒子.与溶液共混法制备所得复合体系的流变行为不同,原位合成体系在低剪切速率下的表观黏度随LDH含量的增加而下降.得益于LDH在PVA中的良好分散,填料含量为1.0wt%时,复合膜的力学拉伸强度及弹性模量较纯PVA膜分别提高105.40%和133.20%.在保持复合材料高透光性基础上,薄膜的耐水性也有一定的提升,但其耐水蒸汽的提高仅当LDH含量达3.0wt%才有所体现.
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