聚乙烯醇/葡萄糖酸蒙脱土纳米复合材料的制备及表征  

Preparation and characterization of polyvinyl alcohol/gluconic acid montmorillonite nanocomposite materials

作　　者：姜宏鹏[1] 朱云倩[1] 韦藤幼[1,2] 潘远凤[1,2] 童张法[1,2] 

机构地区：[1]广西大学化学化工学院,南宁530004 [2]广西石化资源加工及过程强化技术重点实验室,南宁530004

出　　处：《化工新型材料》2011年第12期118-121,共4页New Chemical Materials

基　　金：国家自然科学基金资助项目(20766001;21076046)

摘　　要：为了改善聚乙烯醇的力学强度、耐水性及耐热性,采用纳米葡萄糖酸蒙脱土对聚乙烯醇进行了物理复合改性,制备了聚乙烯醇/葡萄糖酸蒙脱土纳米复合材料。在机械搅拌与超声波震荡协同作用下,把纳米葡萄糖酸蒙脱土均匀预分散在甘油中,然后加入到聚乙烯醇乳液中,得到了聚乙烯醇/葡萄糖酸蒙脱土纳米复合薄膜。实验结果表明,当甘油用量为聚乙烯醇的3%、聚乙烯醇乳液浓度为10%和葡萄糖酸蒙脱土加入量小于3%时,复合薄膜的拉伸强度最大提高45%、耐水性提高2.7倍和热分解温度提高34℃,而断裂伸长率和透光性分别下降不足13%和5%。本方法显著提高了聚乙烯醇的性能,有着良好的应用前景。For the purpose of improving the mechanical strength, water resisting property and thermostability of polyvinyl alcohol （PVA）, the physical composite modification was studied with nano gluconic acid montmorillonite （NGAM） and PVA/NGAM nanocomposite material was prepared. Firstly, NGAM were dispersed homogeneously in glycerin under the action of mechanical agitation and ultrasonic oscillations synergy, after a while, which added into PVA emulsion to prepare the nano-eomposite membrane of PVA/NGAM. Experimental results showed that when glycerin was 3 of the consumption for PVA, the concentration of PVA emulsion was 10%0, and the addition amount NGAM was less than 3 %, the maximum of tensile strength of the composite films can being improve reach 45 %, water resisting property was 2. 7 times stronger and its thermal decomposing temperature can being increase 34 ℃. However, elongation at break and transmittance decreased less than 13% and 5%, respectively. This method substantially improved the property of PVA. Consequently, it will be extensively applied

关 键 词：聚乙烯醇 纳米葡萄糖酸蒙脱土 改性 复合材料 

分 类 号：TB383.1[一般工业技术—材料科学与工程]