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
出处
《化工新型材料》
CAS
CSCD
北大核心
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)
关键词
聚乙烯醇
纳米葡萄糖酸蒙脱土
改性
复合材料
polyvinyl alcohol, nano gluconic acid montmorillonite, modification composite
作者简介
姜宏鹏（1986-），男，硕士研究生，研究方向：化工材料。
联系人：韦藤幼（1959－），男，广西大学教授。
