摘要
利用原位插层聚合法在玻璃模具中合成了聚甲基丙烯酸甲酯/有机蒙脱土(PMMA/OMMT)纳米复合材料,实现了层状OMMT在PMMA基体中剥离成纳米片状OMMT。用DSC和DMA对一维纳米OMMT片层环境下PMMA链的松弛性进行了表征。DMA测试结果显示,复合材料的玻璃化转变温度比纯PMMA高,且对应峰的强度随着OMMT用量的增加而降低,表明纳米片状OMMT对其周围的PMMA链的运动具有限制作用。
Poly（methyl methacrylate）（PMMA）/montmorillonite（OMMT） nanocomposites were prepared by in situ intercalative polymerization in glass mould, and the layered OMMT was implemented in the PMMA matrix to be stripped into a nano scale OMMT. The relaxation of PMMA chains in a one-dimensional nano OMMT film was characterized by DSC and DMA. DMA test results show that the glass transition temperature of the composite is higher than that of pure PMMA, and the corresponding peak intensity decreases with the increase of OMMT content, which indicates that the nano scale OMMT has a limited effect on the movement of the PMMA chain.
出处
《塑料科技》
CAS
北大核心
2015年第11期55-59,共5页
Plastics Science and Technology
基金
国家自然科学基金(21204090)
