摘要
采用氯化原位接枝制备的氯化聚氯乙烯接枝丙烯酸(CPVC-g-AA)与Al(OH)_3中和,制备羧酸型离聚体。将离聚体纯化后进行傅立叶变换红外光谱(FT-IR)和差示扫描量热仪(DSC)分析,并进行动态机械分析(DMA)测试,讨论了离聚体力学性能和溶胀性能。结果表明,FT-IR谱图显示出现了新的离子特征吸收峰;离聚体的玻璃化转变温度比CPVC-g-AA的有很大提高;Al离子含量和中和度对离聚体的力学性能具有较大影响;Al离子含量高时,离聚体表现出溶胀行为。
The synthesis of carboxylate ionomer was produced by adding the aluminum hydroxide into the CPVC-g-AA, which was synthesized by in-situ chlorinating graft copolymerization. The ionomers purified were characterized by fourier transform infrared （FT-IR） and differential scanning calorimetry （DSC）. Furthermore, the ionomers were tested by the dynamic mechanical analysis （DMA）, and the mechanical properties and swelling properties of ionomer were discussed. The results show that the ionomer is confirmed by the new absorption peak in FT-IR. The glass transition temperature value of ionomer is higher than that of CPVC-g-AA. The mechanical properties of ionomer are influenced by ion content and neutralization degree. The ionomer shows the swelling properties with the more ion content.
出处
《现代塑料加工应用》
CAS
北大核心
2008年第5期12-15,共4页
Modern Plastics Processing and Applications
基金
国家自然科学基金资助项目(50373042)。
关键词
氯化聚氯乙烯
接枝改性
离聚体
合成
力学性能
chlorinated polyvinyl chloride
graft modification
ionomer
synthesis
mechanical
