2种侧链液晶聚合物的合成及其在低密度聚乙烯成核中的应用  

Synthesis of Two Side Chain Liquid Crystal Polymers and Research on Their Application as Nucleating Agents for Low-density Polyethylene

作　　者：文家杰[1] 陈立[1] 

机构地区：[1]厦门大学化学化工学院,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2013年第2期215-220,共6页Journal of Xiamen University：Natural Science

基　　金：厦门市科技计划项目(3502Z20103006)

摘　　要：合成了2种聚丙烯酸酯类侧链液晶聚合物,用氢原子的核磁共振图谱(1 H-NMR)确定其结构,用飞行时间质谱仪(MALDI-TOF MS)表征其分子质量,并采用热失重(TGA)和差示扫描量热仪(DSC)研究它们的热稳定性和相转化温度;同时也研究了这2种聚合物在低密度聚乙烯(LDPE)成核过程中的效果.结果表明,所合成的2种侧链液晶聚合物可分别提高LDPE的结晶度10.9%和10.0%,且可以很好地改善LDPE的结晶行为和表面形貌,是LDPE有效的成核剂.Systematic investigations of the synthesis,characterization and applications of side chain liquid crystalline polymers have dramatically been increased.But their uses as the nucleating agents for low-density polyethylene （LDPE） had not been investigated.In this paper,two side chain liquid crystalline polymers were synthesized and their applications as the nucleating agents for LDPE were also investigated.The characterization results from DSC and TGA showed that,both the two polymers could increase the crystallinity of LDPE,and the highest could reach 109% which indicated that they were efficient nucleating agents for LDPE

关 键 词：聚丙烯酸酯 侧链液晶聚合物 低密度聚乙烯 成核剂 

分 类 号：O632.12[理学—高分子化学]