摘要
以马来酸酐(MAH)/苯乙烯(St)双单体固相接枝聚丙烯(PP)制备了PP-g-MAH/St接枝物,采用正交试验确定最佳工艺条件,并通过傅里叶变换红外光谱仪、核磁共振谱仪、差式扫描量热仪和X射线衍射仪对接枝物的结构和性能进行了表征和分析。结果表明,最佳接枝工艺条件为:反应温度120℃,反应时间1h,nSt/nMAH=1.2∶1(摩尔比),mMAH/mPP=0.14,mBPO/mPP=0.02(质量比);接枝前后PP的晶型保持不变,均为α晶,但是PP结晶度降低,结晶温度则有所提高;作为相容剂,PP-g-MAH/St可显著提高PP复合材料的冲击强度。
PP-g-malic anhydride (MAH)/styrene (St) was prepared by a twin-monomer solid phase grafting method. The optimum condition was determined by orthogonal experiments with a reaction temperature of 120 ℃, a reaction time of 1 h, a St/MAH molar ratio of 1.2∶1, a MAH/PP mass ratio of 0.14/1, and a BPO/PP mass ratio of 0.02/1. The characterization results of FTIR and NMR spectroscopy indicated that MAH and styrene were successfully grafted into PP by free radical copolymerization. DSC and XRD investigations indicated that PP presented α-form crystals without any changes before and after grafting. However, the crystallinity degree of PP decreased, and its crystallization temperature increased. As a compatibilizer, the incorporation of PP-g-MAH/St enhanced the impact strength of PP compounds.
作者
肖潇
郑玉婴
卢鑫
赵波
张欣涛
XIAO Xiao;ZHENG Yuying;LU Xin;ZHAO Bo;ZHANG Xintao(College of Materials Science and Engineering,Fuzhou University, Fuzhou 350108, China;Fujian Inspection and Research Institute for Product Quality, Fuzhou 350002,China;Fujian Chenqi New Material Technology Co, Ltd, Quanzhou 362200,China;Fujian Key Laboratory of Rubber and Plastic New Materials, Quanzhou 362211,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2019年第6期31-37,共7页
China Plastics
关键词
固相接枝
双单体
聚丙烯
苯乙烯
马来酸酐
solid phase grafting
twin-monomer
polypropylene
styrene
maleic anhydride
