摘要
用电子束引发预辐照接枝的方法,在高密度聚乙烯(High density polyethylene,HDPE)薄膜上接枝甲基丙烯酸缩水甘油酯(Glycidyl methacrylate,GMA),制备了含有高活性环氧基团的聚合物膜。详细研究了单体浓度、反应温度和时间以及吸收剂量等因素对接枝率的影响规律。应用傅立叶变换红外光谱(FT–IR)、差示扫描量热仪(DSC)、原子力显微镜(AFM)研究了接枝物的组成、热性能和表面形貌。FT–IR测试表明接枝物为HDPE–g–GMA共聚物;接枝膜的熔融温度Tm以及修正后HDPE组分ΔHf(HDPE)均随着接枝率的增大而降低,原因归结于HDPE接枝后结晶度降低。HDPE–g–GMA膜的AFM图像显示其表面粗糙度增加,进一步证明膜表面发生了接枝反应。
Glycidyl methacrylate （GMA） was grafted onto HDPE membranes by pre-irradiation method with 1.8 MeV E-beams, and a kind of membranes having reactive epoxy groups was successfully synthesized. Effects of monomer concentration, reaction temperature and time and irradiation dose on the grafting yield were studied. Composition, thermo-property and surface morphology of the grafted membranes were studied by FTIR, DSC and Tapping-mode AFM, respectively. The FTIR measurements proved the synthesized copolymer is HDPE-g-GMA. The DSC results indicated the grafted HDPE＇s melting temperature （Tm） and the heat of fusion （△Hf （HDPE）） which was reduced with increasing grafting yield. The AFM images indicated that surface of the HDPE-g-GMA membranes was rougher than the virgin HDPE.
出处
《辐射研究与辐射工艺学报》
EI
CAS
CSCD
北大核心
2006年第4期219-223,共5页
Journal of Radiation Research and Radiation Processing
基金
国家自然科学基金(50303009)资助
关键词
高密度聚乙烯薄膜
预辐照接枝
甲基丙烯酸缩水甘油酯
High density polyethylene membranes, Pre-irradiation graft copolymerization, Glycidyl methacrylate
