Determining the degree of grafting for poly(vinylidene fluoride) graft-copolymers using fluorine elemental analysis  

作　　者：YU Yang ZHANG Bowu YANG Xuanxuan DENG Bo LI Linfan YU Ming LI Jingye 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]Graduate University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Nuclear Science and Techniques》2011年第1期25-29,共5页核技术（英文）

基　　金：Supported by National Natural Science Foundation of China (10875164,10805070);the Knowledge Innovation Project of Chinese Academy of Sciences,Shanghai Municipal Commission for Science and Technology (10ZR1436700),and SRF for ROCS of the Ministry of Education

摘　　要：Acrylic acid (AAc) and styrene (St) were grafted onto poly(vinylidene fluoride) (PVDF) powder or membrane samples by pre-irradiation graft copolymerization.The grafted chains were proved by FT-IR spectroscopy analysis.The degree of grafting (DG) of the grafted PVDF was determined by fluorine elemental analysis (FEA) method,and was compared with the DGs determined by weighing method,acid-base back titration method and quantitative FT-IR method.The results show that the FEA method is accurate,convenient and universal,especially for the grafted polymer powders.Acrylic acid （AAc） and styrene （St） were grafted onto poly（vinylidene fluoride） （PVDF） powder or membrane samples by pre-irradiation graft copolymerization.The grafted chains were proved by FT-IR spectroscopy analysis.The degree of grafting （DG） of the grafted PVDF was determined by fluorine elemental analysis （FEA） method,and was compared with the DGs determined by weighing method,acid-base back titration method and quantitative FT-IR method.The results show that the FEA method is accurate,convenient and universal,especially for the grafted polymer powders.

关 键 词：聚偏氟乙烯 接枝共聚物 元素分析 有限元分析方法 嫁接 预辐照接枝 酸碱滴定法 接枝聚合物 

分 类 号：TQ028.8[化学工程] TS727.2[轻工技术与工程—制浆造纸工程]