紫外光引发直接接枝丙烯酸制备聚偏氟乙烯pH敏感膜  

Prepared and Characterization of pH-Sensitive PVDF Ultrafiltration Membranes Based on Ultraviolet Radiation Grafting Polymerization of Acrylic Acid

作　　者：王林[1] 华河林[1] 李娜[1] 熊鹰 

机构地区：[1]南昌航空大学环境与化学工程学院,江西南昌330063 [2]中山朗清膜业有限公司,广东中山528436

出　　处：《高分子材料科学与工程》2016年第11期140-144,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(20906044);深圳市战略新兴产业发展专项资金(JCYJ20140417144423188);南昌航空大学研究生创新专项资金(YC2015011)

摘　　要：聚偏氟乙烯铸膜液中添加多乙烯多胺,制备含碳碳双键的聚偏氟乙烯超滤膜;在不除氧和无光引发剂条件下,采用紫外光直接辐射将单体丙烯酸接枝到聚偏氟乙烯膜表面,制备了聚偏氟乙烯pH敏感膜。考察单体丙烯酸浓度、反应时间与接枝率的关系,当丙烯酸质量分数为40%,反应时间20 min时,膜接枝率为26.6%。当接枝率为18.7%时,膜的pH敏感性最为显著。Poly（vinylidene fluoride） （PVDF） ultrafiltration membranes were prepared by non-solvent induced phase separation, which formed carbon-carbon double bonds through elimination reaction by adding polyethylene polyamine to casting solution. In order to obtain the pH-sensitive membranes, acrylic acid was grafted onto the surface of PVDF membrane without initiator and deoxidization by ultraviolet （UV/） irradiation grafting polymerization The grafted-ratio of the membrane is 26.6% when the acrylic acid concentration is 40% and the reaction time is 20 min. The modified membrane with the grafted-ratio of 18.7% has the most obvious pH- sensitivity.

关 键 词：pH敏感膜 紫外光接枝 聚偏氟乙烯 丙烯酸 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]