γ-射线辐照接枝制备几种功能性高分子材料

聚四氟乙烯

γ-射线辐照接枝制备几种功能性高分子材料
PREPARATION OF SEVERAL FUNCTIONAL POLYMER  MATERIALS via γ-RADIATION GRAFTING

作　　者：韩晓燕[1,2] 张政朴[1]

HAN Xiaoyan,ZHANG Zhengpu（1.Institute of Polymer Chemistry, Nankai University, Key Laboratory of Function Polymer Materials （Nankai University）  Ministry of Education,Tianjin 300071;2.Institute of Chinese Mediea, Tianjin Key Laboratory of Chemistry and Analysis of Chinese Materia Medica Tianjin University of Traditional Chinese Medicine, Tianjin 300193）

机构地区：[1]南开大学高分子化学研究所功能高分子材料教育部重点实验室南开大学,天津300071 [2]天津中医药大学中药学院天津市中药化学与分析重点实验室,天津300193

出　　处：《高分子学报》 CAS CSCD 2008年第7期 639-643页,共5页

Acta Polymerica Sinica

摘　　要：概述了近几年来本研究组在高分子材料辐照接枝制备功能性高分子材料方面的研究进展．分别以丙烯酸、顺丁烯二酸、苯乙烯接枝聚四氟乙烯纤维，制备了不同酸性的聚四氟乙烯功能纤维．以N-异丙基丙烯酰胺接枝壳聚糖制备温度及pH敏感材料，获得了性能特异的新型功能性高分子材料．报道了该类新型功能高分子材料的各种特异性能，如对金属离子优异的分离、吸附和解吸性能、超强酸性和一系列潜在用途．

Researches on the preparation of several polytetrafluroethylene （PTFE） functional fibers and N-isopropylacrylamide （NIPA） grafted chitosan via the radiation grafting have been described which were developed in the authors＇laboratory in recent years . It is found that the radiation grafted functional materials have special properties. （1） The acrylic acid grafted PTFE fiber showed stronger acidity than the carboxylic acid grafted one, of which the carboxylic content was 3.07 mmol/g determined by the titration experiments. It showed excellent adsorption, desorption and separation properties for Cu2^＋ , Pb2^＋ and La3^＋ . The highest adsorption capacity for Cu2^＋ , Pb2^＋ and La3^＋ was 107.48,246.41,150.20 mg/g respectively, when pH was 5. （2） Hammett superacid indicators were used to estimate the superacidity of PTFE-g-ST-SO3H fibers with different degree of grafting. The results showed that the acidity of FTFE-g-St-SO3H fiber was stronger than 100% H2SO4 when the grafting degree was 21.7%. The relative catalytic activity of FTFE-St-SO3 H fiber as a polymer superacid catalyst was higher than that of macroporous sulphonated resin in esterification, and it can be used repeatedly. （3） The NIPA grafted chitosan showed good thermo and pH activity, it had the potential use in drug releasing and other areas.

关 键 词：辐照接枝 聚四氟乙烯纤维 离子交换 壳聚糖 敏感材料
Irradiating grafting, Polytetrafluoroethylene fiber, Ion exchange, Chitosan, Sensitive material
分 类 号：TQ325.407 [工业技术 > 化学工业 > 合成树脂与塑料工业 > 聚合类树脂及塑料 > 聚氟乙烯] TB484 [工业技术 > 一般工业技术 > 工业通用技术与设备 > 包装工程]

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