四(4-磺酸苯基)-卟啉在聚4-乙烯基吡啶接枝的乙烯-乙烯醇膜表面的吸附和自组装行为  

Adsorption Behavior and Self-Aggregation of 5,10,15,20-Tetrakis-(4-Sulfonatophenyl)-Porphyrin on Poly(4-Vinylpyridine)-Grafted Ethylene-Vinyl Alcohol Membrane

作　　者：赵帅[1] 赵莉芝[1] 刘满满[1] 张玉忠[1] 

机构地区：[1]天津工业大学材料科学与工程学院省部共建分离膜与膜过程国家重点实验室,天津300387

出　　处：《高分子材料科学与工程》2017年第3期155-160,167,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51173132;51373120;51503146;21204064);天津市应用基础与前沿技术研究计划(14JCQNJC03900;15JCZDJC37600);国家级大学生创新创业训练计划项目

摘　　要：四(4-磺酸苯基)-卟啉(TPPS)是一种水溶性卟啉,在一定条件下可以自组装形成超分子聚集体,将这种超分子聚集体与膜材料相结合,可以形成超分子负载膜。文中以乙烯-乙烯醇共聚物(EVAL)为膜材料,4-乙烯基吡啶(4VP)为单体,采用紫外辐照表面接枝法制备了表面带有P4VP接枝链的EVAL-P4VP接枝膜,利用非共价键作用将TPPS负载于EVAL原膜及EVAL-P4VP接枝膜上,研究了p H值、离子强度、接枝率等因素对TPPS吸附过程以及TPPS在膜表面存在形态和自组装行为的影响。结果表明,TPPS溶液中自身聚集及离子强度的增加对其在膜上的吸附产生不利影响;吸附过程可用Langmuir等温吸附模型进行描述;接枝率的增加、p H值的减小和吸附量的增加有利于TPPS在接枝膜表面形成J-聚集体。Water-soluble tetrakis-（ 4-sulfonatophenyl ）-porphyrin （TPPS） can self assemble into supramolecular aggregates under certain condition. Supramolecular structure-loaded membrane can be obtained by combination of supramolecular aggregates and membranes. In this paper, poly （4-vinylpyridine）-grafted ethylene-vinyl alcohol （EVAL-P4VP） membrane was prepared by UV grafting polymerization of 4VP onto EVAL membrane. The adsorption behavior and self-aggregation of TPPS on membrane were discussed. The effect of pH, ionic strength and grafting degree on the adsorption behavior and self-aggregation of TPPS was studied. The results show that self- aggregation of TPPS and increased ionic strength lead to a decreased adsorption capacity of TPPS on membranes. The adsorption process of TPPS on membrane can be described by Langumir isotherm model. Decreasing pH, increasing adsorption capacity and grafting degree were in favor of J-aggregation of TPPS on the membrane surface.

关 键 词：膜 卟啉 吸附 聚集 

分 类 号：TB383[一般工业技术—材料科学与工程]