ARGETATRP合成大分子偶联剂PMMA-b-PTMSPMA及其对玻璃表面的接枝  

Synthesis of Macromolecular Coupling Agent PMMA-b-PTMSPMA by ARGET ATRP and Its Application in Modification of the Glass Surface

作　　者：孙婷婷[1] 任强[1] 李坚[1] 

机构地区：[1]江苏省太阳能电池材料与技术重点实验室,常州大学材料科学与工程学院,江苏常州213164

出　　处：《高分子材料科学与工程》2013年第6期5-9,共5页Polymer Materials Science & Engineering

摘　　要：以电子转移再生催化剂的原子转移自由基聚合(ARGET ATRP)成功合成了大分子硅烷偶联剂即聚甲基丙烯酸甲酯-b-3-甲基丙烯酰氧基丙基三甲氧基硅烷(PMMA-b-PTMSPMA)。利用所制得的大分子偶联剂对玻璃表面进行了接枝改性,对改性后的玻璃表面形态及疏水性能进行了研究。结果表明,以CuBr2/PMDETA络合物为催化体系,溴化铜(CuBr2)用量为n(CuBr2)/n(单体)=5×10-4时,PMMA段以辛酸亚锡(Sn(EH)2)为还原剂,PTMSPMA段以铜(Cu)为还原剂,用ARGET ATRP两步法成功制备了嵌段共聚物PMMA-b-PTMSPMA。采用"接枝到(graft onto)"方法,在温和的条件下,在玻璃表面接枝上了大分子偶联剂。玻璃表面的接触角可从30°提高到65°,提高了玻璃表面的疏水性。Macromolecular silane coupling agent, poly （methyl methacrylate-b-3-methacrylic acyloxy pi＇opyl trimethoxysilane） （PMMA-b-PTMSPMA） was successfully synthesized by electron transfer for atom transfer radical polymerization（ARGET ATRP）. The structure and properties of block copolymer were characterized by 1H-NMR, GPC and TGA. The morphology and hydrophobic property of grafted glass were investigated. The results show that the block copolymei＂ PMMA-b-PTMSPMA with designed molecular weight of 15000 was successfully synthesized by ARGET ATRP, using CuBr2/PMDETA complex as catalyst system （the catalyst content n （CuBr2） is 5×10^-4 of n （monomer））. In synthesizing PMMA segment, Sn（EH）2 was used as the reducing agent and in preparing PTMSPMA segment copper was used as the reducing agent. Under mild conditions, the macromolecular coupling agent was grafted onto the surface of glass by the ＂graft onto＂ technique. The contact angle of the glass increases from 30° to 70° after the block copolymer grafted onto the glass surface, resulting in the improvement of hydrophobicity of glass surface. The AFM images show that the surface of glass is covered with the different size of aggregates of the block copolymer.

关 键 词：电子转移再生催化剂的原子转移自由基聚合 大分子硅烷偶联剂 玻璃表面接枝 疏水性 

分 类 号：TQ316.322[化学工程—高聚物工业]