基于ARGET-ATRP法的硅表面接枝两亲性嵌段聚合物刷的研究  

Study of Amphiphilic Block Copolymer Brushes Grafted from Silicon Surface based on ARGET-ATRP Polymerization

作　　者：闫春娜 刘倩 李继承 刘文磊 程康 王利平[1] YAN Chun na;LIU Qian;LI Ji- cheng;LIU Wen -lei;CHENG Kang;WANG Li -ping(School of Materials Science and Engineering,Liaocheng University,Liaocheng 252059,China)

机构地区：[1]聊城大学材料科学与工程学院,山东聊城252059

出　　处：《聊城大学学报（自然科学版）》2018年第2期97-101,共5页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金项目(51503094);山东省高等学校科技计划项目(J16LA01);聊城大学大学生科技文化创新基金项目(26312161932;26312171917;26312171930);聊城大学大学生创新训练计划(CXCY2017154)资助

摘　　要：采用电子转移活化再生催化剂原子转移自由基聚合(ARGET-ATRP),在硅片表面接枝了PMMA-b-PHPA-RhB两亲性嵌段共聚物刷.通过红外(FT-IR)、核磁共振(1 HNMR)、凝胶渗透色谱(GPC)、接触角(CA)和原子力显微镜(AFM)对产物进行了表征分析.结果表明,溶液中形成的聚甲基丙烯酸甲酯的数均分子量Mn为23 220,分子量分布为1.24,分子量分布较窄,符合活性自由基聚合的特征;聚合物链活性末端溴的存在证实了聚合过程是按照ARGET-ATRP机理进行,硅片表面已成功接枝了结构可控的PMMA-b-PHPA-RhB嵌段共聚物刷.Poly（methyl methacrylate）-block-Poly（hydroxyl propylacrylate Rhodamine）（PMMA-bPHPA-RhB）amphiphilic block copolymer brushes grafted from silicon surface were synthesized via electron transfer activated regeneration catalyst atom transfer radical polymerization（ARGET-ATRP）.The products were characterized by fourier transform infrared spectroscopy（FT-IR）,1 H nuclear magnetic resonance spectroscopy（1 HNMR）,gel permeation chromatography（GPC）,contact angle（CA）and atomic force microscope（AFM）,respectively.The results indicate that the molecular weight of PMMA in solution is 23220,and molecular weight distribution is narrow to 1.24,which is consistent with the characteristics of living free radical polymerization.The existence of bromine at the end of polymer chains confirms that the polymerization process follows ARGET-ATRP mechanism.The controlled PMMA-b-PHPA-RhB copolymer brushes have grafted from silicon surface successfully.

关 键 词：ARGET-ATRP 罗丹明B 两亲性 嵌段共聚物 

分 类 号：TQ311[化学工程—高聚物工业]