| 用于原子转移自由基聚合的新型固载催化体系 |
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| 引用本文： | 鲁钢,陆春华,许仲梓.用于原子转移自由基聚合的新型固载催化体系[J].石油化工,2010,39(6):636. |
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| 作者姓名： | 鲁钢 陆春华 许仲梓 |
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| 作者单位： | 南京工业大学,材料学院,江苏,南京,210009 |
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| 摘 要： | 用油酸和二乙烯三胺合成了新型配体油酸咪唑啉(OLC),并通过化学方法将OLC固载在硅胶表面得到SiO2-OLC,SiO2-OLC再与CuBr或CuCl2形成硅胶固载催化剂(CuBr/SiO2-OLC或CuCl2/SiO2-OLC),并将该催化剂用于以2-溴代丙酸乙酯为引发剂、甲基丙烯酸甲酯为单体的原子转移自由基聚合(ATRP)反应。用元素分析和FTIR手段对催化剂的结构进行了表征,用GPC手段对聚甲基丙烯酸甲酯的相对分子质量及其分布进行了表征。实验结果表明,使用CuBr/SiO2-OLC和CuCl2/SiO2-OLC催化剂时,ATRP反应均符合一级反应动力学规律,为活性/可控聚合反应;聚合物的相对分子质量分布较窄(前者为1.25,后者为1.33);用CuCl2/SiO2-OLC催化剂合成的聚合物溶液清澈透明,催化剂可以回收再利用,但活性有所降低。
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| 关 键 词： | 油酸 二乙烯三胺 油酸咪唑啉 固载化催化剂 甲基丙烯酸甲酯 原子转移自由基聚合 聚甲基丙烯酸甲酯 |
New Immobilized Catalyst System for Atom Transfer Radical Polymerization |
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| Lu Gang,Lu Chunhua,Xu Zhongzi.New Immobilized Catalyst System for Atom Transfer Radical Polymerization[J].Petrochemical Technology,2010,39(6):636. |
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| Authors: | Lu Gang Lu Chunhua Xu Zhongzi |
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| Affiliation: | Lu Gang,Lu Chunhua,Xu Zhongzi (College of Materials Science and Engineering,Nanjing University of Technology,Nanjing Jiangsu 210009,China) |
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| Abstract: | 2-(8-heptadecenyl)-4,5-dihydro-1H-imidazole-1-ethylamine(OLC) was synthesized from cis-9-octadecenoic acid and divinyl-triamine. CuBr/SiO2-OLC and CuCl2/SiO2-OLC catalysts were prepared separately through chemically immobilizing OLC on silica gel surface to obtain SiO2-OLC and then interacting SiO2-OLC with CuBr or CuCl2. The catalysts were used in atom transfer radical polymerization(ATRP) of methyl methacrylate with ethyl 2-bromopropionate as initiator. The catalysts were characterized by means of element... |
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| Keywords: | cis-9-octadecenoic acid divinyl-triamine 2-(8-heptadecenyl)-4 5-dihydro-1H-imidazole-1-ethylamine immobilized catalyst methyl methacrylate atom transfer radical polymerization poly(methyl methacrylate) |
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