| 氧化硼对苯乙烯原子转移自由基聚合的加速作用; Rate-accelerating of Boric Oxide for Atom Transfer Radical Polymerization of Styrene | |
| 林睿 ; 庄家明 ; 许锐 ; 赵军 ; 林华端 ; 邹友思 | |
| 2008-11 | |
| 关键词 | 氧化硼 加速 苯乙烯 原子转移自由基聚合 Boric oxide Rate-accelerating Styrene Atom transfer radical polymerization（ATRP） |
| 英文摘要 | 联系人简介: 邹友思, 男, 教授, 博士生导师, 主要从事活性自由基聚合研究. E-mail yszou@xmu.edu.cn; [中文文摘]以2-溴丙酸乙酯为引发剂,溴化亚铜为催化剂,N,N,N′,N″,N″-五甲基二乙基三胺为配体,以氧化硼为加速剂,进行了苯乙烯原子转移自由基聚合的加速研究.发现氧化硼与引发剂比例为4时,加速效果最为明显,且对分子量的控制效果较好.在85℃时,添加该比例的氧化硼,苯乙烯在6 h的聚合转化率达到78.5%.在65,75及85℃条件下,加入氧化硼时体系的聚合反应动力学为一级反应,苯乙烯聚合速率分别为空白体系的1.82,1.54和1.5倍;聚合物的分子量可控,分子量分布窄,体系呈现明显的活性聚合特征.通过核磁共振谱对聚合物的结构进行了表征,证明氧化硼在整个聚合过程中只起加速作用,并不影响聚合机理和聚苯乙烯的结构.氧化硼价廉,有利于实现原子转移聚合的工业化.[英文文摘]The polymerization of styrene was mediated by copper(Ⅰ) bromide/pentramethyltriamine(PMDETA) using ethyl 2-bromopropionate(EBP) as an initiator and boric oxide(BO) as a rate-accelerating additive.BO was found to be effective to accelerate ATRP of styrene,and the conversions were improved to 78.5% during 6 h at 85 ℃.An optimal molar ratio of BO/EBP for the polymerization of styrene was 4∶1.First-order kinetics,increase of Mn with respect to conversion,and the relatively narrow polydispersity demonstrate that the polymerization of styrene in the presence of BO proceeds in a living fashion. The apparent rate constant of polymerization was improved by a factor of 1.82, 1.54 and 1.5 at 65,75 and 85℃ respectively NMR spectra study indicates that no influence occurred on the structure of polysty rene when BO w as added as promo ter. BO is likely to solve the slow polymerization rate of ATRP and promote its industrial application. |
| 语种 | 中文 |
| 出版者 | 《高等学校化学学报》编辑部 |
| 内容类型 | 期刊论文 |
| 源URL | [http://dspace.xmu.edu.cn/handle/2288/2282]  |
| 专题 | 化学化工－已发表论文 |
| 推荐引用方式 GB/T 7714 | 林睿,庄家明,许锐,等. 氧化硼对苯乙烯原子转移自由基聚合的加速作用, Rate-accelerating of Boric Oxide for Atom Transfer Radical Polymerization of Styrene[J],2008. |
| APA | 林睿,庄家明,许锐,赵军,林华端,&邹友思.(2008).氧化硼对苯乙烯原子转移自由基聚合的加速作用.. |
| MLA | 林睿,et al."氧化硼对苯乙烯原子转移自由基聚合的加速作用".(2008). |
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