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	2-(N,N-二乙基二硫代氨基甲酰氧基)乙酸苄酯存在下苯乙烯光聚合; PHOTOPOLYMERIZATION OF STYRENE WITH BENZYL N,N-DIETHYLDITHIOCARBAMYLACETATE
	田士英 ; 董建华 ; 丘坤元
	1999
关键词	引发转移终止剂 活性& 自由基聚合 N-二乙基二硫代氨基甲酰氧基乙酸苄酯 苯乙烯 电子顺磁共振谱 & 2-N photoiniferter " benzyl N,N-diethyldithiocarbamylacetate styrene electron paramagnetic resonance quot quot living" radical polymerization
英文摘要	研究了2-N,N-二乙基二硫代氨基甲酰氧基乙酸苄酯(BzDCA)引发的苯乙烯光聚合反应,发现单体转化率和数均分子量(Mn)都随反应时间而增加,在反应时间相同时随着BzDCA浓度的增加单体转化率升高而Mn降低.聚苯乙烯(PS)的Mn同单体转化率成线性关系并同理论计算值符合得较好.以2-甲基-2-亚硝基丙烷(MNP)为捕捉剂用(EPR)技术对聚合反应机理进行了研究.认为BzDCA引发的St光聚合是一个"活性"聚合过程.; Photopolymerization of styrene (St) with benzyl N,N-diethyldithiocarbamylacetate(BzDCA) was studied. It was found that the number-average molecular weight (M-n) of polystyrene and the conversion increase with the increasing of reaction time, respectively. The conversion also increased with the concentration of BzDCA, while M-n decreased with the increasing of BzDCA concentration. When [St]/[BzDCA] = 874, the M-n of PS had a linear relationship with the conversion, and agreed well with that calculated from the initial St and BzDCA concentrations and the conversions. The mechanism of the polymerization was proposed and the polymerization proceeded via a "living" radical polymerization mechanism. Under UV irradiation, BzDCA dissociates into two kinds of radicals: carbon-Centered radical and sulfur-centered radical. The primary carbon-centered radical can initiate monomer polymerization and the sulfur-centered radical can reversibly terminate with propagating radical and form a diethyldithiocarbamate(DC) end group.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000083427000010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科学引文数据库(CSCD); 1; 5; 571-575
语种	中文
出处	万方 ; SCI ; http://d.g.wanfangdata.com.cn/Periodical_gfzxb199905010.aspx
出版者	高分子学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/78532]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	田士英,董建华,丘坤元. 2-(N,N-二乙基二硫代氨基甲酰氧基)乙酸苄酯存在下苯乙烯光聚合, PHOTOPOLYMERIZATION OF STYRENE WITH BENZYL N,N-DIETHYLDITHIOCARBAMYLACETATE. 1999-01-01.

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