TEMPO调控下的苯乙烯光聚合  

Notroxide Mediated Radical Polymerization of Styrene Irradiated by TEMPO with UV Light

作　　者：黄剑莹[1] 邹友思[2] 

机构地区：[1]中国科学院福建物质结构研究所,福州350002 [2]厦门大学材料科学与工程系,厦门361005

出　　处：《高等学校化学学报》2008年第8期1689-1693,共5页Chemical Journal of Chinese Universities

摘　　要：在UV光照射下,以Irgacure 1103/TEMPO为引发剂,实现了苯乙烯的低温光引发可控聚合,得到了低分散性的聚苯乙烯.与热引发聚合相比较,光聚合的反应条件更温和,聚合速率更快.探讨了聚合体系中光引发剂及光强等因素的影响,实现了光聚合产物的扩链反应.Nitroxide mediated radical polymerization （NMRP） was employed to synthesize polystyrene in the presence of TEMPO irradiated with UV light at 50 ℃. The polymerization exhibited the characteristic of a controlled polymerization. In comparison with the thermal-initiated polymerization, the condition of UV-irradiated polymerization is milder and the rate is faster. The photopolymerization can be realized at 50 ℃ and the conversion can reach 99% within 10 h. The influence of concentration of photo-initiator and light intensity was discussed. The molecular weight can be controlled in the range of 3 × 10^4-1 × 10^5 and the higher light intensity is good for controlling the polymerization.

关 键 词：UV光聚合 氮氧自由基可控聚合 苯乙烯 

分 类 号：O631[理学—高分子化学]