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TEMPO调控下的苯乙烯光聚合

黄剑莹1, 邹友思2   

    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
  • 收稿日期:2007-12-03 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10
  • 通讯作者: 黄剑莹

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

HUANG Jian-Ying1*, ZOU You-Si2   

    1. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;
    2. Department of Materials Science and Engineering, Xiamen University, Xiammen 361005, China
  • Received:2007-12-03 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
  • Contact: HUANG Jian-Ying

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.

关键词: UV光聚合, 氮氧自由基可控聚合, 苯乙烯

Abstract: 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 3×104—1×105 and the higher light intensity is good for controlling the polymerization.

Key words: UV-irradiated polymerization, Nitroxide mediated radical polymerization(NMRP), Styrene

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