石油化工高等学校学报 ›› 2019, Vol. 32 ›› Issue (1): 1-5.DOI: 10.3969/j.issn.1006-396X.2019.01.001

• 石油化工 • 上一篇    下一篇

RAFT无皂乳液聚合制备衣康酸改性聚苯乙烯乳液

曹景强张 欢王阳孙鹏飞高传慧武玉民   

  1. 青岛科技大学 化工学院,山东 青岛 266042
  • 收稿日期:2017-12-10 修回日期:2018-04-07 出版日期:2019-02-25 发布日期:2019-02-28
  • 通讯作者: 武玉民(1964⁃),男,博士,教授,从事新型高分子材料及绿色化工研究;E⁃mail:wuyumin005@163.com。
  • 作者简介:曹景强(1990?),男,硕士研究生,从事新型高分子材料及绿色化工研究;E?mail:caojingqiang999@163.com。
  • 基金资助:
    国家自然科学基金项目(51872150); 山东省科技创新项目(2017cxgc1104)。

Preparation of Itaconic Acid Modified Polystyrene Emulsion by RAFT Soap⁃Free Emulsion Polymerization

Cao Jingqiang,Zhang Huan,Wang Yang,Sun Pengfei,Gao Chuanhui,Wu Yumin   

  1. School of Chemical and Engineering,Qingdao University of Science & Technology,Qingdao Shandong 266042,China
  • Received:2017-12-10 Revised:2018-04-07 Published:2019-02-25 Online:2019-02-28

摘要: 采用一种RAFT活性聚合的新方法制备衣康酸改性聚苯乙烯纳米粒子。首先合成用于活性聚合的小分子可逆加成⁃断裂链转移剂三硫代碳酸酯(DBTTC)。然后采用无皂乳液聚合的方法,以生物质原料衣康酸为共聚单体,过硫酸铵为引发剂,在丙酮/水溶液中进行苯乙烯共聚反应,合成了粒径分布窄的聚苯乙烯乳液。分别研究了苯乙烯(St)/衣康酸(IA)单体配比、丙酮/水配比、反应温度以及DBTTC用量等对乳液粒径的影响。用激光粒度分布仪、透射电子显微镜(TEM)、凝胶渗透色谱(GPC)、表面张力仪和电导率仪对乳液进行表征。结果表明,当温度为78 ℃,n(St)/n(IA)为10,n(DBTTC)/n(St)为0.064,n(丙酮)/n(水)为4∶6,可获得平均粒径为98 nm的聚苯乙烯纳米乳胶粒。

关键词: 无皂乳液聚合, 衣康酸, 活性聚合, 聚苯乙烯, 可逆加成?断裂链转移

Abstract: A new method for preparation of polystyrene nanoparticles by using a method of RAFT living polymerization was studied.Firstly,small molecular reversible addition⁃fragmentation chain transfer agent,three thiocarbonate (DBTTC),was synthesized for active polymerization.Then the emulsifier free emulsion polymerization method was used to prepare styrene polystyrene latex with narrow particle size distribution using itaconic acid as the monomer and ammonium persulfate as initiator.Effects of the molar ratio of St/IA,molar ratio of acetone/water,reaction temperature and amount of DBTTC on the latex particle size were studied respectively.The latices were characterized by Malvern nanosizer,TEM,GPC,surface tension and conductometric titration.The results show that when the temperature is 78 ℃,the molar ratio of St/IA is 10,and the molar ratio of DBTTC/St is 0.064,the molar ratio of acetone/water is 4∶6,the polystyrene nanometer latex particles with average particle size of 98 nm can be obtained.

Key words: Soap?free emulsion polymerization, Itaconic acid, Living polymerization, Polystyrene, RAFT

引用本文

曹景强, 张 欢, 王阳, 孙鹏飞, 高传慧, 武玉民. RAFT无皂乳液聚合制备衣康酸改性聚苯乙烯乳液[J]. 石油化工高等学校学报, 2019, 32(1): 1-5.

Cao Jingqiang,Zhang Huan,Wang Yang,Sun Pengfei,Gao Chuanhui,Wu Yumin. Preparation of Itaconic Acid Modified Polystyrene Emulsion by RAFT Soap⁃Free Emulsion Polymerization[J]. Journal of Petrochemical Universities, 2019, 32(1): 1-5.

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