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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (18): 1930-1934. 上一篇    

研究简报

无皂乳液聚合法制备Fe3O4@P(St-GMA)复合微球

刘宏波*，温绍国，王继虎，徐郑旭，陈慰祖，陈渊，郑鹏鹏   

  1. (上海工程技术大学化学化工学院 上海 201620)
  • 投稿日期:2009-12-10 修回日期:2010-04-14 发布日期:2010-05-19
  • 通讯作者: 刘宏波 E-mail:liuhongbo81@gmail.com
  • 基金资助:

    上海市优青

Preparation of Fe3O4@P(St-GMA) Magnetic Microspheres by Soap-free Emulsion Polymerization

LIU Hong-Bo, WEN Shao-Guo, WANG Ji-Hu, XU Zheng-Xu, CHEN Wei-Zu, CHEN Yuan, ZHENG Peng-Peng   

  1. (School of Chemistry & Chemical Engineering, Shanghai Univeristy of Engineering Science, Shanghai 201620)
  • Received:2009-12-10 Revised:2010-04-14 Published:2010-05-19

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用化学共沉淀法制备了磁性四氧化三铁纳米粒子. 在油酸和氨水的作用下, 使之分散在水中, 得到了水分散的磁流体. 在水基磁流体的存在下, 进行苯乙烯和甲基丙烯酸缩水甘油酯(GMA)的无皂乳液共聚合, 得到了Fe3O4@P(St-GMA)复合微球. 综合考察了反应温度、磁流体和单体的用量、引发剂的用量对聚合转化率的影响, 并用TEM, TGA和VSM对磁性复合微球进行了表征.

关键词: 化学共沉淀法, 无皂乳液共聚合, 转化率, 磁流体, 磁性微球

Magnetic iron oxide nanoparticles were prepared by chemical coprecipitation of ferrous and ferric salts in the alkaline medium, and water-dispersed magnetic fluids were achieved by dispersing the nanoparticles into the aqua ammonia solution of oleic acid, then magnetic Fe3O4@P(St-GMA) microspheres were achieved by soap-free emulsion polymerization of styrene and glycidyl methacrylate in the presence of magnetic fluids. The effecting factors to the fractional conversion of polymerization such as styrene content, ferrofluid content, initiator content and temperature, were examined in detail. To confirm the iron oxide nanoparticles were encapsulated by P(St-GMA), one sample selected was characterized by TEM, TGA and VSM.

Key words: chemical coprecipitation, soap-free emulsion co-polymerization, conversion, magnetic fluids, magnetic microspheres