Microwave assisted preparation of monodisperse polymeric microspheres and its morphologies and kinetics

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• 作者：Wei Yan (1) (2)
  Xiaoxi Hu (2)
  Gangshen Zhang (1) (2)
  Min Deng (1) (2)
  Changfeng Yi (1) (2)
  Zushun Xu (1) (2)
  
• 关键词：microwave irradiation ; emulsifier ; free ; emulsion ; polymerization ; monodisperse ; microsphere
• 刊名：Journal of Wuhan University of Technology--Materials Science Edition
• 出版年：2012
• 出版时间：December 2012
• 年：2012
• 卷：27
• 期：6
• 页码：1100-1104
• 全文大小：384KB
• 参考文献：1. Gedye R, Smith F, Westaway K, / et al. The Use of Microwave Ovens for Rapid Organic Synthesis[J]. T / etrahedron Letters, 1998, 27(3):279-82 CrossRef
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  3. Kaynak A, Hkansson E, Amiet A. The Influence of Polymerization Time and Dopant Concentration on the Absorption of Microwave Radiation in Conducting Polypyrrole Coated Textiles[J]. / Synthetic Metals, 2009, 159(13):1 373- 380 CrossRef
  4. Xiong S, Guo X, Li L, / et al. Preparation and Characterization of Fluorinated Acrylate Copolymer Latexes by Miniemulsion Polymerization under Microwave Irradiation[J]. / Journal of Fluorine Chemistry, 2010, 131(3):417-25 CrossRef
  5. Xu Z, Hu X, Li X, / et al. Monodispersed PEG-b-PSt Nanoparticles Prepared by Atom Transfer Radical Emulsion Polymerization under Microwave Irradiation[J]. / Journal of Polymer Science Part A: Polymer Chemistry, 2008, 46(2):481-88 CrossRef
  6. Huang J, Pen H, Xu Z, / et al. Magnetic Fe₃O₄/Poly(styrene-coacrylamide) Composite Nanoparticles Prepared by Microwave-assisted Emulsion Polymerization[J]. / Reactive and Functional Polymers, 2008, 68(1):332-39 CrossRef
  
• 作者单位：Wei Yan (1) (2)
  Xiaoxi Hu (2)
  Gangshen Zhang (1) (2)
  Min Deng (1) (2)
  Changfeng Yi (1) (2)
  Zushun Xu (1) (2)
  
  1. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, 430062, China
  2. Faculty of Materials Science and Engineering, Hubei University, Wuhan, 430062, China
  
• ISSN：1993-0437

文摘

The emulsifier-free emulsion polymerization of N-hydroxymethyl acrylamide (NMA), methyl methacrylate (MMA) and styrene (St) was successfully carried out under microwave irradiation, and monodisperse polymeric microspheres were prepared. The experimental results show that the emulsifier-free emulsion polymerization under microwave irradiation has more rapid reaction rate, higher conversion and shorter induction time than the copolymerization with conventional heating. The apparent activation energies are 61.04 and 83.75 kJ/mol, respectively; the microspheres have spherical morphology, and the microspheres prepared by emulsifier-free emulsion polymerization under microwave irradiation are smaller, more uniform than those obtained with conventional heating.