Properties and structure of microcrystal muscovite composite superabsorbent

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• 作者：Tao Wan (1) (2)
  Lei Xiong (2)
  Runqiu Huang (1)
  Mengmeng Sun (2)
  Lili Qin (2)
  Xuemei Tan (2)
  Junyan Hu (2)
  
• 关键词：microcrystal muscovite ; superabsorbent ; composite ; polymerization
• 刊名：Journal of Wuhan University of Technology--Materials Science Edition
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：29
• 期：6
• 页码：1302-1306
• 全文大小：749 KB
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• 作者单位：Tao Wan (1) (2)
  Lei Xiong (2)
  Runqiu Huang (1)
  Mengmeng Sun (2)
  Lili Qin (2)
  Xuemei Tan (2)
  Junyan Hu (2)
  
  1. State Key Laboratory of Geohazard Prevention & Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, China
  2. Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu University of Technology, Chengdu, 610059, China
  
• ISSN：1993-0437

文摘

Microcrystal muscovite composite superabsorbents (MMCSA) were prepared by water solution polymerization using acrylic acid, acrylamide and itaconic acid as comonomers and microcrystal muscovite as an inorganic additive. Properties, such as water absorbency, salt absorbency, gel strength, water retention capacity and structure of MMCSA characterized by SEM and XRD, were investigated. Water absorbency, salt absorbency, gel strength, water retention capacity and thermostability were enhanced by incorporation of suitable amount of microcrystal muscovite. Water absorption of MMCSA was rapid, requiring 24.55 min to reach 63% of equilibrium absorbency (1218 g/g). Microcrystal muscovite was physically combined into the polymeric network without destroying its polycrystalline structure and microcrystal muscovite composite superabsorbent had some irregular, undulant, and small microporous holes with sheet-like microcrystal muscovite distributed in the polymeric matrix.