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  4. Properties and Structure of Microcrystal Muscovite Composite Superabsorbent

武汉理工大学学报-材料科学版(英文版), 2014, (6): 1302-1306. doi: 10.1007/s11595-014-1085-2

WAN Tao 1, , XIONG Lei 2, , HUANG Runqiu 3, , SUN Mengmeng 4, , QIN Lili 5, , TAN Xuemei 6, , HU Junyan 7,

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

3.State Key Laboratory of Geohazard Prevention & Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059,China

4.Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions,Chengdu University of Technology, Chengdu 610059,China

5.Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions,Chengdu University of Technology, Chengdu 610059,China

6.Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions,Chengdu University of Technology, Chengdu 610059,China

7.Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions,Chengdu University of Technology, Chengdu 610059,China

基金项目:   the Sichuan Provincial Science & Technology Pillar Program,China(2010GZ0128)   the Opening Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, China(SKLGP2012K004)  

Properties and Structure of Microcrystal Muscovite Composite Superabsorbent

Keywords： microcrystal muscovite

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.

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