Properties and Structure of Microcrystal Muscovite Composite Superabsorbent
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2014年第6期
论文作者：万涛 XIONG Lei HUANG Runqiu SUN Mengmeng QIN Lili TAN Xuemei HU Junyan
文章页码：1302 - 1306
摘 要：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.
万涛1,2，XIONG Lei2，HUANG Runqiu1，SUN Mengmeng2，QIN Lili2，TAN Xuemei2，HU Junyan2
1. State Key Laboratory of Geohazard Prevention & Geoenvironment Protection, Chengdu University of Technology2. Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions,Chengdu University of Technology
摘 要：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.
关键词：
