不同矿点凹凸棒黏土对复合高吸水性树脂吸水性能的影响  

Effect of Attapulgite from Different Zone on Water Absorbency of Superabsorbent Composites

作　　者：陈红[1,2] 王文波[1] 王爱勤[1] 

机构地区：[1]中国科学院兰州化学物理研究所,甘肃兰州730000 [2]中国科学院研究生院,北京100049

出　　处：《非金属矿》2011年第1期1-3,25,共4页Non-Metallic Mines

基　　金：国家863项目(No.2006AA03Z0454和2006AA100215);中国科学院"西部行动"计划项目(No.KGCX2-YW-501)资助

摘　　要：以不同矿点凹凸棒黏土为无机组分,采用溶液聚合法制备了羧甲基纤维素钠接枝聚丙烯酸/凹凸棒黏土(CMC-g-PAA/APT)复合高吸水性树脂。用红外光谱和扫描电镜表征了凹凸棒黏土和复合高吸水性树脂的结构和形貌,研究了凹凸棒黏土组成对复合高吸水性树脂吸水性能的影响。结果表明,含有较低铝离子凹凸棒黏土制备的复合高吸水性树脂具有较高的吸水倍率,含有较高铝离子和钙离子凹凸棒黏土制备的复合高吸水性树脂具有较好的反复溶胀性能。A series of carboxymethyl cellulose-g-poly（acrylic acid）/attapulgite superabsorbent composites were prepared by free-radical solution polymerization,using attapulgite from different zone as the inorganic additives.The structure and morphologies of attapulgite and their composites were characterized by FTIR spectra and SEM techniques.The composition of attapulgite and their effects on the water absorbency of the composites were investigated.The results indicated that the superabsorbent composite based on attapulgite with the lower content of Al3＋ had best water absorbency,and attapulgite with the higher content of Al3＋ and Ca2＋ had best re-swelling abilities.

关 键 词：高吸水性树脂 凹凸棒黏土 吸水倍率 吸水速率 成分 

分 类 号：O636[理学—高分子化学] O69[理学—化学]