海藻酸钠-魔芋接枝丙烯酰胺-丙烯酸/凹凸棒石高吸水性树脂的制备与性能  

Synthesis and Property of Sodium Alginate-Konjac Glucmannan with Acrylamide-Acrylic Acid Copolymers/Attapulgite Superabsorbent Resin

作　　者：段雯怡[1,2] 胡盛[2,3] 周红艳[2] 田大听[2] 张升晖[2,3] 

机构地区：[1]湖北民族学院科技学院,湖北恩施445000 [2]湖北民族学院化学与环境工程学院,湖北恩施445000 [3]湖北民族学院生物资源保护与利用湖北省重点实验室,湖北恩施445000

出　　处：《非金属矿》2013年第5期17-19,共3页Non-Metallic Mines

基　　金：国家自然科学基金(51263009);国家民委科研项目(12HBZ005);恩施州科学技术项目(恩州科业[2011]13号);湖北民族学院科技学院大学生创新项目(K201217)

摘　　要：以凹凸棒石(AT)为矿物填料,丙烯酰胺(AM)、丙烯酸(AA)2种单体同时对魔芋(KGM)和海藻酸钠(SA)进行接枝改性,采用水溶液聚合法制备了海藻酸钠-魔芋接枝丙烯酰胺-丙烯酸/凹凸棒石高吸水性树脂。采用正交试验考察了各因素对树脂吸液倍率的影响,并通过红外光谱(FT-IR)、扫描电子显微镜(SEM)等对树脂进行表征。结果表明,当海藻酸钠用量为25%(占单体丙烯酸质量百分比)、凹凸棒石用量为10%、交联剂用量为0.1%、引发剂用量为0.2%、丙烯酸中和度为85%时,制备的树脂吸蒸馏水倍率最高,达到1443.10 g/g。FT-IR分析表明海藻酸钠、魔芋葡甘聚糖、丙烯酸、丙烯酰胺和凹凸棒石共同参与了接枝聚合反应。SEM分析表明树脂表面粗糙并存在大小不一的孔隙。A novel superabsorbent resin of sodium alginate-konjac glucmannan with acrylic acid-acrylamide/attapulgite using sodium alginate（SA）, konjac glucmannan（KGM）, acrylic acid（AA）, acrylamide（AM） and attapulgite（AT） was synthesized by aqueous solution polymerization. The effects of the amount of sodium alginate, attapulgite, crosslinker, initiator and the neutralization degree of AA on water absorbency were investigated. The structure and morphology of superabsorbent resin were characterized by fourier transform infrared spectra （FT-IR） and scanning electron microscope （SEM）. The results showed that when the content of sodium alginate, attapulgite, crosslinker, initiator were 25%, 10%, 0.1%, 0.2% （compare to the mass of monomer）, respectively, and the neutralization degree of AA was 85%, the absorbancy of the resin was the highest and the water absorbent rate of the sample was 1443.10 g/g. The FT-IR showed that SA, KGM and AT participated in graft polymerization reaction with AA and AM. The SEM showed sodium alginate-konjac glucmannan with acrylic acid-acrylamide copolymers/attapulgite superabsorbent resin owned porous surface and different sizes of holes.

关 键 词：海藻酸钠 魔芋 凹凸棒石 丙烯酸 丙烯酰胺 高吸水性树脂 

分 类 号：TB34[一般工业技术—材料科学与工程] TD985[矿业工程—选矿]