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 konjac glucmannan with acrylic acid-acrylamide copolymers/attapulgite superabsorbent resin

作　　者：胡盛[1,2] 王雨佩[2] 周红艳[2] 田大听[2] 张升晖[1,2] 

机构地区：[1]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 [2]湖北民族学院化学与环境工程学院,湖北恩施445000

出　　处：《化学试剂》2013年第3期257-260,276,共5页Chemical Reagents

基　　金：湖北省自然科学基金资助项目(2011CDC040;2010CDB00903);湖北省高等学校优秀中青年科技创新团队计划资助项目(T201006);国家自然科学基金资助项目(51263009);恩施州科学技术资助项目(恩州科业[2011]13号)

摘　　要：以凹凸棒石(AT)为无机填料,丙烯酰胺(AM)、丙烯酸(AA)两种单体同时对魔芋(KGM)进行接枝改性,采用水溶液聚合法制备了标题化合物。考察了各合成因素对树脂吸液倍率的影响,并采用FT-IR,SEM对树脂进行了表征。结果表明,当魔芋用量为15%(占单体丙烯酸质量百分比,下同)、凹凸棒石用量为30%、交联剂用量为0.08%、引发剂用量为0.4%和丙烯酰胺与丙烯酸的质量比为5∶1时,制备的树脂的吸蒸馏水倍率最高,达到978.47 g/g。红外光谱(FTIR)测试分析表明魔芋葡甘聚糖、丙烯酸、丙烯酰胺和凹凸棒石共同参与了接枝聚合反应。扫描电子显微镜(SEM)测试分析表明凹凸棒石的引入,树脂的表面变得粗糙并存在大小不一的孔隙。A novel superabsorbent resin of konjac glucmannan with acrylic acid-acrylamide/attapulgite using konjac gluc- mannan （ KGM ） , acrylic acid （ AA ） , acrylamide （ AM ） and at- tapulgite（AT） was synthesized by aqueous solution polymeri- zation. The effects of the amount of konjac glucmannan, at- tapulgite, crosslinker, initiator and the ratio of acrylamide： acrylic acid on water absorbency were investigated. The struc-ture and morphology of superabsorbent resin were character- ized by Fourier transform infrared spectra （FT1R） and scan- ning electron microscope （SEM）. The results indicated that when the content of konjac glucmannan, attapulgite, crosslink- er, initiator is 15%,30%,0.08%,0.4% （compare to the mass of monomer）, respectively, and the mass ratio of acryl- amide：acrylic acid is 5：1, the absorbancy of the resin was highest and the water absorbent rate of the sample was 978.47 g.g-1. The FT-IR spectra showed that KGM and AT participate in graft polymerization reaction with AA and AM. SEM indicated konjac glucmannan with acrylic aeid-acrylamide copolymers/attapulgite superabsorbent resin own porous surface and different sizes of holes.

关 键 词：魔芋 凹凸棒石 丙烯酸 丙烯酰胺 高吸水性树脂 

分 类 号：TB324[一般工业技术—材料科学与工程]