海藻酸钠改性膨润土/聚(丙烯酸钠-丙烯酰胺)高吸水性复合材料的合成及性能  

Synthesis and Performances of Bentonite/Poly(Sodium Acrylate-Acrylamide) Superabsorbent Composite Modified by Sodium Alginate

作　　者：张传娟[1] 林建明[1] 吴季怀[1] 唐群委[1] 

机构地区：[1]华侨大学材料科学与工程学院,福建泉州362021

出　　处：《华侨大学学报（自然科学版）》2007年第4期385-389,共5页Journal of Huaqiao University(Natural Science)

基　　金：福建省新材料与器件重大专项课题(2004HZ01-3);福建省重大科研项目(2002H002)

摘　　要：以丙烯酸和丙烯酰胺为单体,采用新型水溶液聚合法,制备海藻酸钠改性的膨润土/聚(丙烯酸钠-丙烯酰胺)高吸水性复合材料.采用正交实验,考察交联剂、引发剂、中和度、海藻酸钠、膨润土及单体质量比等因素对吸水倍率的影响.结果表明,当膨润土质量分数为30%时,该高吸水性复合材料仍可吸收自身重量1 200多倍的蒸馏水.傅里叶变换红外光谱(FTIR)与扫描电子显微镜(SEM)分析表明,单体与矿物结合良好.A superabsorbent composite is synthesized by polymerization and cross linking reaction, with acrylic acid and acrylamide as monomers, with N,N-methylene-bis-acrylamide as croSs-linking agent and potassium persulfate as an initiator. Bentonite and sodium alginate were added in reaction solution and reacted with monomer. Regarding water absorption of this material, a study is made on such influencing factors as amount of initiator and cross-linking agent, amount of bentonite and sodium alginate, and neutralization degree, and the mass ratio of acrylic acid to acrylamide. When the amount of bentonite is 30%, the water absorption of this material will surpass 1 200 g · g^-1.

关 键 词：海藻酸钠 高吸水性 复合材料 丙烯酸 丙烯酰胺 膨润土 

分 类 号：TB34[一般工业技术—材料科学与工程] TQ317[化学工程—高聚物工业]