摘要
采用溶液聚合法,以过硫酸钾(KPS)为引发剂,N,N′-亚甲基双丙烯酰胺(MBA)为交联剂,玉米芯(CC)、钠基蒙脱土(Na-MMT)、丙烯酸(AA)和丙烯酰胺(AM)为原料,通过接枝共聚制备了玉米芯-g-聚(丙烯酸-co-丙烯酰胺)/钠基蒙脱土(CC-g-Poly(AA-co-AM)/Na-MMT)复合高吸水性树脂。采用傅里叶红外光谱(FT-IR)、扫描电镜(SEM)、X-射线衍射(XRD)和热失重(TGA)对复合高吸水性树脂进行了表征;通过单因素法确定实验体系下的最佳工艺:单体总质量与玉米芯质量比为6∶1,交联剂、引发剂和钠基蒙脱土用量分别为单体总质量的0.1%、1.5%和7%,AA中和度为85%,吸蒸馏水达298.36g/g,0.9%生理盐水达到48.1g/g。
A series of corncob-g-poly（acrylic acid-co-acrylamide）/Na-montmorillonite superabsorbent composites were prepared by free-radical graft copolymerization using corncob （CC）, Na-montmorillonite （（Na-MMT）, acrylic acid （AA） and acrylamide（AM） as the basic raw material, potassium persuifate（KPS） as the initiator and N, N＇-methylenebisac- rylamide（MBA） as the crosslinker. The composites were characterized by FTIR, SEM, XRD and TGA. The single factor experiment results showed that the optimum conditions were as follows：mass ratio of monomers to corncob was 6,crosslink- er,initiator and Na-montmorillonite were 0. 1%, 1.5% and 7% mass ratio of monomers respectively, neutralization degree of AA was 85 %. The water absorbeneies of the composites under this condition were up to 298. 56gig for distilled water and 48. 1g/g for 0.9% NaCl solution.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第10期124-127,共4页
New Chemical Materials
关键词
玉米芯
钠基蒙脱土
复合高吸水性树脂
吸水性能
corncob, Na-montmorillonite, superabsorbent composite, water absorhility
