聚合物/蒙脱土复合耐高温预交联颗粒的研究  

Study on the polymer/MMT preformed particle gel with high temperature resistance

作　　者：崔国栋 冯建戈 张晓云 

机构地区：[1]中国石油大学(华东)理学院,山东青岛266580

出　　处：《应用化工》2016年第1期22-25,共4页Applied Chemical Industry

基　　金：国家自然科学基金(51374230)

摘　　要：采用水溶液聚合法,以丙烯酸(AA)、丙烯酰胺(AM)为单体,四烯丙基氯化铵(TAAC)为交联剂,过硫酸钾(KPS)为引发剂,聚合体系中加入蒙脱土(MMT),制备了聚合物/蒙脱土复合耐高温预交联颗粒。考察了MMT添加量、引发剂浓度、交联剂浓度对其吸水倍率的影响。研究结果表明,MMT表面—OH基团与单体发生接枝反应或者形成氢键,化学与物理交联形成三维的吸水网络空间结构,MMT的存在能显著提高吸水倍率并表现出良好的耐温性能,最佳条件下,25℃蒸馏丙烯酰胺(AM)水中达到225 g/g,200℃达到110 g/g。使用FTIR、XRD、SEM对样品进行表征和分析。Poly（ AA-g-AM）/MMT preformed particle gel（ PPG） was prepared by solution polymerization using teraallylammonium chloride（ TAAC） as crosslinker and potassium persulfate（ KPS） as initiator in aqueous solution. The effects of such factors as the amounts of montmorrillonite（ MMT）,initiator,crosslinker on water absorbency of the PPG was investigated. The addition of MMT could significantly improve water absorbency. The swelling ratio at the optimum conditions was 225 g/g and 110 g/g at 25 ℃and 200 ℃,respectively. The structure of PPG was characterized with Fourier transform infrared spectroscopy,X-ray diffraction,and scanning electron microscopy. The results show that the chemical and physical cross-linkages of —OH of MMT participate in the formation of the polymeric network the PPG.

关 键 词：复合预交联颗粒 MMT 耐高温 吸水倍率 

分 类 号：TQ050.43[化学工程] TQ050.425