瓜尔胶交联冻胶微观结构的表征  

Microstructural characterization of crosslinked guar gum gel

作　　者：邓明宇[1,2] 

机构地区：[1]中国石油化学昆山公司,江苏昆山215300 [2]苏州大学材化部,江苏苏州215123

出　　处：《化学研究与应用》2017年第6期816-820,共5页Chemical Research and Application

基　　金：中国石油集团长城钻探工程有限公司项目(GWDC2016B09)资助

摘　　要：本文利用环境扫描电子显微镜(ESEM)有效地建立了冻胶微观形态的表征方法,并研究了碱性条件下硼砂和柠檬酸锆化物交联瓜尔胶冻胶的微观结构,通过比较,它们的结构存在很大的差异。这种结构差异解释了常温下硼砂交联瓜尔胶冻胶有着更好的固水性、弹性和挑挂性能。动态光散射的分析结果显示,硼砂的交联模式与柠檬酸锆化物交联模式是不同的,这种交联模式的差异,导致了两者交联冻胶微观结构的差异。The microstructural characterization of the gel morphology was established by ESEM. The microstructures of borax crosslinked guar gum gel and zirconium citrate crosslinked guar gum gel were characterized and compared.This structural difference explains that borax crosslinked guar gum gel at room temperature has better water-retention,elasticity and hanging performance.The resultsof DLSshow that the crosslinking mode of borax is different from that of citrate. The difference of crosslinking mode leads to the difference of the microstructure of the crosslinked gel.

关 键 词：瓜尔胶 交联冻胶 微观结构 ESEM 粘弹性能 

分 类 号：O632.51[理学—高分子化学]