原子力显微镜对二次交联凝胶脱水机理的研究  

STUDY OF DEHYDRATION MECHANISM OF SEC-ONDARY CROSS-LINKED GELS

作　　者：罗宪波 武海燕[2] 蒲万芬[3] 赵金洲[3] 

机构地区：[1]中海油有限公司天津分公司,天津塘沽300452 [2]西南石油大学资源与环境学院 [3]"油气藏地质及开发工程"国家重点实验室.西南石油大学,四川成都610500

出　　处：《西南石油学院学报》2006年第1期65-67,共3页Journal of Southwest Petroleum Institute

摘　　要：利用原子力显微镜(AFM)研究了相同聚合物浓度的预凝胶和二次交联凝胶的微观形态结构,通过预凝胶和二次交联凝胶的形貌图对比研究,结果表明,二次交联凝胶的网络状结构上布满细小的“孔隙”和巨大不规则的“空洞”,“空洞”大小可达200nm。综合分析了实验观察结果,对“空洞”的形成机理及二次交联凝胶易脱水机理进行了探讨。In this paper, the microcosmic characteristic of performed gels and secondary cross -linked gels with the same concentration has been studied by atomic force microscopy (AFM). By comparing the images of performed gels with those of secondary cross- linked gels, results indicated that the microstructure of secondary cross- linked gels presented thick network in which very small holes and bigger irregularly holes were embedded. The width of the biggest irregularly holes was 200 nm. The experimental results were analyzed, and the formation mechanism of bigger irregularly holes and the mechanism of easier dehydration has been discussed.

关 键 词：二次交联凝胶 凝胶 聚丙烯酰胺 微观结构 脱水机理 原子力显微镜 

分 类 号：TE357.431[石油与天然气工程—油气田开发工程]