疏水改性黄原胶XG-C16溶液性能及微观结构探究  

Study on solution properties and microstructure of hydrophobic modified Xanthan gum——XG-C16

作　　者：胡钰灵 全红平[1,2] 黄志宇[1,2] HU Yu-ling;QUAN Hong-ping;HUANG Zhi-yu(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China;Oil&Gas Field Applied Chemistry Key Laboratory of Sichuan Province,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]西南石油大学油气田应用化学四川省重点实验室,四川成都610500

出　　处：《应用化工》2019年第11期2657-2661,2665,共6页Applied Chemical Industry

基　　金：四川省科技计划项目(2016FZ0121);西南石油大学科研启航计划项目(2015QHZ015);油气田应用化学四川省重点实验室开放基金(YQKF201401)

摘　　要：以1-溴代十六烷为醚化试剂,对黄原胶(XG)进行改性,制备了疏水改性黄原胶(XG-C16),研究了XG-C16溶液的溶液性能和微观形貌。结果表明,XG-C16溶液的表观粘度显著增加,缔合后的XG-C16溶液在140℃下表观粘度是相同浓度下XG溶液表观粘度的3.4倍,临界缔合浓度(CAC)为0.16%;相较于XG,XG-C16溶液具有更好的空间网状结构,表现出更加优良的耐温、耐剪切性能,在5.0%的NaCl加量下,缔合后的XG-C16溶液能保持较好的空间网状结构,抗盐曲线出现轻微的盐增稠效应。Xanthan gum(XG) were modified by 1-bromine generation hexadecane as etherification reagent,and hydrophobic modified Xanthan gum(XG-C16) were prepared,solution properties and the microstructure of XG-C16 were studied.The results show that the apparent viscosity XG-C16 solution increased significantly,is 3.4 times that of XG under 140 ℃ after association,the critical association concentration(CAC) is 0.16%;Compared with XG,XG-C16 solution has a better spatial network structure,showed better temperature and shear resistance,after the addition of NaCl to 5.0%,XG-C16 solution after association maintained a better spatial network structure and the curve of salt resistance showed a slight salt thickening effect.

关 键 词：黄原胶 疏水缔合聚合物 抗温抗盐 微观形貌 

分 类 号：TQ317[化学工程—高聚物工业] TE357[石油与天然气工程—油气田开发工程]