聚亚胺类物质在抗温(w_1/o)/w_2多重乳液中的应用研究  

Thermal stability of multiple emulsion using polyisobutylene-succinimide as lipophilic surfactant and corresponding mechanism

作　　者：魏发林[1] 侯吉瑞[1] 岳湘安[1] 

机构地区：[1]中国石油大学采收率中心,北京昌平102249

出　　处：《功能材料》2006年第4期611-614,共4页Journal of Functional Materials

基　　金：国家"十五"科技攻关资助项目(2003BA613-07-05)

摘　　要：多重乳液的热稳定性是应用于石油工程等领域的关键。以聚氧乙烯失水山梨醇单月桂酸酯(T20)为亲水乳化剂,通过微观界面性质及宏观稳定性实验研究了聚异丁烯丁二酰亚胺(T161)为亲油乳化剂时多重乳液的热稳定性,借助界面吸附状态的研究对其热稳定机理进行了分析。同时对比了失水山梨醇单油酸酯(S80)为亲油乳化剂时多重乳液的相应性能。研究表明70℃条件下聚亚胺类物质制备的多重乳液30天后破裂率低于25%,具有良好的热稳定。原因在于其高的界面吸附平衡常数(93.4m3/mol)与单位摩尔乳化剂占据的界面面积(1.92×106m2/mol)。研究结果为多重乳液应用领域拓展奠定了基础。Thermal stability of multiple emulsion is the key factor when used in petroleum reservoir which always faced high temperature. Using tween 20 as hydrophilic surfactant, span80 and polyisobutylene-succinimide as lipophilic surfactant respectively, this property was studied intensively. Results of interracial shear viscosity and macroscopical released experiments under 70℃ both indicate that multiple emulsion using polyisobutylene-succinimide is far more stable than the latter. Further adsorption research identify that the corresponding mechanism lies in its higher interracial adsorption balance constant and interracial area occupied per-unit module, which is 3.79,4.67 times of the latter respectively.

关 键 词：多重乳液 聚亚胺物质 热稳定性 界面粘度 

分 类 号：O631.2[理学—高分子化学]