非离子型Gemini表面活性剂的性质  

Research on the properties of nonionic Gemini surfactants

作　　者：林梅钦[1] 丁波[1] 郑晓宇[1] 李明远[1] 

机构地区：[1]中国石油大学提高采收率研究中心,北京102249

出　　处：《应用化工》2010年第4期467-470,共4页Applied Chemical Industry

基　　金：国家重大科技专项资助(2008ZX05011)

摘　　要：Gemini表面活性剂具有的优良表面活性,使之有望作为三次采油用的表面活性剂。用界面张力仪及HAAKERS600流变仪研究了非离子型Gemini表面活性剂的表面活性及流变特性。结果表明,25℃下,氧乙基数(EO数)分别为8,10,12的3种非离子型Gemini表面活性剂8-NP-8、10-NP-10及12-NP-12的临界胶束浓度(cmc)值分别为:0.99,0.15和0.032 mmol/L;非离子型Gemini表面活性剂的表面活性及cmc值受电解质的影响较小;氧乙基数为12的非离子型Gemini表面活性剂可以使亲水及亲油固体表面的接触角明显降低,水润湿性增强;非离子型Gemini表面活性剂溶液的粘度随剪切速率增加基本保持不变,呈现出牛顿流体的特性。The nonionic Gemini surfactant has excellent surface activity which makes it have prospect of broad application in EOR. The properties of nonionic Gemini surfactants, such as 8-NP-8,10-NP-10 and 12-NP-12, were researched by using HAAKERS600 rheometer and interface tensiometer to determine their surface activity and rheologic properties. Results indicated that their critical micell concentration （cmc） and minimun surface tension decrease as the number of ethoxy groups（EO） on Gemini surfactant increase from 8 to 12. The cmc values of 8-NP-8, 10-NP-10 and 12-NP-12 at 25 ℃ are 0. 99,0. 15 and 0.032 mmol/L, respectively. Among these three kinds of nonionic Gemini, 12-NP-12 can remarkalSly decrease hydrophobie and hydrophilic solid surface contact angle and enhance its wettability to water. The experiments also proved the impact of electrolyte on their surface activity and cmc values are ignorable. The viscosity of 8-NP-8,10-NP-10 and 12-NP-12 almost unchanged these three kinds of nonionic Gemini surfactants aqueous solution are with increasing shearing rate and Newtonian fluid.

关 键 词：非离子型Gemini表面活性剂 表面张力 流变性 润湿性 

分 类 号：O631.3[理学—高分子化学]