MD膜驱剂/SDS混合体系的水溶液性质  

The Aqueous Solution Property of MDFFA/SDS Mixed System

作　　者：杨莉[1] 高芒来[1] 刘宏生[1] 韩翻珍[1] 

机构地区：[1]中国石油大学(北京)化工学院重质油国家重点实验室

出　　处：《石油化工高等学校学报》2007年第4期33-37,共5页Journal of Petrochemical Universities

基　　金：重质油国家重点实验室开放课题(2003-01)

摘　　要：通过电导率法测定临界胶束浓度(c_(mc)),研究了 MD 膜驱剂与阴离子表面活性剂(SDS)混合体系的胶束性质,通过透光率法研究了 MD 膜驱剂对阴离子表面活性剂与多价阳离子沉淀行为的影响。结果表明,MD 膜驱剂与 SDS 混合后可降低 SDS 的 c_(cm)并且 c_(cm)随着 MD 膜驱剂浓度的增加而减小;温度从25℃升至50℃,2 mmol/L的 MD 膜驱剂/SDS 混合体系的 c_(mc)降低;在所考察范围内,NaCl 的加入有利于混合体系 c_(cm)的降低。MD 膜驱剂与SDS 混合后没有发生沉淀现象,且 MD 膜驱剂可抑制 SDS 与多价阳离子 Ca^(2-)的沉淀行为,其效果比 NaCl,NaOH 和NaHCO_3抑制 SDS 与多价阳离子 Ca^(2-)沉淀的效果好。Critical micelle concentration （Cmc） Of molecular deposition filming flooding agent （MDFFA） and sodium dodecyl sulfate （SDS） mixed systems were determined by conductivity method, and the effect of MDFFA on the precipitating behavior of anionic surfactant and multivalent cation was studied by means of light transmission measurement. The results show that MDFFA can decrease the Cmc of SDS, the Cmc decreases with the increasing of the concentration of MDFFA. With the increasing of temperature from 25 ℃ to 50 C, the Cmc of 2 mmol/L MDFFA/SDS mixed system decreased. The Cmc of 2 mmol/L MDFFA/SDS decreased with the increasing of concentration of NaCl. The precipitating behavior did not happen when MDFFA and SDS were mixed. MDFFA can restrain the precipitating behavior of anionic surfactant and Ca^2＋ . The capability of MDFFA restrain the precipitating behavior is better than NaCl, NaOH and NaHCO3.

关 键 词：MD膜驱剂 十二烷基硫酸钠 临界胶束浓度 沉淀 

分 类 号：TQ423.1[化学工程]