用稀释法研究了自制的6种不同结构的烷基芳基磺酸盐(AAS)在多组分体系中形成微乳液的标准热力学函数,并考察了分子结构、温度、短链醇、含水量和无机盐含量对其的影响.结果表明,随着烷基芳基磺酸盐分子长烷基链碳原子数的增加,导致表面活性剂/正丁醇/正癸烷/水形成的微乳液体系中醇由油相转移到界面相的标准自由能△G0o→i减小,有利于微乳液的形成；△H0o→i无明显变化,△S0o→i增大,且与烷基链碳原子数呈线性关系.△S0o→i=1.7975n +71.538.随着表面活性剂分子芳环向烷基链中间位置移动,导致表面活性剂/正丁醇/正癸烷/水形成的微乳液体系中醇由油相转移到界面相的标准自由能△G0o→i减小,有利于微乳液的形成;△S0o→i增大,△H0o→i减小；温度的升高导致微乳液体系的△G0o→i减小,微乳液的形成更容易.随醇碳链上碳原子数增加,△G0o→i减小,有利于微乳液的形成,且△G0o→i与碳原子数n呈线性关系,△G0o→i=-2790.8n+7286.4(328 K)；含水量的增加导致△G0o→i增大,不利于微乳液的形成,且△G0o→i与含水量V也呈线性关系.△G0o→i=6697.8V-7170.4(318 K);无机盐浓度的增加导致△G0o→i减小,有利于微乳液的形成.
参考文献
| [1] | YU Tao,DING Wei,QU Guangmiao.Oilfield Chemicals[M].The Second Edition.Beijing:Petroleum Industry Press,2008:57-62(in Chinese).于涛,丁伟,曲广淼.油田化学剂[M].第2版.北京:石油工业出版社,2008:57-62. |
| [2] | ZHAO Guoxi.Principles of Surfactant Action[M].Beijing:China Light Industry Press,2003:88-96(in Chinese).赵国玺.表面活性剂作用原理[M].北京:中国轻工业出版社,2003:88-96. |
| [3] | DING Wei,WANG Yan,YU Tao,et al.Synthesis and Surface Properties of a Series of Sodium Dodecyl Xylene sulfonate Isomers[J].Chinese J Appl Chem,2007,24 (9):1019-1020(in Chinese).丁伟,王艳,于涛,等.系列十二烷基二甲苯基磺酸钠的合成与表面性能[J].应用化学,2007,24 (9):1019-1020. |
| [4] | SONG Aili.Synthesize of Alkylaryl Surfactants and Study of Structure-Property Relationship[D].Daqing:Daqing Petroleum Institute,2006(in Chinese).宋爱莉.烷基芳基磺酸盐的合成与结构性能研究[D].大庆:大庆石油学院,2006. |
| [5] | Cross J.Anionic Surfactants:Analytical Chemistry[M].New York,Basel,Hong Kong:Marcal Dekker,1998:45. |
| [6] | CHEN Zongqi,CHEN Lidian,HAO Ce,et al.Thermodynamics of microemulsion[J].Acta Chim Sin,1990,48:528-533(in Chinese).陈宗淇,陈立滇,郝策,等.微乳液的热力学性质[J].化学学报,1990,48:528-533. |
| [7] | GAO Xiugong,ZHANG Kechang,LI Ganzuo,et al.Surfactants Industry[M].Beijing:Chemistry Industry Press,1995:42-63 in Chinese).高修功,章克昌,李干佐,等.表面活性剂工业[M].北京:化学工业出版社,1995:42-63. |
| [8] | Gerbacia W E,Rosano H L J.Microemulsion:Formation and Stabilization[J].J Colloid and Interface Sci,1973,44(2):242-274. |
| [9] | SHEN Xinghai,WANG Wenqing,GAO Hongcheng.Calculating the Structural Parameters of Microemulsion Systems by Dilution Method[J].Acta Sci Nat Univ Penkinesis,1994,30(2):147-154(in Chinese).沈兴海,王文清,高宏成.稀释法求微乳液体系的结构参数[J].北京大学学报(自然科学版),1994,30 (2):147-154. |
| [10] | LI Ganzuo,WANG Xiuwen,SHU Yanling,et al.Influence of Alkyl Chain Length of Alcohol on the Thermodynamic Functions of Microemulsion[J].Acta Petrol Sin,1988,9(4):77-83(in Chinese).李干佐,王秀文,舒延凌,等.醇对微乳液热力学函数的影响[J].石油学报,1988,9(4):77-83. |
| [11] | LI Yikun,ZHAO Fulin,YANG Peng.The Effect of Inorganic Salts on Phase Diagrams of Microemulsion Formed with APEC (Na)[J].Oilfield Chem,2003,20(1):50-53(in Chinese).李宜坤,赵福麟,杨鹏.无机盐对APEC(Na)微乳相图的影响[J].油田化学,2003,20(1):50-53. |
| [12] | Linda J,Vicki C,Gregory G.Effect of Added Cosurfactant on Ternary Microemulsion Structure and Dynamics[J].Colloids Surf A,1997:129-130. |
| [13] | Agnes C,Bruno D,Maurice B.The Synthesis of Colloidal Particles of Calcium Thiophosphates in a Microemulsion:Influence of the Parameters of the Process[J].Colloids Surf A,2000,175 (3):321-334. |
| [14] | Prince L.Microemulsions:Theory and Practice[M].London:Academic Press N,1977:89-108. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%