| 聚(2-丙烯酰胺甲基-6-十二烷基硼酸二乙醇胺酯)与十二烷基苯磺酸钠混合溶液的表面活性 |
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| 引用本文： | 王海鹰,柴立元,吕春绪.聚(2-丙烯酰胺甲基-6-十二烷基硼酸二乙醇胺酯)与十二烷基苯磺酸钠混合溶液的表面活性[J].物理化学学报,2010,26(1):73-78. |
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| 作者姓名： | 王海鹰 柴立元 吕春绪 |
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| 作者单位： | School of Metallurgical Science and Technology, Central South University, Changsha 410083, P. R. China; School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China |
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| 基金项目： | 国家杰出青年科学基金，国家自然科学基金重点项目，国家科技支撑计划重点项目，教育部科技重大项目，湖南省节能减排科技重大专项 |
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| 摘 要： | 聚(2-丙烯酰胺甲基-6-十二烷基硼酸二乙醇胺酯)(PADB)是一类两亲性聚硼酸酯.本文通过表面张力法考察了不同相对分子质量的PADB水溶液的表面活性;重点研究了PADB与十二烷基苯磺酸钠(SDBS)在0.5 mol.L-1 NaCl溶液中的相互作用,通过正规溶液理论,计算PADB/SDBS混合体系的胶束化参数,并与单体ADB/SDBS混合溶液体系进行了比较.结果表明,PADB相对分子质量可达1.5×104-3.5×104,随分子量增加,PADB水溶液中临界胶束浓度(cmc)增大,但cmc时的表面张力(γcmc)维持在31 mN.m-1左右(298 K);加入PADB后,SDBS溶液表面张力-浓度对数(γ-lgc)曲线出现两处转变点,即c1和c2点,但c1和c2皆小于纯SDBS溶液的临界胶束浓度(cmcSDBS),即c1c2cmcSDBS.PADB加入量越大,相对分子质量越低,SDBS溶液的表面活性越强.将聚硼酸酯PADB溶液视为特殊状态的单体ADB溶液,通过近似处理,计算得到PADB/SDBS混合胶束中相互作用参数βm在-2.4到-4.7之间,活度系数f1m1,表明聚硼酸酯PADB与SDBS有较强的相互作用;当混合体系中PADB的ADB结构单元摩尔分数x1为0.47时,|βm|达到最大.相比于单体ADB/SDBS混合体系,当x10.8时,PADB/SDBS混合体系|βm|值较大,相互作用更强;随x1增大,混合胶束中聚合物PADB的ADB结构单元摩尔分数x1m不断增加,但其值低于ADB/SDBS混合体系.
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| 关 键 词： | 表面活性剂 聚硼酸酯 混合胶束 相互作用 胶束化参数 |
| 收稿时间： | 2009-08-19 |
| 修稿时间： | 2009-10-04 |
Surface Activity of a Mixed Aqueous Solution of Poly(6-dodecyl-2-(acrylamidomethoxy)-1,3,6,2-dioxaza borocane)and Sodium Dodecylbenzene Sulfonate |
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| WANG Hai-Ying,CHAI Li-Yuan,L Chun-Xu.Surface Activity of a Mixed Aqueous Solution of Poly(6-dodecyl-2-(acrylamidomethoxy)-1,3,6,2-dioxaza borocane)and Sodium Dodecylbenzene Sulfonate[J].Acta Physico-Chimica Sinica,2010,26(1):73-78. |
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| Authors: | WANG Hai-Ying CHAI Li-Yuan L Chun-Xu |
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| Institution: | School of Metallurgical Science and Technology, Central South University, Changsha 410083, P. R. China; School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China |
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| Abstract: | Poly(6-dodecyl-2-(acrylamidomethoxy)-1,3,6,2-dioxaza borocane)(PADB) is a novel amphiphilic polyborate.The surface activity of the polyborate PADB with various weight-average molecular weights(Mw) in an aqueous solution was measured by surface tension methods.Using regular solution theory,the interaction between PADB and sodium dodecylbenzene sulfonate(SDBS) in 0.5 mol.L-1 NaCl aqueous solution was studied and compared with the monomeric ADB/SDBS mixed system.Results showed that the Mw of the polyborate PAD... |
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| Keywords: | Surfactant Polyborate Mixed micelles Interaction Micellization parameter |
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