| 十二烷基硫酸钠分子构象的拉曼光谱研究 |
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| 引用本文： | 王玮 郭宁. 十二烷基硫酸钠分子构象的拉曼光谱研究[J]. 辽宁大学学报(自然科学版), 1991, 18(3): 24-27 |
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| 作者姓名： | 王玮 郭宁 |
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| 作者单位： | 山东枣庄师专，辽宁大学化学系，黑龙江大学，辽宁大学分析测试中心 |
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| 摘 要： | 本文报导了固体和水溶液状态下十二烷基硫酸钠的拉曼光谱,对其主要振动谱带进行了归属,考察了水溶液中样品浓度以及温度变化对分子构象的影响。结果表明:固体样品分子的烷基链主要以全反式构象存在,而水溶液中样品分子的烷基链则以扭曲式构象存在,分子烷基链的有序性随水溶液中样品浓度的降低和温度的升高而减小;50％的水溶液在296K附近似乎发生了一个由凝胶到液晶相的相变。
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| 关 键 词： | SLS 分子构象 散射谱 表面活性剂 |
The Raman Spectroscopic Study on Molecular Conformations of Sodium Lauryl Sulfate |
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| Wang Wei Shangdong Zaozhuang Teachers CollegeGUO Ning Liaoning UniversityLi Fengfu Heilongjiang UniversityTie Mei Liaoning University. The Raman Spectroscopic Study on Molecular Conformations of Sodium Lauryl Sulfate[J]. Journal of Liaoning University(Natural Sciences Edition), 1991, 18(3): 24-27 |
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| Authors: | Wang Wei Shangdong Zaozhuang Teachers CollegeGUO Ning Liaoning UniversityLi Fengfu Heilongjiang UniversityTie Mei Liaoning University |
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| Affiliation: | Wang Wei Shangdong Zaozhuang Teachers CollegeGUO Ning Liaoning UniversityLi Fengfu Heilongjiang UniversityTie Mei Liaoning University |
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| Abstract: | The Raman spectra of sodium lauryl salfate (SLS)have been recorded as its solid and in its aqueous solutions. Some of the vibration bands of SLS have been assigned. Affections of concentration and temperature on molecular conformations in aqueous solution have been investigated. The results show that the molecular chains mainly exist in all-trans conformation in solid, while the molecular chains exist in gauche isomers in aqueous solutions. With the increasing concentration and decrea-sing temperature, the order degree of chains reduces. A 50% aqueous solution of SLS gives rise to a phase transition from gel to liquid-crystalline. |
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| Keywords: | sodium lauryl salfate conformation Raman spectrum |
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