{"title":"NACL对某些阳离子表面聚糖胶束行为的影响","authors":"P. Vatta, R. Kaur","doi":"10.9790/5736-1005020104","DOIUrl":null,"url":null,"abstract":"An attempt has made to study the influence of NaCl on the micellar behaviour of some cationic surfactants by conductivity measurements. With increase in concentration of salt, the critical micelle concentration (CMC) of cetyltrimethylammoniumbromide (CTABr) decreases. For example, the CMCs of CTABr in 0.5,1, 2.5 and 5mM solutions of NaCl were 0.95, 0.89, 0.70, 0.51 respectively. The degree of dissociation i.e. β and Gibbs free energy of micellization, ΔG o mic, was also determined for each CMC value.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":"79 1","pages":"01-04"},"PeriodicalIF":0.0000,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Influence of NACL on the Micellar Behaviour of Some Cationic Surfactans\",\"authors\":\"P. Vatta, R. Kaur\",\"doi\":\"10.9790/5736-1005020104\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An attempt has made to study the influence of NaCl on the micellar behaviour of some cationic surfactants by conductivity measurements. With increase in concentration of salt, the critical micelle concentration (CMC) of cetyltrimethylammoniumbromide (CTABr) decreases. For example, the CMCs of CTABr in 0.5,1, 2.5 and 5mM solutions of NaCl were 0.95, 0.89, 0.70, 0.51 respectively. The degree of dissociation i.e. β and Gibbs free energy of micellization, ΔG o mic, was also determined for each CMC value.\",\"PeriodicalId\":14488,\"journal\":{\"name\":\"IOSR Journal of Applied Chemistry\",\"volume\":\"79 1\",\"pages\":\"01-04\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IOSR Journal of Applied Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.9790/5736-1005020104\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IOSR Journal of Applied Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.9790/5736-1005020104","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
摘要
通过电导率的测定，研究了NaCl对某些阳离子表面活性剂胶束行为的影响。随着盐浓度的增加，十六烷基三甲基溴化铵(CTABr)的临界胶束浓度(CMC)降低。例如，CTABr在0.5、1、2.5和5mM NaCl溶液中的cmc分别为0.95、0.89、0.70、0.51。测定了各CMC值的解离度(β)和胶束吉布斯自由能(ΔG o mic)。
Influence of NACL on the Micellar Behaviour of Some Cationic Surfactans
An attempt has made to study the influence of NaCl on the micellar behaviour of some cationic surfactants by conductivity measurements. With increase in concentration of salt, the critical micelle concentration (CMC) of cetyltrimethylammoniumbromide (CTABr) decreases. For example, the CMCs of CTABr in 0.5,1, 2.5 and 5mM solutions of NaCl were 0.95, 0.89, 0.70, 0.51 respectively. The degree of dissociation i.e. β and Gibbs free energy of micellization, ΔG o mic, was also determined for each CMC value.
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