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苯磺酸钠表面活性剂在聚丙烯酰胺键合硅胶固定相上作用的热力学 被引量:3

Thermodynamics of Sodium p-n-Alkylbenzene Sulfonates Surfactants on Partial Hydrolytic Polyacrylamide-Bonded Silica Stationary Phase
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摘要 采用红外光谱、元素分析、X-射线光电子能谱对制备的部分水解聚丙烯酰胺键合硅胶进行了表征,并将其作为液相色谱固定相,以V(Methanol)/V(H2O)=10/90、水、模拟地层水分别作为流动相,测定了不同碳数的直链烷基对位取代苯磺酸钠在该固定相上的色谱保留参数,并对苯磺酸钠表面活性剂和固载聚丙烯酰胺间的相互作用进行了热力学研究。结果表明,直链烷基对位取代苯磺酸钠表面活性剂和部分水解聚丙烯酰胺的作用强弱及其构象变化的大小均随取代基碳数的增加而增加,随环境亲油性的增强而减小。 A new HPLC stationary phase of partial hydrolytic polyacrylamide-bonded silica was prepared and characterized by FT-IR,elemental analysis and X-ray photoelectron spectroscopy.The retention parameters of sodium p-n-alkylbenzene sulfonates on partial hydrolytic polyacrylamide-bonded silica stationary phase was investigated in the mobile phases of V(Methanol)/V(H2O)=10/90,water and simulation formation water,respectively.The thermodynamics of the interaction between sodium p-n-alkylbenzene sulfonates and partial hydrolytic polyacrylamide was investigated by HPLC.The quantitative analysis of both the interaction between sodium p-n-alkylbenzene sulfonates surfactants and partial hydrolytic polyacrylamide and the conformational change of sodium p-n-alkylbenzene sulfonates surfactants were obtained,which was that with the increase of substituent carbon number,both the interaction and conformational change of sodium p-n-alkylbenzene sulfonates surfactants increased,while both decreased with the increase of environmental hydrophobicity.
出处 《石油学报(石油加工)》 EI CAS CSCD 北大核心 2011年第1期117-122,共6页 Acta Petrolei Sinica(Petroleum Processing Section)
基金 国家科技重大专项项目(2008ZX05010-004,2008ZX05011) 甘肃省科技支撑计划项目(0804GKCA034)资助
关键词 聚丙烯酰胺 表面活性剂 对烷基苯磺酸钠 固定相 热力学 polyacrylamide surfactant sodium p-n-alkylbenzene sulfonates stationary phase thermodynamics
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