Thermodynamic Association Behaviors of Sodium Dodecyl Sulfate (SDS) with Poly(4-vinylpyridine N-oxide) (PVPNO) at Different pH Values and Ionic Strengths

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	Thermodynamic Association Behaviors of Sodium Dodecyl Sulfate (SDS) with Poly(4-vinylpyridine N-oxide) (PVPNO) at Different pH Values and Ionic Strengths
	Wang, Hao 1; Fan, Yaxun 2; Wang, Yilin 2
刊名	JOURNAL OF SURFACTANTS AND DETERGENTS
	2017-05-01
卷号	20 期号:3 页码:647-657
关键词	Surfactant Polyelectrolyte Complexes Association Behaviors Microcalorimetry
英文摘要	The interaction of sodium dodecyl sulfate (SDS) with poly(4-vinylpyridine N-oxide) (PVPNO) at different pH values and ionic strengths has been studied by isothermal titration microcalorimetry, electrical conductivity and turbidity measurements. The solution pH significantly effects the formation of the PVPNO/SDS complex. At pH 1.5, the polymer PVPNO is a strong polycation, and the binding is dominated by electrostatic 1:1 charge neutralization with the anionic surfactant. At pH 6 and 8, the electrostatic attraction between SDS and PVPNO is weak, and the hydrophobic interaction becomes stronger. The effect of salt concentration on the interaction of SDS and PVPNO depends on the competition between the increase of interaction and the screening of interaction. This study based on the thermodynamic process gained deep insight into the effects of pH value and ionic strength on the interaction mechanism of surfactant with polyelectrolyte. We also constructed a simple model for the interaction of PVPNO and SDS system in different solution regions.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38335]
专题	化学研究所_胶体、界面与化学热力学实验室
作者单位	1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, POB 165, Taiyuan 030001, Shanxi, Peoples R China 2.Chinese Acad Sci, Inst Chem, Key Lab Colloid & Interface Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hao,Fan, Yaxun,Wang, Yilin. Thermodynamic Association Behaviors of Sodium Dodecyl Sulfate (SDS) with Poly(4-vinylpyridine N-oxide) (PVPNO) at Different pH Values and Ionic Strengths[J]. JOURNAL OF SURFACTANTS AND DETERGENTS,2017,20(3):647-657.
APA	Wang, Hao,Fan, Yaxun,&Wang, Yilin.(2017).Thermodynamic Association Behaviors of Sodium Dodecyl Sulfate (SDS) with Poly(4-vinylpyridine N-oxide) (PVPNO) at Different pH Values and Ionic Strengths.JOURNAL OF SURFACTANTS AND DETERGENTS,20(3),647-657.
MLA	Wang, Hao,et al."Thermodynamic Association Behaviors of Sodium Dodecyl Sulfate (SDS) with Poly(4-vinylpyridine N-oxide) (PVPNO) at Different pH Values and Ionic Strengths".JOURNAL OF SURFACTANTS AND DETERGENTS 20.3(2017):647-657.