Effects of Calcium Ions on the Solubility and Rheological Behavior of a C22-Tailed Hydroxyl Sulfobetaine Surfactant in Aqueous Solution

doi:10.1021/acs.langmuir.7b03614

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	Effects of Calcium Ions on the Solubility and Rheological Behavior of a C22-Tailed Hydroxyl Sulfobetaine Surfactant in Aqueous Solution
	Ji, Xiuling 1; Tian, Maozhang 3; Ma, Desheng 3; Zhu, Youyi 3; Zhou, Zhao-Hui 3; Zhang, Qun 3; Wang, Yilin 1,2
刊名	LANGMUIR
	2018-01-09
卷号	34 期号:1 页码:291-301
ISSN号	0743-7463
DOI	10.1021/acs.langmuir.7b03614
英文摘要	Effects of calcium ions (Ca2+) on the solubility, aggregate structure, and rheological behavior of a C22-tailed zwitterionic surfactant, erucyl dimethyl amidopropyl hydroxyl sulfobetaine (EHSB), have been investigated in aqueous solution. In comparison with sodium ions (Na+), Ca2+ ions exhibit a much higher efficiency in decreasing the Krafft temperature (T-K ) of EHSB. Specifically, contrary to Na+ ions which have no obvious effect on the rheological properties of the EHSB solution, Ca2+ ions increase the viscosity of the EHSB solution at lower EHSB concentration, and enhance its elasticity at higher EHSB concentration. Moreover, Ca2+ ions raise the temperature needed for the elastic-to-viscous transition of the EHSB solution at higher concentration. At lower EHSB concentration, the hydrophobic interaction between the ultralong hydrocarbon chains induces a tighter packing of the hydrophobic chains by forming a more stretched configuration, while at higher EHSB concentration, the electrostatic attraction between Ca2+ ions and the sulfonate groups of EHSB induces a tighter packing of the headgroups by forming Ca2+-mediated bridges among the EHSB headgroups. Besides, the above interactions may strengthen the hydrogen bonding of OH groups and/or of C=O amide groups, which in turn facilitates the compact packing of the surfactant molecules in aggregates and promotes the growth and entanglement of wormlike micelles. Thus, the EHSB solution shows Ca2+-dependent rheological behaviors. The solubility and rheological properties of the ultralong chain surfactant solution can be simultaneously improved with the addition of divalent Ca2+ ions.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000422611500038
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45419]
专题	中国科学院化学研究所
通讯作者	Zhang, Qun; Wang, Yilin
作者单位	1.Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, Key Lab Colloid Interface & Chem Thermodynam,BNLMS, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.PetroChina Res Inst Petr Explorat & Dev, State Key Lab Enhanced Oil Recovery, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Ji, Xiuling,Tian, Maozhang,Ma, Desheng,et al. Effects of Calcium Ions on the Solubility and Rheological Behavior of a C22-Tailed Hydroxyl Sulfobetaine Surfactant in Aqueous Solution[J]. LANGMUIR,2018,34(1):291-301.
APA	Ji, Xiuling.,Tian, Maozhang.,Ma, Desheng.,Zhu, Youyi.,Zhou, Zhao-Hui.,...&Wang, Yilin.(2018).Effects of Calcium Ions on the Solubility and Rheological Behavior of a C22-Tailed Hydroxyl Sulfobetaine Surfactant in Aqueous Solution.LANGMUIR,34(1),291-301.
MLA	Ji, Xiuling,et al."Effects of Calcium Ions on the Solubility and Rheological Behavior of a C22-Tailed Hydroxyl Sulfobetaine Surfactant in Aqueous Solution".LANGMUIR 34.1(2018):291-301.