نتایج جستجو برای: cationic gemini surfactants

تعداد نتایج: 29379  

Journal: :Zeitschrift für Physikalische Chemie 2023

Abstract Despite corrosion being an inevitable process, researchers strive to control corrosion. In this study, our goal was prepare two amido Gemini cationic surfactants, LAPG and MAPG, each with different alkyl chains multiple carbonyl groups as rich electronic centers. We aimed evaluate these surfactants potential inhibitors for carbon steel (CS) in 1 M HCl at temperatures of 25–55 ± 0.1 °C....

Journal: :Journal of colloid and interface science 2011
Xiaomei Pei Jianxi Zhao Xilian Wei

The formation and the properties of wormlike micelles in aqueous solutions of mixed cationic and anionic gemini surfactants, 2-hydroxyl-propanediyl-α,ω-bis(dimethyldodecylammonium bromide) (12-3(OH)-12) and O,O'-bis(sodium 2-dodecylcarboxylate)-p-benzenediol (C(12)ϕC(12)), have been studied by steady-state and dynamic rheological measurements at 25°C. With the addition of a small amount of C(12...

2015
Mustafa GUZEL Cevdet AKBAY Yatzka HOYOS David H. AHLSTROM

Mustafa GUZEL1, Cevdet AKBAY2*, Yatzka HOYOS2, David H. AHLSTROM2 1Istanbul Medipol University, International School of Medicine, Department of Medical Pharmacology (Chair), Regenerative and Restrorative Medicine Research Center (REMER) (Molecular Discovery and Development Group), Kavacık Campus, Kavacık/Beykoz-ISTANBUL 34810 2 Department of Chemistry and Physics, Fayetteville State University,...

Journal: :The journal of physical chemistry letters 2015
Dominic V Perroni Carlos M Baez-Cotto Gregory P Sorenson Mahesh K Mahanthappa

Network-phase lyotropic liquid crystals (LLCs) derived from the water-directed self-assembly of small molecule amphiphiles comprise a useful class of soft nanomaterials, with wide-ranging applications in structural biology and membrane science. However, few known surfactants enable access to these mesophases over wide temperature and amphiphile concentration phase windows. Recent studies have d...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2005
Paul A Fitzgerald Tim W Davey Gregory G Warr

The size and shape of micelles formed by dimeric polyoxyethylene (nonionic gemini) surfactants having the structure (Cn-2H2n-3CHCH2(OCH2CH2)mOH)2(CH2)6 with alkyl and ethoxy chain lengths ranging from n = 12-20 and m = 5-30 have been determined using small angle neutron scattering (SANS). The surfactants are polydisperse in the hydrophilic groups but otherwise analogous to the widely studied mo...

Journal: :Soft matter 2014
Meina Wang Yilin Wang

Coacervation is a phenomenon in which a colloidal dispersion separates into two immiscible liquid phases: a liquid rich in colloidal phase in equilibrium with another diluted liquid phase. Surfactant coacervation here refers to coacervation whose main components are surfactants with low molecular weights. Over the past two decades, surfactants have been greatly developed and studies on coacerva...

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