11-苄硒基十一羧酸铵盐的双重刺激响应性质

doi:10.13218/j.cnki.csdc.2018.03.001

Abstract

Abstract: A kind of redox and CO₂/N₂ dual stimuli-responsive surfactant ammonium 11-benzylselanyl undecanoate (BSeUA) was synthesized.The molecular structure change of BSeUA triggered by redox and CO₂/N₂ was studied with Fourier Transform Infrared Spectroscopy (FT-IR),Nuclear Magnetic Resonance (NMR) and Electrospray Ionization Mass Spectrometry (ESI-MS).Results show that the selenium-containing group can be reversibly switched between bivalent selenide (-Se-) and tetravalent selenoxide (-Se=O) by alternately adding hydrogen peroxide and hydrazine hydrate,and the CO₂-sensitive group can be reversibly switched between carboxylate (-COO^-) and carboxylic acid (-COOH) by bubbling CO₂ and N₂.Thus,the BSeUA-stabilized emulsion can be switched reversibly between de-emulsification and re-emulsification over five times at least.No obvious adverse changes in droplet size and the relative stability of the regenerated emulsions are observed.

Key words: anionics surfactant, emulsion, stimuli-responsive, CO₂/N₂, redox

CLC Number:

TQ423

QIN Fei, LIU Xue-feng. Dual stimuli-responsive properties of ammonium 11-benzylselanyl undecanoate[J].China Surfactant Detergent & Cosmetics, 2018, 48(3): 123-128.

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Dual stimuli-responsive properties of ammonium 11-benzylselanyl undecanoate

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