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Indexed by:期刊论文

Date of Publication:2013-07-01

Journal:TENSIDE SURFACTANTS DETERGENTS

Included Journals:SCIE、EI、Scopus

Volume:50

Issue:4

Page Number:270-276

ISSN No.:0932-3414

Key Words:Dialdehyde starch-aniline Schiff-base; foaming behavior; surface activity

Abstract:A foamable dialdehyde starch-aniline Schiff-base (DAS-AN) was synthesized by the reaction of dialdehyde starch (DAS) and oil-soluble aniline in a homogeneous dimethyl sulfoxide system under N-2 atmosphere. The DAS-ANs were characterized by gel permeation chromatography (GPC), Fourier-transform infrared spectroscopy (FT-IR) and NMR spectroscopy. Their foaming behavior and surface tension were investigated. Foaming power and stability tests were performed for solutions of DAS-ANs with different degrees of substitutions with aniline (DSAN) and concentrations. The maximum foaming power was 2.6 times the initial solution volume of the foam test in 450 mg . L-1 CaCO3 aqueous solution. The most stable foams only decreased by 6% in volume in deionized water after 20 min.