SURFACE AND INTERFACIAL FT-IR SPECTROSCOPIC STUDIES OF LATEXES .8. THE EFFECT OF PARTICLE AND COPOLYMER COMPOSITION ON SURFACTANT EXUDATIONIN STYRENE-N-BUTYL ACRYLATE COPOLYMER LATEX FILMS
Jp. Kunkel et Mw. Urban, SURFACE AND INTERFACIAL FT-IR SPECTROSCOPIC STUDIES OF LATEXES .8. THE EFFECT OF PARTICLE AND COPOLYMER COMPOSITION ON SURFACTANT EXUDATIONIN STYRENE-N-BUTYL ACRYLATE COPOLYMER LATEX FILMS, Journal of applied polymer science, 50(7), 1993, pp. 1217-1223
Polarized attenuated total reflection Fourier transform infrared (ATR.
FT-IR) spectroscopy was used to identify the mobility and surfactant
exudation of sodium dioctyl sulfosuccinate (SDOSS) surfactant molecule
s to the film-air (F-A) and film-substrate (F-S) interfaces in styrene
/n-butyl acrylate (Sty/n-BA) latex films. It was found that, depending
upon the latex particle composition, the surfactant molecules could b
e driven to the F-A or F-S interfaces. The primary factors that govern
ed the direction of exudation were the compatibility of the latex comp
onents, interfacial film-substrate surface tension, and the chemical c
omposition of the latex particles. Concentration, as well as orientati
on, of the hydrophilic SO3-Na+ surfactant ends changed as a function o
f depth and the latex particle composition. (C) 1993 John Wiley & Sons
, Inc.