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Surface and interfacial FTIR spectroscopic studies of latexes. XIII. Surfactant exudation in silicone-modified latex films

✍ Scribed by B.-J. Niu; Marek W. Urban

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
716 KB
Volume
60
Category
Article
ISSN
0021-8995

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✦ Synopsis

Exudation of sodium dioctylsulfosuccinate (SDOSS) surfactant molecules to the film-substrate (F-S) and film-air (F-A) interfaces in styrene/n-butyl acrylate (Styln-BA) latex films in the presence of trimethoxysilyl propylmethacrylate (MSMA) molecules was examined by polarized attenuated total reflection Fourier transform infrared (ATR FTIR) spectroscopy. It appears that SDOSS molecules are present at the F-A interface but are not detected at the F-S interface due to their displacement by MSMA. When the second layer of latex is deposited on the previously coalesced latex film with the same composition, SDOSS molecules are detected at the F-A of the top overlayer and the interfacial regions between both films. While the top film contains SDOSS surfactant molecules in their free or COOH hydrogen-bonded forms, the interfacial regions between the films exhibit arrays of SDOSS molecules preferentially parallel to the film surface.

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Surface and interfacial FTIR spectroscop
Surface and interfacial FTIR spectroscopic studies of latexes. XII. Particle size effect and surfactant behavior in electrodeposited Sty/n–BA latex films
✍ B.-J. Niu; Marek W. Urban πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 727 KB

Polarized attenuated total reflection Fourier transform infrared spectroscopy was used to assess the mobility and orientation of sodium dioctylsulfosuccinate surfactant molecules at the film-air (F-A) and film-substrate (F-S) interfaces in electrodeposited latex films. Copolymer compositions rangin