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Maleic anhydride based copolymer dispersions for surface modification of polar substrates
Author(s) -
Gunbas I. D.,
Wouters M. E. L.,
Hendrix M. M. R. M.,
van Benthem R. A. T. M.,
Koning C. E.,
Noordover B. A. J.
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.35656
Subject(s) - contact angle , maleic anhydride , materials science , copolymer , polymer chemistry , fourier transform infrared spectroscopy , attenuated total reflection , styrene , coating , chemical engineering , composite material , polymer , engineering
In this article, we report the modification of poly(styrene‐ alt ‐maleic anhydride) (PSMA) with monofunctional amine‐terminated poly(dimethyl siloxane) (PDMS–NH 2 ) by thermal imidization, followed by the preparation and characterization of a surfactant‐free artificial latex thereof and application of this latex onto cotton fabric. The imidization reaction was monitored by NMR and attenuated total reflection Fourier transform infrared (ATR–FTIR) spectroscopy. 1,2‐Cyclohexyldicarboxylic anhydride was chosen as a model compound for the PSMA copolymer; this allowed a more detailed characterization by NMR and ATR–FTIR spectroscopy. After the PSMA/PDMS–NH 2 imidization reached completion, a fraction of the anhydrides were ammonolyzed. In this way, a self‐emulsifying latex with an average particle diameter of approximately 145 nm and a ζ potential of −56 mV was obtained. It was found that the PDMS‐modified PSMA latex in which 30 mol% of the initial amount of anhydride groups were previously imidized by using PDMS‐NH 2 and a fraction of the anhydrides were ammonolyzed with 0.3 eq. of NH 3 (PSMA30) was stable in the pH range 4–10. The water contact angle values of the latex‐coated cotton textile fabric indicated a hydrophobized surface, with a static contact angle of 135.7°± 1.2°. The washing studies with a standard soap solution of the cotton samples with or without crosslinker showed that the crosslinked PSMA30 offered a good coating durability to the cotton. This waterborne resin based on surfactant‐free latices displayed promising properties for coating applications and seemed to be very suitable for the hydrophobization of polar surfaces. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012