Waterborne cationomer polyurethane coatings with improved hydrophobic properties. Issue 4 (15th May 2012)

• Record Type: Journal Article
• Authors: Król, Piotr; Król, Bożena; Stagraczyński, Ryszard; Skrzypiec, Krzysztof
• Is Part Of: Journal of applied polymer science. Volume 127:Issue 4(2013:Feb. 15)
• Page Start: 2508
• Page End: 2519
• Publication Date: 2012-05-15
• Subjects: waterborne polyurethane cationomers -- chemical structure -- 1H‐ -- 13C‐ and 19F‐NMR spectrometry -- estimation of the polarity level -- phase structure by AFM method; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.37552
• Languages: English
• ISSNs: 0021-8995

Abstract

Abstract: The AFM method was used to investigate the phase structure of the coatings, which have been obtained after application of polyurethane cationomers, synthesized in the reaction of 4, 4′‐methylenebis(phenyl isocyanate) or isophorone diisocyanate with polyoxyethylene glycol ( M = 600) and N ‐methyl or N ‐butyldiethanolamine with 2, 2, 3, 3‐tetrafluoro‐1, 4‐butanediol. Changes were discussed in the surface‐free energy (SFE) and its components, as calculated independently according to the method suggested by van Owens–Wendt, in relation to chemical structures of cationomers, as well as morphology of coating surfaces obtained from those cationomers. Fluorine incorporated into cationomers (about 2–5%) contributed to lower SFE values, down to about 30 mJ/m 2 . An attempt was made to use 1 H‐NMR spectroscopy to provide more extensive grounds for the effect of polyurethane chemical structures (by parameters κ) on the SFE of coatings obtained from such polyurethanes, with the values of SFE (γ S, γ p s ) and determined by the Owens–Wendt method. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 Abstract :