Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 110, Issue 5, Pages 3156-3161Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/app.28848
Keywords
adhesion; adhesives; polystyrene; polyurethanes; strength
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Waterborne polyurethane (WPU) adhesives modified by polystyrene (PS) were prepared through a pre-polymer mixing process from diisocyanates, an anionic polyester, internal emulsifiers, a neutralizer, a chain extender, and PS dispersions. The latter was preformed via the in situ polymerization of styrene in poly(1,4-butanediol adipate) diol. Transmission electron microscopy, Fourier transform infrared spectroscopy, and H-1-NMR techniques were used to characterize the PS dispersions and polyurethane (PU)-PS prepolymer. Experimental results with respect to the performance of the PU-PS adhesives indicate that suitable PS/polyester diol weight ratios improved the mechanical properties, thermal stability, water resistance, and initial adhesive strength of the pristine WPU adhesives. (c) 2008 Wiley Periodicals, Inc.
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