Abstract
A series of novel reactive polydimethylsiloxanes (PDMS) bearing hydroxypropyl group at both chain ends and carbonyl groups at the side chain were incorporated with toluene 2,4-diisocyanate, dimethylol propionic acid and polypropylene glycol by the prepolymer process to synthesize a series of reactive PDMS-modified waterborne polyurethanes. After post-added dihydrazide, self-crosslinking was achieved by the reaction between the dihydrazide and carbonyl group during film formation. The latex film properties of them were investigated compared with that of pure waterborne polyurethane. Crosslinking was indeed enhanced in the films. Tensile strength, elongation at break and higher performance in water and solvent adsorptions were also detected.
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We gratefully acknowledge the financial support of the Natural Science Foundation of Shandong Province (No.Y2006B22).
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Zhang, M., Wu, Y., Wu, H. et al. Study on reactive polydimethylsiloxane-modified waterborne polyurethanes. J Polym Res 19, 9807 (2012). https://doi.org/10.1007/s10965-011-9807-z
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DOI: https://doi.org/10.1007/s10965-011-9807-z