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http://dx.doi.org/10.17702/jai.2021.22.2.39

Synthesis and Comparison of Properties of Waterborne Polyurethanes Using Polyols Containing 3-Methyl-1,5-Pentanediol (MPD)  

Kim, Na-Young (Korea Institute of Footwear & Leather Technology)
Sur, Suk-Hun (Korea Institute of Footwear & Leather Technology)
Publication Information
Journal of Adhesion and Interface / v.22, no.2, 2021 , pp. 39-46 More about this Journal
Abstract
Waterborne polyurethanes (WPU) was synthesized using polyester polyol and polycarbonate polyol containing 3-Methyl-1,5-pentanediol (MPD) in a branched structure. To compare physical properties, WPUs were synthesized using polyester polyol obtained from 1,4-butanediol (BD) and adipic acid and polycarbonate polyol obtained from 1,6-hexane diol (HD)/ 1,4-butanediol (BD). This study investigated the effect of polyol molecular structure (molecular structure in soft segments) on the physical properties of WPUs. In the case of WPUs synthesized using polyols containing MPD, 100% modulus and tensile strength were lower than that without MPD, and elongation was higher. The transparency of WPU films with MPD were slightly better than WPU films without MPD.
Keywords
Polyurethane; Polycarbonate polyol; Branched Polyol; Emulsion; Modulus;
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