3-Methyl-1,5-Pentanediol (MPD)을 함유한 폴리올을 이용한 수분산 폴리우레탄의 합성 및 특성 비교
Synthesis and Comparison of Properties of Waterborne Polyurethanes Using Polyols Containing 3-Methyl-1,5-Pentanediol (MPD)
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초록
가지형 구조의 3-Methyl-1,5-pentanediol (MPD)을 함유한 폴리에스테르 폴리올 및 폴리카보네이트 폴리올을 이용하여 수분산 폴리우레탄(WPU)을 합성하였다. 물리적 특성 비교를 위하여 1,4-butanediol (BD)과 adipic acid로부터 얻어진 폴리에스테르 폴리올 및 1,6-hexane diol (HD)/ 1,4-butanediol (BD)로부터 얻어진 폴리카보네이트 폴리올을 이용하여 수분산 폴리우레탄 수지를 합성하였다. 본 연구는 폴리올 분자구조(소프트 세그먼트의 분자구조)가 WPU의 물리적 특성에 미치는 영향을 조사하였으며, MPD가 함유된 폴리올을 이용하여 합성된 WPU의 경우가 MPD를 함유하지 않은 경우보다 100% 탄성률 및 인장 강도는 낮게 나타났으며, 신장률은 높게 나타났다. MPD 성분을 함유한 WPU 필름의 투명도는 MPD 성분을 함유하지 않은 WPU 필름보다 광 투광도가 우수함을 알 수 있었다.
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.
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