The bio-polyester polyol has been prepared by azelaic acid and 1,3-propanediol(1,3-PD) from biomass with esterification synthesis method, and MDI (4,4'-methylenebis (phenyl isocyanate)), H12MDI and IPDI (isophorone diisocyanate) were used as isocyanates, 1,4-butanediol(1,4-BD) was used as chain extender. It also had been set the general polyurethane with SS-106 polyol, and bio-polyurethane without chain extender as control groups. The viscoelastic behaviors of the bio-polyurethanes were explored using a rubber processing analyzer (RPA) in the mode of strain sweep. And the mechanical properties (tensile strength, hardness value, resilience, abrasion resistance) were characterized by UTM, shore A tester, ball rebound and taber abrasion resistance tester. From the results above, the bio-polyurethane which synthesized in this research with bio-polyester polyol showed better abrasion resistance, elongation rate and viscoelastic properties compared to the general polyurethane material as elastomers.

바이오매스 유래의 azelaic acid, 1,3-propanediol(1,3-PD)를 사용하여 바이오 폴리에스터 폴리올을 합성하였다. 합성한 폴리에스터 폴리올에 MDI(4,4'-methylenebis (phenyl isocyanate)), H12MDI and IPDI(isophorone diisocyanate)와 사슬연장제로 1,4-butanediol(1,4-BD)을 넣고 바이오 폴리우레탄을 합성하였다. 그리고 사슬연장제 없이 poly(1,4-butylene adipate)를 폴리올로 사용하여 일반 폴리우레탄을 합성하였다. 고분자 가공분석기(RPA)의 변형 스윕(strain sweep) 기능을 사용하여 제조된 폴리우레탄의 점탄성을 조사하였다. UTM, shore A, ball rebound 및 taber기계를 사용하여 폴리우레탄의 인장강도, 경도, 반발탄성 및 내마모성 측정을 통하여 기계적 물성을 확인하였다. 제조된 바이오 폴리우레탄은 일반 폴리우레탄보다 더 좋은 점탄성, 내마모성 및 신장률(elongation rate)을 보였다.

Keywords: bio-polyurethane, bio-polyester polyol, viscoelastic properties, abrasion resistance, mechanical properties