A new eco-friendly biopolyurethane adhesives (WPIP) were prepared by using bio-based isosorbide carbonate diol, 1,5-pentamethylene diisocyanate or 1,5-pentamethylene diisocyanate. WPIP was manufactured according to the content of ethlyene diamine (EDA) as the chain extender, and synthesized WPIP was confirmed by using FTIR and ¹H NMR. Through DSC and TGA, it was confirmed that the thermal properties such as glass transition temperature and thermal decomposition temperature were improved as the content of EDA was increased. Mechanical and adhesive properties were evaluated by UTM. When the ratio of NCO/OH of prepolymer was 1.3, tensile and adhesive strength were the best.

바이오 기반의 isosorbide carbonate diol과 1,5-pentamethylene diisocyanate를 함께 이용하거나 1,5-penta-methylene diisocyanate만을 적용시킨 환경친화적인 폴리우레탄 접착제(WPIP)를 제조하였다. 사슬 연장제인 ethylene diamine(EDA)의 함량에 따라 WPIP를 제조하였고, FTIR과 ¹H NMR을 사용하여 WPIP의 합성을 확인하였다. 또한 DSC와 TGA를 통해 열적 특성인 유리전이온도 및 열분해 온도가 EDA의 함량이 높아질수록 향상되는 것을 확인하였고, UTM을 사용하여 WPIP의 접착 및 기계적 특성을 평가한 결과, prepolymer의 ratio of NCO/OH가 1.3일 때 접착 및 인장 강도가 가장 우수하였다.

Keywords: biopolyurethane, bio-based isosorbide carbonate diol, bio-based 1,5-pentamethylene diisocyanate