화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터)
권호 40권 1호
발표분야 고분자구조 및 물성
제목 Strain-induced enthalpy relaxation in PLLA/PDLA blends
초록 Blends of poly(L-lactic acid)(PLLA) with poly(D-lactic acid)(PDLA) were prepared via solution blending. Blend films were obtained by compression molding at 190℃ with subsequent quenching in ice water. The films were stretched uniaxially at draw ratio of 2.5 at 10℃ above the glass transition temperature. All of the drawn films exhibited endothermic peaks just above the glass transition temperature. The endothermic heat varied depending on blend composition. Based on a thermodynamic model, the origins of strain-induced enthalpy relaxation in PLLA/PDLA blend were investigated.
저자 김성혜, 이상철
소속 금오공과대
키워드 PLA; poly(lactic acid); strain-induced enthalpy relaxation
E-Mail leesc@kumoh.ac.kr