화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2013년 봄 (05/01 ~ 05/03, ICC JEJU)
권호 17권 1호
발표분야 포스터-고분자
제목 Study on preparation of a microvoided PLA film by a bi-orientation method  
초록   In this study, a microvoided poly(L-lactide) (PLA) film was prepared by blending PLA and  polymer with lower Tm than 160 ℃ such as PP, PE, PS, PVA for packaging and construction materials.  
Two polymer was blended by a mixer, and melted at higher temperature than 200 ℃, and casted by cooling roll at lower temperature than 20 oC. Finally, the microvoided PLA film with 20~30 um thick was obtained by stretching both mechanical and transverse direction. Its composition was PLA of 80 ~ 95 wt% and the rest polymer of 5~20 wt%. PLA and PP (or PE, PS, PVA) is immiscible and promoted the initiation of crystallization each other. The density of the microvoided PLA film was 0.95~1.0 g/cm3 due to the formation of many microvoids in film inside. The microvoided film with  paper-like properties and touch was applied for packaging and construction materials.  
저자 이상은, 김문선, 김병우
소속 성균관대
키워드 Microvoided Film; PLA; Bi-orientation; Low-density
E-Mail moonsunkim@skku.edu