| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 가을 (10/06 ~ 10/08, 제주 ICC) |
| 권호 |
39권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Crystallization Behavior of Poly(L-lactic Acid)-Poly(dimethylsiloxane) Copolymers |
| 초록 |
Crystallinity of poly(l-lactic acid) [PLA]and its copolymer is known to be affected by its composition or sample processing methods like thermal treatment or drawing. Though various methods of evaluating its crystallinity have been reported by many researchers, we have focussed our attention on using factor analysis of the FTIR absorbance spectra to study the changes in crystalline behavior of PLA samples as a function of thermal treatment conditions. In the present study, neat PLA and PLA-PDMS copolymer(1, 3 and 5 wt.-% PDMS w.r.t. PLA content) solution-cast samples were annealed at different temperatures, and their crystalline-phase content was determined quantitatively as a function of annealing temperature. The changes in crystallinity upon the inclusion of PDMS segments (Tg = -127 oC) acting as a plasticizer or spacer in the otherwise rigid and high modulus PLA segments (Tg = 90 oC) is studied in detail. Acknowledgement: This work was supported by the MOTIE (Grant No. 10044953). |
| 저자 |
안유진1, Jin Lu2, P. Sathiyanathan1, Arun Anand Prabu1, 김갑진1
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| 소속 |
1경희대, 2단국대 |
| 키워드 |
Poly(lactic acid); Copolymer; FTIR; Factor analysis
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| E-Mail |
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