화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2006년 봄 (04/06 ~ 04/07, 일산킨텍스)
권호 31권 1호
발표분야 기능성 고분자
제목 Preparation and Characterization of Poly(L-lactic acid)-g-Multiwalled Carbon Nanotubes
초록 Multiwalled carbon nanotubes (MWCNT) were functionalized with poly(L-lactic acid) (PLLA) with different molecular weights using the “grafting to” technique. The oxidized MWCNT were converted to the acyl-chloride-functionalized MWCNT by treating them with thionyl chloride and reacting them with PLLA to prepare the MWCNT-g-PLLA. FTIR and Raman spectroscopy revealed that the PLLA was covalently attached to the MWCNT, and the weight gain due to the functionalization was determined by thermogravimetric analyses. The amount of grafted PLLA depended on the molecular weight of the PLLA. The PLLA coated on the MWCNT became thicker and more uniform with increasing PLLA molecular weight from 1000 to 3000. However, the amount of grafted PLLA became lower when the molecular weight of PLLA was further increased to 11 000 and 15 000, and the PLLA attached to the MWCNT showed a squid leg-like morphology forming blobs and leaving much of the MWCNT surface bare.
저자 박병현, 김훈식, 윤진산
소속 인하대
키워드 Poly(L-lactic acid); carbon nanotube; Synthsis
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