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국회도서관 홈으로 정보검색 소장정보 검색

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PLA/PEG blends composed of poly(lactic acid) (PLA) and poly (ethylene glycol) (PEG) were prepared via melt blending for bioabsorbable filament sutures. The effects of blend composition and blending time on the alcoholysis or esterification in the PLA/PEG blends were investigated. Their properties due to PLA/PEG block copolymer were characterized by 1H-NMR, GPC, and DSC analyses. Consequently, PLA/PEG block copolymers have been formed during the melt blending by alcoholysis or esterification from a new peak due to -CH2(c') appeared at 4.3 ppm. In addition, the molecular weights of the blends processed in Haake Rheomix for 10~30 minutes at 220oC under screw speed 20 rpm decreased with increasing PEG contents and blending time. Their thermal properties such as melting temperature and heat of fusion due to PLA in the blends decreased with increasing PEG contents and blending time. However, their melting temperature and heat of fusion due to PEG increased with an increase of PEG content under constant blending time.

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권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
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참고문헌 (20건) : 자료제공( 네이버학술정보 )

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번호 참고문헌 국회도서관 소장유무
1 (2002) Synthesis of Segmented and Block Poly Copolymers and Comparison of In-vitro Behavior of the Copolymer, 미소장
2 Sutures, 미소장
3 (2004) Poly(D,L-lactide-ran-e-caprolactone)-poly(ethylene glycol)-poly(D,L-lactide-ran-e-caprolactone) as Parenteral Drug-delivery Systems, 미소장
4 (2000) Properties and Morphology of Poly 4. Effects of Structural Parameters on Long-term Hydrolysis of Poly, 미소장
5 Poly(arylene ether)s 네이버 미소장
6 (2002) Effect of Molding Temperature on the Fracture Toughness of Biodegradable Poly, 미소장
7 (1998) The Properties and Biodegradability of PCL/PLA Blends, 미소장
8 (1998) Synthesis and Biodegradability of Block Copolymer Comprising Poly(L-lactic acid) and Poly(oxypropylene) for Medical Suture, 미소장
9 (1999) A Study on the Characteristics and Miscibility of PLA/PCL Blends -Ester Interchange Reaction and Thermal Properties-, 미소장
10 (2003) The Effects of Blend Composition and Blending Time on the Ester Interchange Reacion and Tensile Properties of PLA/LPCL/HPCL Blends, 미소장
11 (1997) Improvement of Antistatic Performance of PET by Using Block Copolymer Influence of Molecular Weight of Poly on the Thermal Properties and Moisture Absorptivity of PET-PEG Multi-block Copolymer, 미소장
12 (2004) Methoxy Poly(ethylene glycol)-Poly(lactide) (MPEG-PLA) Nanoparticles for Controlled Delivery of Anticancer Drugs, 미소장
13 (2004) The Influence of Soft Segment Length on the Properties of Poly(butylene terephthalate-co-succinate)-b-Poly(ethylene glycol) Segmented Random Copolymers, 미소장
14 (2004) Biocompatibility of Poly Diblock Copolymers with Nanophase Separation, 미소장
15 (2004) Preparation and Characterization of Biodegradable Poly Microcapsules Containing Erythromycin by Emulsion Solvent Evaporation Technique, 미소장
16 (2003) Enzymatic Hydrolysis by Cutinase of PEG-co-PLA Copolymers Spread Monolayers, 미소장
17 (2003) Crystallization and Phase Separation in Blends of High Stereoregular Poly, 미소장
18 The effect of end groups of PEG on the crystallization behaviors of binary crystalline polymer blends PEG/PLLA 네이버 미소장
19 (2004) Porous Poly(L-lactic acid)/Poly(ethylene glycol) Blend Films, 미소장
20 (2002) Synthesis and Degradation Behaviors of PEO/PLA/PEO Tri-block Copolymers, 미소장