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Preparation of PLA/PEG Block Copolymer via Melt Blend  

Yoon, Cheol-Soo (Department of Textile Engineering, Dankook University)
Ji, Dong-Sun (Department of Textile Engineering, Dankook University)
Publication Information
Textile Science and Engineering / v.43, no.5, 2006 , pp. 235-244 More about this Journal
Abstract
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 $^1$H-NMR, GPC, and DSC analyses. Consequently, PLA/PEG block copolymers were formed during the melt blending by alcoholysis or esterification from a new peak due to -CH$_2$(c') appeared at 4.3 ppm. In addition, the molecular weights of the blends processed in Haake Rheomix for 10$\sim$30 minutes at 220 $^{\circ}C$ 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.
Keywords
poly(lactic acid); poly(ethylene glycol); melt blending; alcoholysis; esterification;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 C. G. Cho, S. W. Woo, K. L. Choi, and S. S. Hwang, 'Improvement of Antistatic Performance of PET by Using Block Copolymer: Influence of Molecular Weight of Poly(ethylene glycol) on the Thermal Properties and Moisture Absorptivity of PET-PEG Multi-block Copolymer', Polymer(Korea), 1997, 21, 821-829
2 M. J. Lee, M. C. Lee, and P. K. Shin, 'The Properties and Biodegradability of PCL/PLA Blends', Polymer(Korea), 1998, 22, 93-98
3 W. C. Lai, W. B. Liau, and T. T. Lin, 'The Effect of End Groups of PEG on the Crystallization Behaviors of Binary Crystalline Polymer Blends PEG/PLLA', Polymer, 2004, 45, 3073-3080   DOI   ScienceOn
4 C. W. Lee, S. W. Oh, D. C. Kim, and R. Y. Lee, 'Synthesis and Biodegradability of Block Copolymer Comprising Poly(L-lactic acid) and Poly(oxypropylene) for Medical Suture', J Korean Fiber Soc, 1998, 35, 1-7
5 S. U. Lee, H. Y. Kim, D. R. Lee, and M. S. Khil, 'Synthesis of Segmented and Block Poly(L-lactide-co-p-dioxanone) Copolymers and Comparison of In-vitro Behavior of the Copolymer', J Korean Fiber Soc, 2002, 39, 167-172   과학기술학회마을
6 H. Tsuji and Y. Ikada, 'Properties and Morphology of Poly(L-lactide) 4. Effects of Structural Parameters on Long-term Hydrolysis of Poly(L-lactide) in Phosphate-buffered Solution', Polymer Degradation and Stability, 2000, 67, 179-189   DOI   ScienceOn
7 Y. Zhang, Z. Feng, Q. Feng, and F. Cui, 'The Influence of Soft Segment Length on the Properties of Poly(butylene terephthalate-co-succinate )-b- Poly( ethylene glycol) Segmented Random Copolymers', J European Polymer, 2004, 40, 1297-1308   DOI   ScienceOn
8 S. Aslan, L. Calandrelli, P. Laurienzo, M. Malinconoco, and C. Migliaresi, 'Poly(D,L-lactic acid)/Poly($\varepsilon$-caprolactone) Blend Membranes: Preparation and Morphological Characterization', J Materials Sci, 2000, 35, 1615-1622   DOI   ScienceOn
9 H. J. Cho, D. J. Chung, and J. H. An, 'Poly(D,L-lactide-ran-$\varepsilon$-caprolactone)-poly(ethylene glycol)-poly(D,L-lactide-ran-$\varepsilon$-caprolactone) as Parenteral Drug-delivery Systems', J Biomaterials, 2004, 25, 3733-3742   DOI   ScienceOn
10 Y. Dong and S. S. Feng, 'Methoxy Poly(ethylene glycol)-Poly(lactide) (MPEG-PLA) Nanoparticles for Controlled Delivery of Anticancer Drugs', J Biomaterials, 2004, 25, 2843-2849   DOI   ScienceOn
11 Y. K. Hong, 'Sutures', J Korean Fiber Soc, 1991, 28, 3-8
12 S. H. Hsu, C. M. Tang, and C. C. Lin, 'Biocompatibility of Poly(e-caprolactone )/Poly(ethylene glycol) Diblock Copolymers with Nanophase Separation', J Biomaterials, 2004, 25, 5593-5601   DOI   ScienceOn
13 T. Ivanova, A. Malzert, F. Boury, J. E. Proust, R. Verger, and I. Panaiotov, 'Enzymatic Hydrolysis by Cutinase of PEG-co-PLA Copolymers Spread Monolayers', J Colloids and Surfaces B: Biointerfaces, 2003, 32, 307-320   DOI   ScienceOn
14 Y. Hu, Y. S. Hu, V. Topolkaraev, A. Hiltner, and E. Baer, 'Crystallization and Phase Separation in Blends of High Stereoregular Poly(lactide) with Poly(ethylene glycol)', Polymer, 2003, 44, 5681-5689   DOI   ScienceOn
15 D. B. Lee, 'Effect of Molding Temperature on the Fracture Toughness of Biodegradable Poly(lactic acid) for Biomaterial', J Korean Fiber Soc, 2002, 39, 583-588   과학기술학회마을
16 S. J. Park and S. H. Kim, 'Preparation and Characterization of Biodegradable Poly(l-lactide)/Poly(ethylene glycol) Microcapsules Containing Erythromycin by Emulsion Solvent Evaporation Technique', J Colloid and Interface Sci, 2004, 271, 336-341   DOI   ScienceOn
17 S. H. Lee, S. H. Kim, Y. H. Kim, and Y. K. Han, 'Synthesis and Degradation Behaviors of PEO/PLA/PEO Tri-block Copolymers', J Macromolecular Res, 2002, 10, 85-90   DOI
18 D. S. Ji and C. S. Yoon, 'A Study on the Characteristics and Miscibility of PLA/PCL Blends -Ester Interchange Reaction and Thermal Properties-', J Korean Fiber Soc, 1999, 36, 25-33
19 C. S. Yoon and D. S. Ji, 'The Effects of Blend Composition and Blending Time on the Ester Interchange Reacion and Tensile Properties of PLA/LPCL/HPCL Blends', Fibers and Polymers, 2003, 4, 59-65   DOI   ScienceOn
20 K. Nakane, Y. Hata, K. Morita, T. Ogihara, and N. Ogata, 'Porous Poly(L-lactic acid)/Poly(ethylene glycol) Blend Films', J Appl Polym Sci, 2004, 94, 965-970   DOI   ScienceOn