| 학회 | 한국고분자학회 |
| 학술대회 | 2002년 봄 (04/12 ~ 04/13, 서울대학교) |
| 권호 | 27권 1호, p.14 |
| 발표분야 | 특별 심포지엄 |
| 제목 | Surface Analysis of Biodegradable Polymer Thin Films |
| 초록 | In recent years, there are increasing demands for the use of degradable polymers, in particular to minimize polymer waste management caused by synthetic non-degradable polymers and for various biomedical applications. Biodegradation usually occurs through a hydrolyzable linkage along the main polymer chain, leading to a lower molecular weight and eventually to monomer production. Well known-synthetic hydrolyzable polymers are polyesters, polyanhydrides, and poly(amino acids). Many variables affecting degradability have been revealed, including morphology, molecular weight, hydrophobic/hydrophilic properties and the type of hydrolyzable linkage. Many workers have attempted to control the range of mechanical properties and hydrolytic degradability of many types of polyesters by blending and copolymerization for biomedical applications because they break down to common metabolites such as lactic or glycolic acid. The surface-layer properties of polymers have recently received great attention in practical applications, such as biomaterials, adhesives, paints and coatings, and so on, since these are strongly related to the associated functional properties. A desired polymer surface sometimes often cannot be obtained from the material itself but through chemical or physical modification. It has been well known that the component of a lower surface free energy in multicomponent polymeric systems, graft and block copolymers are preferentially concentrated at the air surface region in order to minimize the air/material interfacial free energy. The most common surface modification techniques include blending, copolymerization, chemical surface reactions, flame treatment, and plasma treatment. In this article, several methods have been applied to determine and to control the degradation rate of polyesters. The following subjects are discussed; ■ Enzymatic degradation of solution grown-PHB lamellar crystals1 ■ Hydrolytic kinetics of polyester monolayers2 ■ Retardation effect of enzymatic degradation by blending3 ■ Reorientation of PDMS-containing copolymers under water ■ Molecular weight determination by ESCA4 1. W. K. Lee, T. Iwata, H. Abe, and Y. Doi, Macromolecules, 33, 9535 (2000). 2. W. K. Lee and J. A. Gardella, Jr., Langmuir, 16, 3401 (2000). 3. W. K. Lee, Y. Doi, and C. S. Ha, Macromolecular Bioscience, 1, 114 (2001). 4. W. K. Lee, M. Toselli, and J. A. Gardella, Jr., Macromolecules, 34, 33439 (2001). |
| 저자 | 이원기 |
| 소속 | 부경대 |
| 키워드 | |
