| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 고분자 나노구조와 물성 |
| 제목 | Structure and mechanical properties of fibers and films in biodegradable microbial polyesters |
| 초록 | Poly([R]-3-hydroxybutyrate) (P(3HB)) and its copolymers are accumulated by a wide variety of microorganisms as intracellular carbon and energy material, and are extensively studied as biodegradable and biocompatible thermoplastics. However, these microbial polyesters have not been recognized as practical because of its stiffness and brittleness. Recently, we succeeded in obtaining strong fibers and films by new drawing techniques from microbial polyesters produced by both wild-type and recombinant bacteria. The improvement of mechanical properties of fibers and films is due not only to the orientation of molecular chains but also to the generation of a zigzag conformation and network structure formed by fibril and lamellar crystals. The structure of strong fiber with tensile strength of over 1.0 GPa was analyzed by micro-beam X-ray diffraction with synchrotron radiation. The strong fibers and films were completely degraded in natural river freshwater or by extracellular polyhydroxybutyrate depolymerases. In this paper, I present the processing, mechanical properties, highly ordered structure and biodegradability of strong fibers and films produced from microbial polyesters. Ref: Tadahisa Iwata, Macromolecular Bioscience, 5, 689-701 (2005) |
| 저자 | Tadahisa IWATA |
| 소속 | Polymer Chemistry Laboratory |
| 키워드 | |
