Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Effect of Surface Roughness on Biodegradability of Poly (3-hydroxybutyrate)

Poly(3-hydroxybutyrate) 표면 형태가 생분해에 미치는 영향

  • Kim, Mal-Nam (Department of Biology, Sangmyung University) ;
  • Lee, Ae-Ri (Department of Biology, Sangmyung University)
  • Published : 1999.09.01
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Abstract

The effect of surface roughness on biodegradability of poly (3-hydroxybutyrate) was investigated. The PHB film prepared by cooling the molten polymer slowly ($-0.5^{\circ}C$/min) had higher crystallinity and melting temperature than that prepared by quenching into liquid nitrogen followed by annealing at $90^{\circ}C$ for 2 hours. However, the former sample was found to degrade faster than the latter due to presence of microscopic crack. Roughening the surface of a PHB film by hot pressing under a coarse surfaced plate accelerated the bioerosion considerably of the sample in comparison with the sample having the same thermal history but smooth surface.

Poly(3-hydroxybutyrate)의 표면 형태가 생분해성에 미치는 영향을 조사하였다. 용융 상태의 PHB를 서냉 ($-0.5^{\circ}C$/min)시켰을 때 PHB의 결정화도는 액체질소 속으로 급냉한 후 $90^{\circ}C$에서 2시간 동안 숙성한 PHB의 결정화도보다 높게 나타났으나 전자의 PHB 시료는 미세 균열의 존재로 인하여 후자의 PHB 시료보다 더 빠르게 생분해되었다. 거친 표면을 가진 평판 위에서 hot press하여 표면을 거칠게 만든 PHB film의 생분해는 표면이 평활한 film보다 훨씬 더 빠르게 진행되었다.

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References

  1. Annual Book of ASTM Standard v.08.03 Standard test method for determining the aerobic biodegradation of plastic materials in the presence of municipal sewage sludge ASTM D 5209-91
  2. Polymer v.29 Poly-D(-) (3-hydroxybutyrate)/poly (ethylene oxide) blends : phase diagram, thermal and crystallization behaviour Avella M;E Martuscelli
  3. Polym. Networks Blends v.5 no.1 Influence of molecular weight and molecular weight distribution on crystallization and thermal behaviour of isotactic polypropylene Avella M;E Martuscelli
  4. J. Environ. Polym. Degrad. v.3 no.1 Method for increasing the biodegradability of cellulose esters and articles made of these esters Buchanan CM;CN Boggs;DD Dorschel;RM Gardner;RJ Komarek;TL Watterson;AW White
  5. Polymer v.30 Crystallization and thermal behaviour of poly (3-hydroxybutyrate)- based blends Greco P;E Martuscelli
  6. Kor. J. of Microbiol. v.36 no.2 Purification and properties of extracellular poly (3-hydroxybutyrate) depolymerase produced by Penicillium pinophilm Han JS;YJ Son;CS Chang;MN Kim
  7. Kor. J. of Mycol. v.23 no.4 Biodegradation of poly (3hydroxybutyrate) by Penicillium pinophilum Kim MN;EJ Kang
  8. Appl. & Environ. Microbiol. Properties of poly (3-hydroxybutyrate) depolymerase from a marine bacterium, Alcaligenes faecalis AE 122 Kita K.;K Ishimaru;M Teraoka;H Yanase;N Kato
  9. Macromol. Chem. v.193 Enzymaticic degradation of microbial poly (3-hydroxybutyrate) films Kumagai Y;Y Kanesawa;Y Doi
  10. Appl. & Environ. Microbiol. Microbial degradation of poly (3-hydroxybutyrate) and poly (3-hydroxybutyrate-co-3-hydroxybutyrate) in soils Mergaert J;A Webb;C Anderson;A Wouters;J Swings
  11. Ramsay JA;MCB Aly Hassan;BA Ramsay
  12. J. of Bacteriol. Molecular characterization of the extracellular poly (3-hydroxyoctanoic acid)〔P(3HO)〕-depolymerase gene of Pseudomonas fluorescens GK13 and of its gene product Schirmer A;D Jendrossek
  13. Polym. Eng. Sci. v.35 no.12 Identification of plastic waste using spectroscopy and neural net-works Scott DM;RL Waterland
  14. J. Appl. Polym. Sci. v.58 Structural characteristics of biodegradable thermoplastic starch/poly (ethylene-vinyl alcohol) blends Simmons S;EL Thomes
  15. Polymer v.35 no.24 Polymer review, Polymer blends containing poly (3-hydroxybutyrate)s Verhoogt H;BA Ramsay;BD Favis
  16. Chemtech. Biodegradable plastics from plants Williams SF;OP Peoples
  17. J. Polym. Sci. v.34 Compatibility and fungal degradation of poly (3-hydroxybutyrate) / aliphatic copolyester blend Yoon JS;MC Chang;MN Kim;EJ Kang;C Kim;IJ Chin