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EFFECT OF POLYMER POSITION IN NUTRIENT-SALT AGAR MEDIUM ON FUNGAL DEGRADATION OF POLYCAPROLACTONE
Korean Journal of Chemical Engineering, July 1995, 12(3), 320-324(5), 10.1007/BF02705763
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Abstract
In order to investigate the effect of contact type between microorganism and polymer on the degradation of polycaprolactone (PCL), fungal degradation test was performed by placing PCL films on the top, middle, and bottom of the nutrient-salt agar medium. After 3 weeks incubation, the pH values of agar conaining PCL films on the top, middle, and bottom were 5.82, 3.78, and 4.06, respectively. The weight losses of the PCL films were 5.10%, 13.89%, and 6.92%, respectively. However, the molecular weight change by degradation was not observed. It is supposed that the degradation of PCL films on the top position was caused by biophysical, biochemical and direct enzyme action, but that of PCL films on the middle or bottom position was caused by biochemical and direct enzyme action.
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Augusta J, Muller RJ, Widdecke H, Appl. Microbiol. Biotechnol., 39, 673 (1993)
Babinchak S, ChemTech., Dec., 728 (1991)
Benedict CV, Cook WJ, Jarrett P, Cameron JA, Huang SJ, Bell JP, J. Appl. Polym. Sci., 28, 327 (1983)
Evans JD, Sikdar SK, ChemTech., Jan., 38 (1990)
Gonsalves KE, Patel SH, Chen X, J. Appl. Polym. Sci., 43, 405 (1991)
Greizerstein HB, Syracuse JA, Kostyniak PJ, Polym. Degrad. Stabil., 39, 251 (1993)
Gu JD, Eberiel DT, McCarthy SP, Gross RA, J. Environ. Polym. Deg., 1, 143 (1993)
Huang SJ, Bansleben DA, Knox JR, J. Appl. Polym. Sci., 23, 429 (1979)
Jesudason JJ, Marchessault RH, Saito T, J. Environ. Polym. Deg., 1, 89 (1993)
Jun HS, "Synthesis of Copolyesters by Transesterification of Poly(ethylene terephthalate). Poly(ε-caprolactone) and Poly(ε-hydroxybutyrate), and Their Properties and Biodegradability," Ph.D. Thesis, KAIST, Taejon, Korea (1994)
Jun HS, Kim BO, Kim YC, Chang HN, Woo SI, J. Environ. Polym. Deg., 2, 9 (1994)
Kim YC, Jun HS, Chang HN, Woo SI, HWAHAK KONGHAK, 30(6), 718 (1992)
Leonas KK, Gorden RW, J. Environ. Polym. Deg., 1, 45 (1993)
Maddever WJ, Chapman GM, Plast. Eng., July, 31 (1989)
Pitt CG, Chasalow FI, Hibionada YM, Klimas DM, Schindler A, J. Appl. Polym. Sci., 26, 3779 (1981)
Rhee YH, Lee JA, Maeng PJ, Jun CL, Korean J. Microbiol., 28, 158 (1990)
Swift G, Accounts Chem. Res., 26, 105 (1993)
Taylor L, ChemTech., Sep., 542 (1979)
Tokiwa Y, Suzuki T, Takeda K, Agric. Biol. Chem., 52(8), 1937 (1988)
Tokiwa Y, Suzuki T, J. Appl. Polym. Sci., 26, 441 (1981)
Wool RP, Goheen SM, "Degradation Mechanisms in Polymer-Starch Composites," in Proceedings of the International Symposium on Biodegradable Polymers, October, 29-31, pp. 137-143, Tokyo, Japan (1989)
