Studies of Degradation Behavior of Stereochemical Poly(lactide) Blend Fibers Prepared by Electrospinning

전기방사에 의한 이성질 폴리락타이드 블렌드의 섬유제조와 분해거동에 관한 연구

  • Jang, Ei-Sup (Department of Polymer Engineering, Pukyong National University) ;
  • Lee, Won-Ki (Department of Polymer Engineering, Pukyong National University)
  • Received : 2013.12.09
  • Accepted : 2014.02.10
  • Published : 2014.03.31


Poly(lactide)s(PLA) is an attractive material to solve the problem of waste plastic accumulation in nature because of its biodegradability. The lactide exists in three stereoisomeric configurations: L-lactide, D-lactide, and meso-lactide. PLA stereocomplexes, formed by the mixing of two enantiomers, poly(L-lactide)(PLLA) and poly(D-lactide)(PDLA), have many favorable characteristics because the stereocomplex showed $50^{\circ}C$ higher melting point than each enantiomeric polymer and the resistance toward degradation increased. In this study, we investigated the influence of the composition and the optical purity of each component on the formation of stereocomplexes. Also, the nanofibers of stereochemical PLA and their blends were prepared by electrospinning method. The properties of the obtained fibers were analyzed by differential scanning calorimetry and scanning electron microscopy. The results showed that a degree of stereocomplex was controlled by change of optical purity of each component. The enzymatic degradation of the fibers were strongly dependent on the stereocomplex.


Supported by : 한국연구재단


  1. Deitzel, J. M., Kleinmeyer, J. D., Hirvonen, J. K., Beck Tan, N. C., 2001, Controlled deposition of electrospun poly (ethylene oxide) fibers, Polymer, 42, 8163-8170.
  2. Dzenis, Y., 2004, Spinning continuous fibers for nanotechnology, Sci., 304, 1917-1919.
  3. Gopferich, A., 1996, Mechanisms of polymer degradation and erosion, Biomaterials, 17, 103-114.
  4. Huang, J. C., Shetty, A. S., Wang, M. S., 1990, Biodegradable plastics: a review, Adv. Polym. Technol., 1, 23-30.
  5. Kumbar, S. G., James, R., Nukavarapu, S. P., Laurencin, C. T., 2008, Electrospun nanofiber scaffolds: engineering soft tissues, Biomed. Mater., 3, 034002.
  6. Kuster, E., 1979, Biological degradation of synthetic polymers, J. Appl. Polym. Sci., 35, 395-404.
  7. Leung, W. W. F., Hung, C. H., Yuen, P. T., 2010, Effect of face velocity, nanofiber packing density and thickness on filtration performance of filters with nanofibers coated on a substrate, Sep. Pur. Tech., 71, 30-37.
  8. Marcos, S. A., 2007, Oxidation of polycaprolactone to induce compatibility with other degradable polyesters, Polym. Deg. Stab., 92, 986-996.
  9. Nakafuku, C., Sakoda, M., 1993, Melting and crystallization of poly (L-lactic acid) and poly(ethylene oxide) binary mixture, Polymer, 25, 909-909.
  10. Park, C. Y., Choi, Y. H., Lee, W. K., 2009, Study on Degradation Rates of Biodegradable Polymers by Stereochemistry, Environ. Sci., 18, 797-802.
  11. Reeve, M. S., Mccarthy, S. P., Downey, M. J., Gross, R. A., 1994, Polylactide stereochemistry: effect on enzymic degradability, Macromolecules, 27, 825-831.
  12. Roxana, A., Ruseckaite., Alfonso, J., 2003, Thermal degradation of mixtures of polycaprolactone with cellulose derivatives, Polym.. Deg. Stab., 81, 353-358.
  13. Shin, C., 2006, Filtration application from recycled expanded polystyrene, Collid. Inter. Sci., 302, 267-271.
  14. Slager, J., Domb, A. J., 2003, Biopolymer stereocomplexes, Adv. Drug. Del. Rev., 55, 549-583.
  15. Slager, J., Gladnikoff, M., Domb, A. J., 2001, Stereocomplexes, based on biodegradable polymers and bioactive macromolecules, Macromol. Symp., 175, 105-116.
  16. Taylor, G., 1969, Electrically driven jets, Proc. R. Soc. London., Ser. A., 313, 453-475.
  17. Wift, G., 1993, Directions for environmentally biodegradable polymer research, Acc. Chem. Res., 26, 105-110.
  18. Wnek, G. E., Carr, M. E., Simpson, D. G., Bowlin, G. L., 2003, Electrospinning of nanofiber fibrinogen structures, Nano. Lett., 3, 213-216.