Korea-Australia Rheology Journal

The Korean Society of Rheology (한국유변학회)
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Characterization and processing of Biodegradable polymer blends of poly(lactic acid) with poly(butylene succinate adipate)

  • Lee, Sang-Mook (Department of Applied chemistry, Dongduk Women's University) ;
  • Lee, Jae-Wook (Applied Rheology Center, Department of Chemical Engineering, Sogang University)
  • Published : 2005.06.01
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Abstract

We investigated thermal, rheological, morphological and mechanical properties of a binary blend of poly(lactic acid) (PLA) and poly(butylene succinate adipate) (PBSA). The blends were extruded and their molded properties were examined. DSC thermograms of blends indicated that the thermal properties of PLA did not change noticeably with the amount of PBSA, but thermogravimetric analysis showed that thermal stability of the blends was lower than that of pure PLA and PBSA. Immiscibility was checked with thermal data. The rheological properties of the blends changed remarkably with composition. The tensile strength and modulus of blends decreased with PBSA content. Interestingly, however, the impact strength of PLA/PBSA (80/20) blend was seriously increased higher than the rule of mixture. Morphology of the blends showed a typical sea and island structure of immiscible blend. The effect of the blend composition on the biodegradation was also investigated. In the early stage of the degradation test, the highest rate was observed for the blend containing $80wt\%$ PBSA.

Keywords

References

  1. Cai, H., V. Dave, R. A. Gross and S. P. McCarthy, 1996, Effects of physical aging, crystallinity, and orientation on the enzymatic degradation of poly (lactic acid), J. Polym. Sci. Part B: Polymer Physics 40, 2701-2708 https://doi.org/10.1002/(SICI)1099-0488(19961130)34:16<2701::AID-POLB2>3.0.CO;2-S
  2. Grijpma, D. W., R. D. A. Van Hofslot, H. Super, A. J. Nijenhuis and A. J. Pennings, 1994, Rubber toughening of poly (lactide) by blending and block copolymerization, Polym. Eng. Sci. 34, 1674-1684 https://doi.org/10.1002/pen.760342205
  3. Huang, S. J., 1985, Encycl Polym Sci Eng 2: Biodegradable polymers. Wiley-Interscience, New York
  4. Liu, X., M. Dever, N. Fair and R. X. Benson, 1997, J. Environ. Polym. Degrad. 5, 225
  5. Lunt, J., 1998, Large-scale production, properties and commercial applications of polylactic acid polymers, Polym. Degrad. Stab. 59, 145-152 https://doi.org/10.1016/S0141-3910(97)00148-1
  6. Martin O. and L. Averous, 2001, Poly(lactic acid): plasticization and properties of biodegradable multiphase systems, Polymer 42, 6209-6219 https://doi.org/10.1016/S0032-3861(01)00086-6
  7. Mayer, J. M. and D. L. Kaplan, 1994, Trends in Polymer Science 2, 227-235
  8. Miyata, T. and T. Masuko, 1998, Crystallization behaviour of poly(L-lactide), Polymer 39, 5515-5521 https://doi.org/10.1016/S0032-3861(97)10203-8
  9. Nijenhuis, A. J., E. Colstee, D. W. Grijpma and A. J. Pennings, 1996, High molecular weight poly(L-lactide) and poly(ethylene oxide) blends: thermal characterization and physical properties, Polymer 37, 5849-5857 https://doi.org/10.1016/S0032-3861(96)00455-7
  10. Nishioka, M., T. Tuzuki, Y. Wanajyo, H. Oonami and T. Horiuchi, 1994, Japan Stud. Polym. Sci. 12, 584-590
  11. Perego, G., G. D. Cella and C. Bastioli, 1996, Effect of molecular weight and crystallinity on poly(lactic acid) mechanical properties, J. Appl. Polym. Sci. 59, 37-43 https://doi.org/10.1002/(SICI)1097-4628(19960103)59:1<37::AID-APP6>3.0.CO;2-N
  12. Roberts, R. C., 1970, The melting behavior of bulk crystallized polymers, J. Polym. Sci. PartB: Polym. Letters 8, 381-384 https://doi.org/10.1002/pol.1970.110080512
  13. Schwacch, M. Ver and G., J. Coudance, 1995, J. Macromol. Sci. Pure Appl. Chem. A32, 787
  14. Sweet, G. E. and J. P. Bell, 1972, Multiple endotherm melting behavior in relation to polymer morphology, J. Polym. Sci. Part A-2: Polymer Physics 10, 1273-1283 https://doi.org/10.1002/pol.1972.160100707
  15. Tokiwa, Y. and T. Suzuki, 1981, Hydrolysis of copolyesters containing aromatic and aliphatic ester blocks by lipase, J. Appl. Polym. Sci. 26, 441-448 https://doi.org/10.1002/app.1981.070260206
  16. Tsuji, H. and Y. J. Ikada, 1998, Blends of aliphatic polyesters. II. Hydrolysis of solution-cast blends from poly (L-lactide) and poly ($\epsilon$-caprolactone) in phosphate-buffered solution, J. Appl. Polym. Sci. 67, 405-415 https://doi.org/10.1002/(SICI)1097-4628(19980118)67:3<405::AID-APP3>3.0.CO;2-Q
  17. Van Krevelen, D. W., 1990, Properties of Polymers, Elsevier
  18. Wu, S., 1985, Phase structure and adhesion in polymer blends: A criterion for rubber toughening, Polymer 26, 1855-1863 https://doi.org/10.1016/0032-3861(85)90015-1
  19. Zhang, L., S. H. Goh and S. Y. Lee, 1998, Miscibility and crystallization behaviour of poly(L-lactide)/poly(p-vinylphenol) blends, Polymer 39, 4841-4847 https://doi.org/10.1016/S0032-3861(97)10167-7