Compatibilization and properties of modified starch-poly(lactic acid) blend

Hwan Lee Sang, Kim Dukjoon, Ji Heung Kim, Hyun Lee Dong, Sang Jun Sim, Do Nam Jae, Kye Hyoungsan, Youngkwan Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Starch was grafted with maleic anhydride by melt process and then the grafted starch was blended with poly(lactic acid). The thermal properties of the poly(lactic acid), poly(lactic acid)/starch, and poly(lactic acid)/ modified starch were observed by DSC and TGA analysis. In the case of poly(lactic acid)/modified starch, an additional melting peak at 165°C accompanying with 172°C assigned to pure poly(lactic acid) melting transition was clearly displayed in DSC analysis. Also, smooth decomposition pattern between starch and poly(lactic acid) was also monitored in poly(lactic acid)/modified starch blend by TGA analysis. The modulus of poly(lactic acid)/modified starch was 12% higher than that of poly(lactic acid)/starch. The thermal and mechanical characteristics of poly(lactic acid)/modified starch might be due to the enhanced compatibilization between each components, which was also observed in SEM analysis.

Original languageEnglish
Pages (from-to)519-523
Number of pages5
JournalPolymer (Korea)
Volume28
Issue number6
Publication statusPublished - 2004 Nov 1
Externally publishedYes

Fingerprint

Compatibilizers
Lactic acid
Starch
Melting
poly(lactic acid)
Maleic Anhydrides
Maleic anhydride
Thermodynamic properties
Decomposition

Keywords

  • Biodegradable polymer
  • Maleic anhydride
  • Modified starch
  • Poly(lactic acid)

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Sang, H. L., Dukjoon, K., Kim, J. H., Dong, H. L., Sim, S. J., Jae, D. N., ... Lee, Y. (2004). Compatibilization and properties of modified starch-poly(lactic acid) blend. Polymer (Korea), 28(6), 519-523.

Compatibilization and properties of modified starch-poly(lactic acid) blend. / Sang, Hwan Lee; Dukjoon, Kim; Kim, Ji Heung; Dong, Hyun Lee; Sim, Sang Jun; Jae, Do Nam; Hyoungsan, Kye; Lee, Youngkwan.

In: Polymer (Korea), Vol. 28, No. 6, 01.11.2004, p. 519-523.

Research output: Contribution to journalArticle

Sang, HL, Dukjoon, K, Kim, JH, Dong, HL, Sim, SJ, Jae, DN, Hyoungsan, K & Lee, Y 2004, 'Compatibilization and properties of modified starch-poly(lactic acid) blend', Polymer (Korea), vol. 28, no. 6, pp. 519-523.
Sang HL, Dukjoon K, Kim JH, Dong HL, Sim SJ, Jae DN et al. Compatibilization and properties of modified starch-poly(lactic acid) blend. Polymer (Korea). 2004 Nov 1;28(6):519-523.
Sang, Hwan Lee ; Dukjoon, Kim ; Kim, Ji Heung ; Dong, Hyun Lee ; Sim, Sang Jun ; Jae, Do Nam ; Hyoungsan, Kye ; Lee, Youngkwan. / Compatibilization and properties of modified starch-poly(lactic acid) blend. In: Polymer (Korea). 2004 ; Vol. 28, No. 6. pp. 519-523.
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AB - Starch was grafted with maleic anhydride by melt process and then the grafted starch was blended with poly(lactic acid). The thermal properties of the poly(lactic acid), poly(lactic acid)/starch, and poly(lactic acid)/ modified starch were observed by DSC and TGA analysis. In the case of poly(lactic acid)/modified starch, an additional melting peak at 165°C accompanying with 172°C assigned to pure poly(lactic acid) melting transition was clearly displayed in DSC analysis. Also, smooth decomposition pattern between starch and poly(lactic acid) was also monitored in poly(lactic acid)/modified starch blend by TGA analysis. The modulus of poly(lactic acid)/modified starch was 12% higher than that of poly(lactic acid)/starch. The thermal and mechanical characteristics of poly(lactic acid)/modified starch might be due to the enhanced compatibilization between each components, which was also observed in SEM analysis.

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