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 language | English |
|---|---|
| Pages (from-to) | 519-523 |
| Number of pages | 5 |
| Journal | Polymer (Korea) |
| Volume | 28 |
| Issue number | 6 |
| Publication status | Published - 2004 Nov |
| Externally published | Yes |
Keywords
- Biodegradable polymer
- Maleic anhydride
- Modified starch
- Poly(lactic acid)
ASJC Scopus subject areas
- Chemical Engineering(all)
- Polymers and Plastics
- Materials Chemistry