Journal
JOURNAL OF POLYMERS AND THE ENVIRONMENT
Volume 23, Issue 1, Pages 114-125Publisher
SPRINGER
DOI: 10.1007/s10924-014-0689-0
Keywords
Poly(lactic acid); Poly(butylene succinate); Microcrystalline cellulose; Waste-cotton fabric; Chain extender
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Funding
- 90th Anniversary of Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund)
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This study aimed to improve the brittleness and thermal stability of poly(lactic acid) (PLA) by inclusion of poly(butylene succinate) (PBS) and microcrystalline cellulose (MCC). Of the three PLA/PBS blends (10, 30 and 50 wt% PBS) evaluated, the 70/30 wt% blend exhibited the highest impact strength and elongation at break, but a lower thermal stability compared to that of the pure PLA. Scanning electron microscopy analysis confirmed the better compatibility of this 70/30 PLA/PBS blend. This blend was further filled with MCC. Based on thermogravimetric analysis, the thermal stability of the 70/30 PLA/PBS blend was improved by the addition of MCC [optimal at five parts by weight per hundred (phr)] and further still by the addition of the chain extender, Joncryl (TM), at 0.5 phr. The 70/30/5/0.5 PLA/PBS/MCC/Joncryl (TM) composite exhibited the highest impact strength, while the elongation at break was acceptable.
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