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Enhanced mechanical properties, water resistance, thermal stability, and biodegradation of the starch-sisal fibre composites with various fillers.
- Source :
-
Materials & Design . Jan2021, Vol. 198, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- The poor performance and high cost of the starch-sisal fibre composites with open-cell structures prevent their usage as biodegradable biomass to replace plastics. Therefore, inorganic fillers [talcum powder (TP), CaCO 3 (CC)] and a bio-filler [eggshell powder (EP)] were added, and the resulting mechanical properties, water resistance, thermal stability and biodegradation characteristics were compared. Results show that the tensile strength of the EP-composite increases by 34% and the compressive strength of the CC-composite increases by 69% when compared with those of the non-filler (NF) composite. The mechanical properties of the composites improved because of the reduction of starch crystallinity and the formation of new hydrogen bonds. The EP-composite offered optimal cushioning owing to its uniform and dense open-cell structures. Besides, the CC- and EP-composites offered better thermal stability. The composites with fillers were more waterproof than the NF-composite (by approximately 33%). After conducting biodegradability tests for 30 days, the EP-composite lost 67% of its mass, which was more than those associated with the TP- and CC-composites and can be attributed to the presence of organic matter in the EP-composite. These results demonstrate the potential of EP to replace CC and TP for reinforcing the starch-fibre composites with open-cell structures. Unlabelled Image • A filler-reinforced rapidly degradable starch-fibre composite with open-cell structures was prepared. • Both bio-fillers and inorganic fillers can improve the mechanical properties, thermal stability and water resistance. • Bio-fillers were advantageous for rapid biodegradation. • Bio-fillers (eggshell powder) have the potential to replace inorganic fillers (talcum powder and CaCO 3). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02641275
- Volume :
- 198
- Database :
- Academic Search Index
- Journal :
- Materials & Design
- Publication Type :
- Academic Journal
- Accession number :
- 147856360
- Full Text :
- https://doi.org/10.1016/j.matdes.2020.109373