期刊
POLYMERS
卷 13, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/polym13030325
关键词
textile waste; cellulose nanofibre; green materials; biopolymers; environmental
资金
- Ministry of Education [FRGS-MRSA 203.PTEKIND.6711837]
The study explored the use of textile waste cellulose nanofibrillated fibre to enhance the properties of PLA/chitin biocomposites, showing significant improvements in mechanical, thermal, and morphological properties compared to neat PLA. The combination of cellulose nanofibrillated fibre, chitin, and PLA resulted in superior material properties over binary blends, demonstrating the potential for advanced biopolymer applications.
Textile waste cellulose nanofibrillated fibre has been reported with excellent strength reinforcement ability in other biopolymers. In this research cellulose nanofibrilated fibre (CNF) was isolated from the textile waste cotton fabrics with combined supercritical carbon dioxide and high-pressure homogenisation. The isolated CNF was used to enhance the polylactic acid/chitin (PLA/chitin) properties. The properties enhancement effect of the CNF was studied by characterising the PLA/chitin/CNF biocomposite for improved mechanical, thermal, and morphological properties. The tensile properties, impact strength, dynamic mechanical analysis, thermogravimetry analysis, scanning electron microscopy, and the PLA/chitin/CNF biocomposite wettability were studied. The result showed that the tensile strength, elongation, tensile modulus, and impact strength improved significantly with chitin and CNF compared with the neat PLA. Furthermore, the scanning electron microscopy SEM (Scanning Electron Microscopy) morphological images showed uniform distribution and dispersion of the three polymers in each other, which corroborate the improvement in mechanical properties. The biocomposite's water absorption increased more than the neat PLA, and the contact angle was reduced. The results of the ternary blend compared with PLA/chitin binary blend showed significant enhancement with CNF. This showed that the three polymers' combination resulted in a better material property than the binary blend.
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