Development of polylactic acid nanocomposite films reinforced with cellulose nanocrystals derived from coffee silverskin

Carbohydrate Polymers
Soo Hyun SungJaejoon Han

Abstract

Bio-nanocomposite films based on polylactic acid (PLA) matrix reinforced with cellulose nanocrystals (CNCs) were developed using a twin-screw extruder. The CNCs were extracted from coffee silverskin (CS), which is a by-product of the coffee roasting process. They were extracted by alkali treatment followed by sulfuric acid hydrolysis. They were used as reinforcing agents to obtain PLA/CNC nanocomposites by addition at different concentrations (1%, 3%, and 5% CNCs). Morphological, tensile, and barrier properties of the bio-nanocomposites were analyzed. The tensile strength and Young's modulus increased with both 1% and 3% CNCs. The water vapor permeability decreased gradually with increasing addition of CNCs up to 3% and good oxygen barrier properties were found for all nanocomposites. These results suggest that CNCs from CS can improve the physical properties of PLA-based biopolymer film. The developed PLA/CNC bio-nanocomposite films can potentially be used for biopolymer materials with enhanced barrier and mechanical properties.

References

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Citations

May 7, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Luigi CastaldoAlberto Ritieni
Jul 28, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Qianqian WangJun Liu
Jan 15, 2021·Polymers·Abdoulhdi A Borhana OmranMichal Petrů
Jan 22, 2021·International Journal of Biological Macromolecules·Hyeri KimJeyoung Park
May 27, 2020·International Journal of Biological Macromolecules·Masrat RasheedAnish Khan
Apr 20, 2021·Frontiers in Bioengineering and Biotechnology·Zhiqiang OuXueyu Du
Jun 14, 2019·International Journal of Biological Macromolecules·Zineb KassabAbou El Kacem Qaiss
Oct 16, 2018·Carbohydrate Polymers·Hirofumi KyutokuKazushi Yamada
Jun 9, 2021·Journal of Controlled Release : Official Journal of the Controlled Release Society·Ishaq LugoloobiYili Zhao
Jul 25, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Klementina Pušnik ČrešnarLidija Fras Zemljič
Aug 28, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xia WangMing-Hua Qiu

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