Journal
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
Volume 8, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fbioe.2020.00980
Keywords
agricultural wastes; Artemisia selengensisstraw; hemicellulose; cellulose nanocrystals; biodegradable composite films; mechanical properties
Funding
- National Natural Science Foundation for Young Scientists of China [21908099]
- National Key Research and Development Program [2016YFA0204300]
- Key Research and Development Program Project Jiangsu Province [BE2018730]
- Natural Science Research Projects of Colleges and Universities in Jiangsu Province [18KJB530009]
- Jiangsu Synergetic Innovation Center for Advanced Bio-Manufacture [XTB1802, XTE1846]
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Artemisia selengensisstraw is an agricultural residue with great potential as a renewable resource because it is rich in lignocellulose. In this study,A. selengensisstraw was used as a source of hemicelluloses (ASH) and cellulose nanocrystals (ASCNC) to produce biodegradable films. Different content levels of ASCNC were used as additives to improve composite films with ASH and polyvinyl alcohol (PVA). Various mechanical and hydrophobic properties of the films were analyzed. The composite films enhanced by ASCNC exhibited greater strength and were more effective as a barrier to water vapor when compared to that of the control ASH/PVA film. The tensile strength of the composite film was increased 80.1% to 36.21 MPa with ASCNC loading exceeding 9%, and the water vapor transmission rate decreased 15.45% when 12% ASCNC was added. Furthermore, the ASCNC-enhanced ASH/PVA composite film reduced a greater amount of light transmission than the control film.
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