期刊
JOURNAL OF RENEWABLE MATERIALS
卷 7, 期 6, 页码 567-582出版社
TECH SCIENCE PRESS
DOI: 10.32604/jrm.2019.00034
关键词
Biocomposite; Cellulose I; Cellulose II; Nanocrystalline cellulose (NCC); physico-mechanical properties; Thermal stability
资金
- National Research Center, Giza, Egypt
In this study, nanocrystalline celluloses were used to enhance physical, mechanical and water vapor barrier properties of chitosan films for potential food packaging applications. Two different mineral acids (sulfuric and phosphoric) were used to extract nanocrystalline cellulose from date palm sheath fibers. The influence of cellulose I and cellulose II on the properties of the isolated nanocrystalline celluloses (e.g., yield, energy and length of infra- and intermolecular hydrogen bonds, and degree of substitution) were studied too. The characteristics of chitosan biocomposite film with phosphorylated nanocrystalline cellulose were compared to those with sulfated nanocrystalline cellulose. Results showed that besides cellulose polymorphism, the ionic ester groups on the surface of nanocrystalline cellulose is one of the factors influencing the physical, chemical, mechanical, and water vapor barrier properties in chitosan/nanocrystalline cellulose biocomposites.
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