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A facile strategy to fabricate antibacterial hydrophobic, high-barrier, cellulose papersheets for food packaging.
- Source :
-
International Journal of Biological Macromolecules . May2023, Vol. 236, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- As a traditionally used packaging material, natural cellulose-based paper has poor barrier properties to water and oxygen, which severely limits its wide application in food packaging. In this study, we report a new sustainable approach to producing hydrophobic, high-barrier, and antibacterial packaging materials from cellulose paper. In this process, commercially available microcrystalline cellulose was first modified by long-chain stearic acid to form hydrophobic microcrystalline cellulose ester and then mixed with stearic acid as filler in the subsequent surface coating of bagasse fibre paper. The microcrystalline cellulose ester/stearic acid-coated paper (MSP) exhibited good water repellency and oxygen barrier activity due to a continuous hydrophobic film that formed, which completely covered the pores of the original bagasse fibre paper. The coated MSP sample also showed excellent dimensional stability in water and a good wet tensile strength of 16 MPa. In addition, poly(hexamethylene guanidine) (PHMG) was chemically grafted onto the free carboxyl groups of the MSP surface layer, and the resulting MSP- g -PHMG samples exhibited excellent antibacterial activity against Escherichia coli and Listeria monocytogenes. The biodegradable cellulose-based MSP- g -PHMG sample significantly delayed the decay of raspberry during storage, indicating its potential application in food packaging. • Microcrystalline cellulose-based eco-friendly coating agent for paper surface functionalization • The coated cellulose paper sheet showed good waterproofing, oxygen barrier, and antibacterial properties. • The designed cellulose-based paper sheet is well suited for food packaging. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01418130
- Volume :
- 236
- Database :
- Academic Search Index
- Journal :
- International Journal of Biological Macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 162977138
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2023.123630