Cellulose fiber-based food packaging papers with enhanced barrier and antibacterial properties were successfully fabricated by sequential deposition multilayers consisting of chitosan(CS)and carboxymethyl cellulose(CM...Cellulose fiber-based food packaging papers with enhanced barrier and antibacterial properties were successfully fabricated by sequential deposition multilayers consisting of chitosan(CS)and carboxymethyl cellulose(CMC)on paper surface.The formation of CS/CMC multilayers on paper surface was systematically characterized.The CS/CMC multilayers effectively improved not only the barrier properties of papers against grease,oil,water,air and water vapor,but also the mechanical properties of papers.Moreover,the CS/CMC multilayer-modified papers showed improved antibacterial activities against E.coli and S.aureus.A(CS/CMC)5 multilayer-modified paper exhibited the strongest antibacterial activity with growth inhibition rate of 95.8%against E.coli and 98.9%against S.aureus.No obvious cytotoxicity was detected for the obtained modified paper.Therefore,in consideration of its mechanical,barrier,antibacterial and safe performances,it is expected that the as-prepared cellulose fiber-based paper can be used as a promising material for food packaging.展开更多
基金supported by the National Natural Science Foundation of China(No.21965016 and No.21566020).
文摘Cellulose fiber-based food packaging papers with enhanced barrier and antibacterial properties were successfully fabricated by sequential deposition multilayers consisting of chitosan(CS)and carboxymethyl cellulose(CMC)on paper surface.The formation of CS/CMC multilayers on paper surface was systematically characterized.The CS/CMC multilayers effectively improved not only the barrier properties of papers against grease,oil,water,air and water vapor,but also the mechanical properties of papers.Moreover,the CS/CMC multilayer-modified papers showed improved antibacterial activities against E.coli and S.aureus.A(CS/CMC)5 multilayer-modified paper exhibited the strongest antibacterial activity with growth inhibition rate of 95.8%against E.coli and 98.9%against S.aureus.No obvious cytotoxicity was detected for the obtained modified paper.Therefore,in consideration of its mechanical,barrier,antibacterial and safe performances,it is expected that the as-prepared cellulose fiber-based paper can be used as a promising material for food packaging.
