Preparation of robust and fully bio-based modified paper via mussel-inspired layer-by-layer assembly of chitosan and carboxymethyl cellulose for food packaging.
Preparation of robust and fully bio-based modified paper via mussel-inspired layer-by-layer assembly of chitosan and carboxymethyl cellulose for food packaging.
复制标题
DOI：
10.1016/j.ijbiomac.2022.09.243
复制
发表时间：
2022-09
影响因子：
8.2
通讯作者：
Fuyou Yu;Hongbo Shi;Kun Wang;Hui Li;Lincai Peng
中科院分区：
文献类型：
--
作者：
Fuyou Yu;Hongbo Shi;Kun Wang;Hui Li;Lincai Peng
本研究提出了一种绿色、简单的制备坚固的全生物基改性纸的方法，即在纸表面逐层沉积壳聚糖（CS）和贻贝粘附的模拟蛋白质聚合物（多巴胺接枝羧甲基纤维素，CMC-g-DA），然后用高碘酸钠氧化交联。交联多层改性纸的力学性能、阻隔性能和抗菌性能随着双层数的增加而显著提高。与未改性纸相比，交联（CS/CMC-g-DA）6多层改性纸的抗拉强度提高了71.6%，空气渗透性和水蒸气渗透性分别下降了69.2%和56.3%，抗菌效率在90%以上。aureusandE。杆菌。特别是，交联多层改性纸，即使遭受强烈的腐蚀处理，仍保持了出色的功能稳定性。所获得的功能纸在常温条件下可有效延长双孢蘑菇的保质期至6天。相信本研究制备的鲁棒功能纸在食品包装领域具有广阔的应用前景。
A green and facile method was proposed to prepare robust and fully bio-based modified paper in this study, which involved in layer-by-layer deposition of chitosan (CS) and mussel adhesive protein-mimetic polymer (dopamine-grafted carboxymethyl cellulose, CMC-g-DA) on paper surface and subsequent oxidative cross-linking by sodium periodate. The mechanical, barrier and antibacterial properties of the cross-linked multilayer-modified paper significantly improved with the increased bilayer numbers. Compared with unmodified paper, cross-linked (CS/CMC-g-DA)6multilayer-modified paper exhibited 71.6 % improvement in tensile strength, 69.2 % and 56.3 % decline in air and water vapor permeability, as well as above 90 % antibacterial efficiency againstS. aureusandE. coli. Particularly, the cross-linked multilayer-modified paper maintained outstanding functional stability even after suffering from vigorously corrosive treatment. The obtained functional paper effectively extended the shelf-life ofAgaricus bisporusto 6 days under ambient conditions. We believed that the prepared robust functional paper in this study will have promising application prospect in food packaging field.