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Construction of Chlorine Labeled ZnO–Chitosan Loaded Cellulose Nanofibrils Film with Quick Antibacterial Performance and Prominent UV Stability
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-06-21 , DOI: 10.1002/mame.202000228
Wei Ma 1 , Lin Li 1 , Xintong Xiao 1 , Haishun Du 2 , Xuehong Ren 1 , Xinyu Zhang 2 , Tung‐Shi Huang 3
Affiliation  

In this study, novel “green” and highly stable biocidal materials composed of cellulose nanofibrils (CNF) and ZnO–chitosan (ZnO–CS) hybrids are constructed by combing vacuum filtration and heat‐press processing without the use of any organic solvent. CNF/ZnO–CS films are soaked in a 10% sodium hypochlorite aqueous solution to endow antibacterial activity. The chlorinated CNF/ZnO–CS samples and chlorinated CNF/ZnO‐CS (CNF/ZnO‐CS‐Cl) possess quick antimicrobial activity against Staphylococcus aureus and Escherichia coli within 30 min of contact compared with CNF and CNF/ZnO–CS controls. The addition of ZnO endows the films with remarkable UV light stability. After exposure to a UV chamber for 24 h, the chlorine loadings on the prepared samples decrease to 0.13%, where 76% of the chlorine loss can be regained after rechlorination. Furthermore, cytotoxicity evaluations reveal the feasibility of the films for in vitro applications. The prepared rechargeable CNF/ZnO–CS–Cl films will have many promising antibacterial applications.

中文翻译:

具有快速抗菌性能和突出的紫外线稳定性的氯标记的ZnO-壳聚糖负载纤维素纳米纤维膜的构建

在这项研究中,由纤维素纳米原纤维(CNF)和ZnO-壳聚糖(ZnO-CS)杂化物组成的新型“绿色”且高度稳定的杀菌材料是通过真空过滤和热压工艺相结合而制成的,而无需使用任何有机溶剂。将CNF / ZnO–CS薄膜浸泡在10%的次氯酸钠水溶液中以赋予抗菌活性。氯化的CNF / ZnO-CS样品和氯化的CNF / ZnO-CS(CNF / ZnO-CS-Cl)样品对金黄色葡萄球菌大肠杆菌具有快速的抗菌活性。与CNF和CNF / ZnO–CS对照相比,在接触后30分钟内。ZnO的添加使薄膜具有出色的紫外线稳定性。暴露在紫外线室中24小时后,制得的样品上的氯含量降至0.13%,重新氯化后可恢复76%的氯损失。此外,细胞毒性评估揭示了该膜在体外应用中的可行性。制备的可充电CNF / ZnO–CS–Cl薄膜将具有许多有希望的抗菌应用。
更新日期:2020-08-12
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