日韩av大片在线观看欧美成人不卡|午夜先锋看片|中国女人18毛片水多|免费xx高潮喷水|国产大片美女av|丰满老熟妇好大bbbbbbbbbbb|人妻上司四区|japanese人妻少妇乱中文|少妇做爰喷水高潮受不了|美女人妻被颜射的视频,亚洲国产精品久久艾草一,俄罗斯6一一11萝裸体自慰,午夜三级理论在线观看无码

 文獻(xiàn)名： Bismuth phosphinate incorporated nanocellulose sheets with antimicrobial and barrier properties for packaging applications

 

作者：Maisha Maliha^a, Megan Herdman^b, Rajini Brammananth^c, Michael McDonald^d, Ross Coppel^c, Melissa Werrett^b, Philip Andrews^b, Warren Batchelor^a 

a    Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, VIC, 3800, Australia

b    School of Chemistry, Monash University, VIC, 3800, Australia

c    Department of Microbiology, Monash University, VIC, 3800, Australia

d    Centre for Geometric Biology, School of Biological Sciences, Monash University, VIC, 3800, Australia

 

摘要：The incorporation of an organobismuth complex into a nanocellulose matrix to develop a free-standing antimicrobial barrier material was investigated. The non-toxic complex, phenyl bismuth bis(diphenylphosphinato) was used as the additive to impart antimicrobial properties to nanocellulose sheets for the development of paper-based renewable and biodegradable active packaging material. A spraying technique was used to prepare sheets with different loadings of the organobismuth complex and its effects on antimicrobial and barrier properties were studied. Morphological studies of the sheets revealed the overall distribution of the complex throughout the nanocellulose matrix, with occasional clustering behaviour on the surface. Water vapour permeability of the paper sheets increased very slightly with loading of the bismuth complex, but remained in the range acceptable for packaging materials. The physical and mechanical properties of the sheets were also affected by the addition of the bismuth complex in the structure, and hence a trade-off needs to be made between the loading level and the material performance for commercialization. The composite sheets were able to inhibit the growth of bacteria and fungi, including strains of multidrug resistant bacteria. Moreover, the paper showed continued release of the bismuth complex over time with effective lifetime depending on the loading. In summary, this paper describes the preparation and characterization of a sustainable and ecofriendly antimicrobial composite paper, using a poorly soluble bismuth complex dispersed into a nanocellulose matrix, which shows the potential to be used as an active packaging material.