Characterization and antimicrobial properties of ferulic acid grafted self‐assembled bacterial cellulose‐chitosan membranes

AbstractActive packaging materials are the subject of research because their performance exceeds that of traditional packaging. From this class, antimicrobial materials extend the shelf-life of products and reduce the risk of contamination by pathogens. In this paper, new composite materials with antimicrobial properties are obtained by using polyvinyl alcohol and bacterial cellulose powder. Potassium (2E,4E)-hexa-2,4-dienoate was used as the antimicrobial agent. The films thus obtained were characterised using Fourier-transform infrared spectroscopy and scanning electron microscopy. Mass transfer phenomena concerning the release of potassium (2E,4E)-hexa-2,4-dienoate were investigated. The results indicated that the new biocomposite films could be used as antimicrobial packaging materials.

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Preparation of aminoalkyl‐grafted bacterial cellulose membranes with improved antimicrobial properties for biomedical applications

Journal of Biomedical Materials Research Part A ◽

10.1002/jbm.a.36884 ◽

2020 ◽

Vol 108 (5) ◽

pp. 1086-1098 ◽

Cited By ~ 5

Author(s):

Wei He ◽

Zhaoyu Zhang ◽

Yudong Zheng ◽

Shen Qiao ◽

Yajie Xie ◽

...

Keyword(s):

Bacterial Cellulose ◽

Biomedical Applications ◽

Antimicrobial Properties ◽

Cellulose Membranes

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Precise nanofiltration in a fouling-resistant self-assembled membrane with water-continuous transport pathways

Science Advances ◽

10.1126/sciadv.aav9308 ◽

2019 ◽

Vol 5 (8) ◽

pp. eaav9308 ◽

Cited By ~ 14

Author(s):

Xunda Feng ◽

Qaboos Imran ◽

Yizhou Zhang ◽

Lucas Sixdenier ◽

Xinglin Lu ◽

...

Keyword(s):

Continuous Medium ◽

Antimicrobial Properties ◽

High Fidelity ◽

Size Selectivity ◽

Transport Pathways ◽

Selective Transport ◽

Novel Approach ◽

Nanostructured Polymer ◽

Self Assembled ◽

Potential Use

Self-assembled materials are attractive for next-generation membranes. However, the need to align self-assembled nanostructures (e.g. cylinders, lamellae) and the narrow stability windows for ordered bicontinuous systems present serious challenges. We propose and demonstrate a novel approach that circumvents these challenges by exploiting size-selective transport in the water-continuous medium of a nanostructured polymer templated from a self-assembled lyotropic H1 mesophase. Optimization of the mesophase composition enables high-fidelity retention of the H1 structure on photoinduced cross-linking. The resulting material is a mechanically robust nanostructured polymer possessing internally and externally cross-linked nanofibrils surrounded by a continuous aqueous medium. Fabricated membranes show size selectivity at the 1- to 2-nm length scale and water permeabilities of ~10 liters m−2 hour−1 bar−1 μm. Moreover, the membranes display excellent antimicrobial properties due to the quaternary ammonium groups on the nanofibril surfaces. These results represent a breakthrough for the potential use of polymerized lyotropic mesophase membranes in practical water purification applications.

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