Nanocellulose is a material which can be extracted from wood, with interesting properties and wide range of possible applications. A novel method to produce nanocellulose as well as the possibility of using polyelectrolyte adsorption to alter the interaction with bacteria of nanocellulose based materials will be presented.<br/>Nanocellulose can be produced by a novel concurrent esterification and hydrolysis of wood pulp fibers in molten oxalic acid dihydrate. The resulting mixture can then be fibrillated to nanocellulose. The resulting nanocellulose obtained with a high yield had a high surface charge, and contained particles with a morphology similar to both cellulose nanocrystals and cellulose nanofibrils. The material was used to prepare both Pickering emulsions and thin films.<br/>To investigate the antimicrobial effect of different nanocellulose-based materials, i.e. films and aerogels were treated with environmentally friendly alternatives to traditional biocides to prevent microbial growth. By using the multilayer technique, i.e. altering the surface charge of the material, by polyelectrolyte adsorption of polyvinyl amine and polyacrylic acid it is possible to modify cellulose based materials. and to prepare materials with both high and low bacterial adhesion as well as materials with either contact active or non-adhesive antibacterial properties, both of which are sustainable alternatives to the currently used antibacterial materials. Nanocellulose is a material which in the near future will probably be used in a wide range of applications. In order to improve the usability of nanocelluloses it will be necessary to use novel production methods. By modifying the bacterial adhesion to materials prepared from nanocellulose, many new medical and health applications emerge.

Biointeractive cellulose based nanomaterials with antibacterial properties

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.