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Thermomechanical-induced polyelectrolyte complexation between chitosan and carboxymethyl cellulose enabling unexpected hydrolytic stability
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Chen, Pei, Xie, Fengwei, Tang, Fengzai and McNally, Tony (2020) Thermomechanical-induced polyelectrolyte complexation between chitosan and carboxymethyl cellulose enabling unexpected hydrolytic stability. Composites Science and Technology, 189 . 108031. doi:10.1016/j.compscitech.2020.108031 ISSN 0266-3538.
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WRAP-thermomechanical-induced-polyelectrolyte-complexation-chitosan-carboxymethyl-cellulose-enabling-unexpected-hydrolytic-stability-Xie-2020.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1904Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.compscitech.2020.10803...
Abstract
Natural biopolymers such as chitosan and cellulose have demonstrated huge potential in important and rapidly growing environmental and biomedical applications. However, it is always challenging to create advanced functional biopolymer materials with enhanced hydrolytic stability cost-effectively. Here, we report an advance in preparing biopolymer polyelectrolyte complexed materials based on chitosan and carboxymethyl cellulose (CMC) using a “dry”, thermo-mechanical kneading method. Despite the high hydrophilicity of chitosan and CMC, the resulting films showed excellent dimensional stability and structural integrity (27% dimensional expansion and 94% weight increase after hydration for one day). In comparison, chitosan-only films were swollen dramatically under the same conditions, with a 138% dimensional expansion and a 913% rise in weight, which were also fragile. We propose that our processing method led to polyelectrolyte complexation between chitosan and CMC generating physical crosslinking points in the materials, which stabilised the films in water. Interestingly, the greater hydrolytic stability of chitosan/CMC films is in contrast with their higher surface hydrophilicity, a contribution from CMC. Our simple approach to engineering high-performance biopolymer materials without resorting to complex chemistries can be envisioned to bring about a new direction in the design of advanced functional materials where sustainability and cost-effectiveness are priorities.
Item Type: | Journal Article | ||||||||||||
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Subjects: | T Technology > TP Chemical technology | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||||
Library of Congress Subject Headings (LCSH): | Chitosan -- Biotechnology, Biopolymers, Nanocomposites (Materials) -- Thermomechanical properties, Nanostructured materials | ||||||||||||
Journal or Publication Title: | Composites Science and Technology | ||||||||||||
Publisher: | Pergamon | ||||||||||||
ISSN: | 0266-3538 | ||||||||||||
Official Date: | 22 March 2020 | ||||||||||||
Dates: |
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Volume: | 189 | ||||||||||||
Article Number: | 108031 | ||||||||||||
DOI: | 10.1016/j.compscitech.2020.108031 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Description: | European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 798225. |
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Date of first compliant deposit: | 5 February 2020 | ||||||||||||
Date of first compliant Open Access: | 24 January 2021 | ||||||||||||
RIOXX Funder/Project Grant: |
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