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Understanding the effects of montmorillonite and sepiolite on the properties of solution‐cast chitosan and chitosan/silk peptide composite films
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Chen, Pei, Xie, Fengwei and McNally, Tony (2021) Understanding the effects of montmorillonite and sepiolite on the properties of solution‐cast chitosan and chitosan/silk peptide composite films. Polymer International, 70 (5). pp. 527-535. doi:10.1002/pi.6103 ISSN 0959-8103.
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Official URL: https://doi.org/10.1002/pi.6103
Abstract
Blending with another biopolymer or nanomaterial can be an effective route to modify or tailor the properties of chitosan materials. In this work, we compared the effects of two nanoclays, montmorillonite (MMT) and sepiolite (SPT), on the properties of chitosan and chitosan/silk peptide (SP) films. While the solution‐cast chitosan/SP films showed no phase separation on the micron length scale, some degree of molecular‐level heterogeneity or incompatibility was evident. MMT nanoplatelets were delaminated in the chitosan‐alone matrix, resulting in enhanced mechanical properties and hydrophobicity. In comparison, inclusion of SPT nanoneedles was less effective at altering the properties of the chitosan matrix. In the chitosan/SP system, the MMT was poorly dispersed, suggesting the two biopolymers interfere with how each interacts with the nanoclay. Nonetheless, in this case, MMT disrupted biopolymer chain interactions, leading to reduced mechanical properties and increased surface hydrophilicity. In contrast, SPT was found to enhance the mechanical properties of the chitosan/SP matrix, certainly associated with it being better dispersed. Thus, this work shows the efficacy of MMT and SPT as a route to altering the structure and properties of chitosan‐based biopolymer matrices.
| Item Type: | Journal Article | |||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | |||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
| SWORD Depositor: | Library Publications Router | |||||||||
| Library of Congress Subject Headings (LCSH): | Polymers -- Mechanical properties, Nanocomposites (Materials), Chitosan | |||||||||
| Journal or Publication Title: | Polymer International | |||||||||
| Publisher: | John Wiley & Sons Ltd. | |||||||||
| ISSN: | 0959-8103 | |||||||||
| Official Date: | May 2021 | |||||||||
| Dates: |
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| Volume: | 70 | |||||||||
| Number: | 5 | |||||||||
| Page Range: | pp. 527-535 | |||||||||
| DOI: | 10.1002/pi.6103 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Reuse Statement (publisher, data, author rights): | "This is the peer reviewed version of the following article: Chen, P., Xie, F. and McNally, T. (2020), Understanding the effects of montmorillonite and sepiolite on the properties of solution‐cast chitosan and chitosan/silk peptide composite films.. Polym Int. Accepted Author Manuscript. doi:10.1002/pi.6103 which has been published in final form at https://doi.org/10.1002/pi.6103. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions." | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Date of first compliant deposit: | 8 September 2020 | |||||||||
| Date of first compliant Open Access: | 12 April 2021 | |||||||||
| RIOXX Funder/Project Grant: |
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| Is Part Of: | 1 | |||||||||
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