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Glycerol plasticised chitosan : a study of biodegradation via carbon dioxide evolution and nuclear magnetic resonance
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Dean, Katherine, Sangwan, Parveen, Way, Cameron, Zhang, Xiaoqing, Martino, Verónica P., Xie, Fengwei, Halley, Peter J., Pollet, Eric and Avérous, Luc (2013) Glycerol plasticised chitosan : a study of biodegradation via carbon dioxide evolution and nuclear magnetic resonance. Polymer Degradation and Stability, 98 (6). pp. 1236-1246. doi:10.1016/j.polymdegradstab.2013.03.004
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WRAP-glycerol-plasticised-chitosan-carbon-dioxide-nuclear-Xie-2013.pdf - Accepted Version - Requires a PDF viewer. Download (5Mb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.polymdegradstab.2013.0...
Abstract
The biodegradation of neat chitosan, glycerol plasticised chitosan films and their corresponding clay-based nano-biocomposites has been studied in simulated aerobic soil and composting environments using a respirometric method. The rate of biodegradation was much faster in soil and all test samples achieved close to 100% biodegradation within 70 days. During biodegradation under aerobic composting conditions the neat chitosan samples achieved approx 65% biodegradation and the plasticised chitosan samples achieved >85% biodegradation within 180 days. Additionally, nano-clay additives had no significant effect on the overall biodegradability of the chitosan-based materials during composting. High-resolution solid-state NMR studies were performed to examine the chemical structures of the plasticized chitosan and their nano-biocomposites. NMR studies indicated that the glycerol plasticizer was extracted into wet compost within first few days while acetic acid remained through strong hydrogen bonding with chitosan during the degradation process.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | T Technology > TP Chemical technology | ||||||||||
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||
| Library of Congress Subject Headings (LCSH): | Chitosan -- Biodegradation, Compost | ||||||||||
| Journal or Publication Title: | Polymer Degradation and Stability | ||||||||||
| Publisher: | Elsevier | ||||||||||
| ISSN: | 0141-3910 | ||||||||||
| Official Date: | June 2013 | ||||||||||
| Dates: |
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| Volume: | 98 | ||||||||||
| Number: | 6 | ||||||||||
| Page Range: | pp. 1236-1246 | ||||||||||
| DOI: | 10.1016/j.polymdegradstab.2013.03.004 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access |
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