| Self-repairing oxetane-substituted chitosan polyurethane networks. | |
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MedLine Citation:
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PMID: 19286550 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Polyurethanes have many properties that qualify them as high-performance polymeric materials, but they still suffer from mechanical damage. We report the development of polyurethane networks that exhibit self-repairing characteristics upon exposure to ultraviolet light. The network consists of an oxetane-substituted chitosan precursor incorporated into a two-component polyurethane. Upon mechanical damage of the network, four-member oxetane rings open to create two reactive ends. When exposed to ultraviolet light, chitosan chain scission occurs, which forms crosslinks with the reactive oxetane ends, thus repairing the network. These materials are capable of repairing themselves in less than an hour and can be used in many coatings applications, ranging from transportation to packaging or fashion and biomedical industries. |
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Authors:
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Biswajit Ghosh; Marek W Urban |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 323 ISSN: 1095-9203 ISO Abbreviation: Science Publication Date: 2009 Mar |
Date Detail:
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Created Date: 2009-03-16 Completed Date: 2009-04-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: United States |
Other Details:
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Languages: eng Pagination: 1458-60 Citation Subset: IM |
Affiliation:
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School of Polymers and High Performance Materials, Shelby F. Thames Polymer Science Research Center, University of Southern Mississippi, Hattiesburg, MS 39406, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Chitosan
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chemistry* Ethers, Cyclic / chemistry* Molecular Structure Polyurethanes / chemistry* Ultraviolet Rays* |
| Chemical | |
Reg. No./Substance:
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0/Ethers, Cyclic; 0/Polyurethanes; 503-30-0/oxetane; 9012-76-4/Chitosan |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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