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DC Field | Value | Language |
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dc.citation.endPage | 14229 | - |
dc.citation.number | 46 | - |
dc.citation.startPage | 14222 | - |
dc.citation.title | LANGMUIR | - |
dc.citation.volume | 29 | - |
dc.contributor.author | Lee, Dong Woog | - |
dc.contributor.author | Lim, Chanoong | - |
dc.contributor.author | Israelachvili, Jacob N. | - |
dc.contributor.author | Hwang, Dong Soo | - |
dc.date.accessioned | 2023-12-22T03:13:28Z | - |
dc.date.available | 2023-12-22T03:13:28Z | - |
dc.date.created | 2016-02-05 | - |
dc.date.issued | 2013-11 | - |
dc.description.abstract | Chitosan, a load-bearing biomacromolecule found in the exoskeletons of crustaceans and insects, is a promising biopolymer for the replacement of synthetic plastic compounds. Here, surface interactions mediated by chitosan in aqueous solutions, including the effects of pH and contact time, were investigated using a surface forces apparatus (SFA). Chitosan films showed an adhesion to mica for all tested pH ranges (3.0-8.5), achieving a maximum value at pH 3.0 after a contact time of 1 h (W-ad similar to 6.4 mJ/m(2)). We also found weak or no cohesion between two opposing chitosan layers on mica in aqueous buffer until the critical contact time for maximum adhesion (chitosan-mica) was reached. Strong cohesion (W-co similar to 8.5 mJ/m(2)) between the films was measured with increasing contact times up to 1 h at pH 3.0, which is equivalent to similar to 60% of the strongest, previously reported, mussel underwater adhesion. Such time-dependent adhesion properties are most likely related to molecular or molecular group reorientations and interdigitations. At high pH (8.5), the solubility of chitosan changes drastically, causing the chitosan-chitosan (cohesion) interaction to be repulsive at all separation distances and contact times. The strong contact time and pH-dependent chitosan-chitosan cohesion and adhesion properties provide new insight into the development of chitosan-based load-bearing materials. | - |
dc.identifier.bibliographicCitation | LANGMUIR, v.29, no.46, pp.14222 - 14229 | - |
dc.identifier.doi | 10.1021/la403124u | - |
dc.identifier.issn | 0743-7463 | - |
dc.identifier.scopusid | 2-s2.0-84888351915 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/18386 | - |
dc.identifier.url | http://pubs.acs.org/doi/abs/10.1021/la403124u | - |
dc.identifier.wosid | 000330144100028 | - |
dc.language | 한국어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Strong adhesion and cohesion of chitosan in aqueous solutions | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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