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Lee, Dong Woog
Interfacial Physics and Chemistry Laboratory
Research Interests
  • Bio/Bio-inspired adhesion and lubrication, friction of skin and sensory perception, wetting behavior of various surfaces, surface physics and chemistry of low-dimensional materials

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Intermolecular interactions of chitosan: Degree of acetylation and molecular weight

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dc.contributor.author Lim, Chanoong ko
dc.contributor.author Hwang, Dong Soo ko
dc.contributor.author Lee, Dong Woog ko
dc.date.available 2021-02-18T08:24:11Z -
dc.date.created 2021-02-13 ko
dc.date.issued 2021-05 ko
dc.identifier.citation CARBOHYDRATE POLYMERS, v.259, pp.117782 ko
dc.identifier.issn 0144-8617 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/49977 -
dc.description.abstract The degree of acetylation (DA), which determines as the molar proportion of N-acetyl-D-glucosamine units on chitosan, characterizes the physical, chemical, and biological properties of chitosan. Thus, DA can be a critical factor in the utilization of chitosan. Nevertheless, quantitative studies on the molecular interactions of chitosan as a function of DA are lacking. Here, we directly measured the molecular interaction (adhesion and cohesion) of molecularly thin chitosan films, dependent on the molecular weight and DA, using a surface forces apparatus. Using low molecular weight (LMW,-5 kDa) and high molecular weight (HMW,-135 kDa) chitosan, we obtained several DA ranges through a reacetylation method. The interactions of LMW chitosan were greatly influenced by the intrinsic charge of the chitosan units, whereas for HMW chitosan, chain flexibility was found to be the major factor affecting molecular interaction Taken together, our comprehensive data provides a holistic understanding of the interaction mechanism of chitosan. ko
dc.language 영어 ko
dc.publisher ELSEVIER SCI LTD ko
dc.title Intermolecular interactions of chitosan: Degree of acetylation and molecular weight ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85101835339 ko
dc.identifier.wosid 000632800700006 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.carbpol.2021.117782 ko
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S0144861721001697?via%3Dihub ko
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