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dc.contributor.authorZhang, Zhen
dc.contributor.authorJin, Fujun
dc.contributor.authorWu, Zicong
dc.contributor.authorJin, Ju
dc.contributor.authorLi, Feng
dc.contributor.authorWang, Yiliang
dc.contributor.authorWang, Zhiping
dc.contributor.authorTang, Shunqing
dc.contributor.authorWu, Chaoxi
dc.contributor.authorWang, Yifei
dc.date.accessioned2021-09-07T05:51:16Z
dc.date.available2021-09-07T05:51:16Z
dc.date.issued2017
dc.identifier.issn0144-8617
dc.identifier.doi10.1016/j.carbpol.2017.08.132
dc.identifier.urihttp://hdl.handle.net/10072/407714
dc.description.abstractChitosan nanofibers (CSNFs) have potential applications in biomaterials, oil recovery and food packaging, but their instability in moist environment has limited their full utilization. Here we report that CSNFs can be O-acylated in a post-electrospinning treatment by using pyridine as catalyst and short-chain (C2, C3, C4, C5 and C6) and long-chain (C8 and C12) fatty acid anhydrates as acylation agents. The effects of O-acylation to CSNFs were analyzed in detail. FT-IR, 1H NMR and elemental analysis indicated that the hydroxyl groups of chitosan in CSNFs were acylated in 2h. XRD spectra indicated that the O-acylation modification altered the crystal structure of the native fibers and the acyl substituents packed in a laterally aligned and layered structure. SEM examinations showed that the acylation modification could effectively control the fibrous structure of CSNFs and improve their stability in moist environment. The O-acylated CSNFs generally have an average diameter about 100nm except for laurelated CSNFs (∼200nm). Water contact angle measurement indicated that the wetting properties of O-acylated CSNFs were affected by the length of acyl side chains. This fiber acylation strategy can tune the material properties of CSNFs and expand their potential applications.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherElsevier
dc.relation.ispartofpagefrom203
dc.relation.ispartofpageto209
dc.relation.ispartofjournalCarbohydrate Polymers
dc.relation.ispartofvolume177
dc.subject.fieldofresearchMacromolecular and materials chemistry
dc.subject.fieldofresearchOrganic chemistry
dc.subject.fieldofresearchFood sciences
dc.subject.fieldofresearchcode3403
dc.subject.fieldofresearchcode3405
dc.subject.fieldofresearchcode3006
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsChemistry, Applied
dc.subject.keywordsPolymer Science
dc.titleO-acylation of chitosan nanofibers by short-chain and long-chain fatty acids
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationZhang, Z; Jin, F; Wu, Z; Jin, J; Li, F; Wang, Y; Wang, Z; Tang, S; Wu, C; Wang, Y, O-acylation of chitosan nanofibers by short-chain and long-chain fatty acids, Carbohydrate Polymers, 2017, 177, pp. 203-209
dcterms.dateAccepted2017-08-25
dc.date.updated2021-09-07T05:49:39Z
gro.hasfulltextNo Full Text
gro.griffith.authorJin, Ju


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