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  4. £]-Chitin nanofibrils for self-sustaining hydrogels preparation via hydrothermal treatment
 
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£]-Chitin nanofibrils for self-sustaining hydrogels preparation via hydrothermal treatment

Journal
Carbohydrate Polymers
Journal Volume
90
Journal Issue
4
Pages
1509-1514
Date Issued
2012
Author(s)
Nata I.F.
Wang S.S.-S.  
Wu T.-M.
Lee C.-K.
DOI
10.1016/j.carbpol.2012.07.022
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/406731
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865690917&doi=10.1016%2fj.carbpol.2012.07.022&partnerID=40&md5=c4e2ac8ed9ec22c0e2bf66aff6780c11
Abstract
A transparent nanofibril suspension could be readily obtained by treating purified squid pen powder in water with ultrasonic irradiation. The obtained suspension is consisted of £]-chitin nanofibrils (CNF) with 3-10 nm in width and several micrometers in length. The degree of acetylation (DA) of CNF was found to be 84% which is about 10% lower than that of untreated sample. The CNF suspension could be transformed into a durable 3-D hydrogels (CH) by simply heating to 180 ¢XC for 1-4 h in an autoclave. Hydrophobic interaction between CNF was believed to play the major role for CNF self-assembling into hydrogels, since the as-prepared chitin hydrogels readily dissolved in a typical chaotropic solution (8 M urea) under room temperature. The hydrothermal duration and CNF concentration (0.3-2% (w/v)) strongly affected the physical properties of CH. The suspension of 1% (w/v) CNF treated with 4 h, 180 ¢XC hydrothermal heating generated a CH with 99.3% water content, CNF with 87% crystallinity and an mechanical strength of 0.7 N breaking force. ? 2012 Elsevier Ltd. All rights reserved.
Subjects
£]-Chitin
Chitin nanofibrils
Hydrogels
Hydrothermal
Squid pen
Type
journal article

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