Comparison of Hydrogels Prepared with Ionic-Liquid-Isolated vs Commercial Chitin and Cellulose

Shen, Xiaoping; Shamshina, Julia L.; Berton, Paula; Bandomir, Jenny; Wang, Hui; Gurau, Gabriela; Rogers, Robin D.

doi:10.1021/acssuschemeng.5b01400

Title: Comparison of Hydrogels Prepared with Ionic-Liquid-Isolated vs Commercial Chitin and Cellulose

Journal Article · Tue Dec 15 00:00:00 EST 2015 · ACS Sustainable Chemistry & Engineering

DOI:https://doi.org/10.1021/acssuschemeng.5b01400· OSTI ID:1593135

Shen, Xiaoping ^[1]; Shamshina, Julia L. ^[2]; Berton, Paula ^[3]; Bandomir, Jenny ^[4]; Wang, Hui ^[4]; Gurau, Gabriela ^[5]; Rogers, Robin D. ^[3]

Univ. of Alabama, Tuscaloosa, AL (United States); Northeast Forestry Univ., Harbin (China)
525 Solutions, Inc., Tuscaloosa, AL (United States)
Univ. of Alabama, Tuscaloosa, AL (United States); McGill Univ., Montreal, QC (Canada)
Univ. of Alabama, Tuscaloosa, AL (United States)
525 Solutions, Inc., Tuscaloosa, AL (United States); McGill Univ., Montreal, QC (Canada)

Physical and/or covalently linked (chemical) hydrogels were prepared from chitin and cellulose extracted with ionic liquid from shrimp shells and wood biomass, respectively, and compared with hydrogels prepared from commercially available biopolymers, practical grade chitin, and microcrystalline cellulose. The highly porous aerogels were formed by initial dissolution of the biopolymers in NaOH/urea aqueous systems using freeze/thaw cycles, followed by thermal treatment (with or without epichlorohydrin as a cross-linker) and supercritical CO2 drying. The ionic-liquid-extracted cellulose pulp and chitin, as well as practical grade chitin could form both stable physical and chemical hydrogels, whereas biopolymers of lower apparent molecular weight such as microcrystalline cellulose required a covalent cross-linker for hydrogel formation and commercially available pure chitin was not suitable for the preparation of hydrogels of either type. Hydrogels prepared from the ionic-liquid- extracted biopolymers exhibited properties substantially different from those made from the commercially available biopolymers. Loading of an active ingredient into the hydrogel and its subsequent release was demonstrated using indigo carmine and revealed that the release rate was controlled mainly by the biopolymer concentration of the gel network.

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Research Organization:: Univ. of Alabama, Tuscaloosa, AL (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0010152

OSTI ID:: 1593135

Alternate ID(s):: OSTI ID: 1593136

Journal Information:: ACS Sustainable Chemistry & Engineering, Vol. 4, Issue 2; ISSN 2168-0485

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 74 works

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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Cellulose
Ionic liquid
Release
Hydrogel
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Chitin
Cellulose
Ionic liquid
Release

Title: Comparison of Hydrogels Prepared with Ionic-Liquid-Isolated vs Commercial Chitin and Cellulose

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