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Dissolution of starch with aqueous ionic liquid under ambient conditions
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Zhang, Binjia, Xie, Fengwei, Shamshina, Julia L., Rogers, Robin D., McNally, Tony, Halley, Peter J., Truss, Rowan W., Cheng, Ling and Zhao, Si-ming (2017) Dissolution of starch with aqueous ionic liquid under ambient conditions. ACS Sustainable Chemistry & Engineering, 5 (5). pp. 3737-3741. doi:10.1021/acssuschemeng.7b00784 ISSN 2168-0485.
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Official URL: http://dx.doi.org/10.1021/acssuschemeng.7b00784
Abstract
With increased awareness of global sustainability, there has been growing interest in the preparation of materials from natural, eco-friendly polymers (i.e., biopolymers). Nonetheless, despite their enormous application potential, biopolymers (starch, etc.) have a native semicrystalline structure with strong hydrogen bonding, and require use of solvents to improve their processability. However, the dissolution/processing of natural biopolymers such as starch often requires heating and thus significant energy input. Herein, we report an aqueous ionic liquid for fast and facile dissolution of starch, a typical semicrystalline natural polymer, under ambient conditions. The ionic liquid used is 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]). In particular, it is revealed that 0.15:1 mol/mol [C2mim][OAc]:water mixture disintegrates the sophisticated granule structure of native starch without apparently decreasing the molecular mass within 1 h at room temperature (i.e., 28 °C). In addition, this process did not result in any undesired derivatization. The discovery of this phenomenon could provide guidance for rationally designing “green” processes for chemical and biological engineering for the utilization of promising natural biopolymers.
Item Type: | Journal Article | ||||||||||
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Subjects: | T Technology > TP Chemical technology | ||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||||
Library of Congress Subject Headings (LCSH): | Biopolymers, Starch | ||||||||||
Journal or Publication Title: | ACS Sustainable Chemistry & Engineering | ||||||||||
Publisher: | American Chemical Society | ||||||||||
ISSN: | 2168-0485 | ||||||||||
Official Date: | 9 April 2017 | ||||||||||
Dates: |
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Volume: | 5 | ||||||||||
Number: | 5 | ||||||||||
Page Range: | pp. 3737-3741 | ||||||||||
DOI: | 10.1021/acssuschemeng.7b00784 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Date of first compliant deposit: | 11 April 2017 | ||||||||||
Date of first compliant Open Access: | 9 April 2018 | ||||||||||
Funder: | Australian Research Council (ARC), Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), Canada Excellence Research Chairs (CERC) Program | ||||||||||
Grant number: | 120100344, (2016CFB142 |
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