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Facile preparation of eco-friendly, flexible starch-based materials with ionic conductivity and strain-responsiveness
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Liu, Peng, Ma, Cong, Li, Ying, Wang, Liming, Wei, Linjie, Yan, Yinlei and Xie, Fengwei (2020) Facile preparation of eco-friendly, flexible starch-based materials with ionic conductivity and strain-responsiveness. ACS Sustainable Chemistry & Engineering, 8 . pp. 19117-19128. 51. doi:10.1021/acssuschemeng.0c07473 ISSN 2168-0485.
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WRAP-Facile-preparation-eco-friendly-flexible-starch-materials-ionic-2020.pdf - Accepted Version - Requires a PDF viewer. Download (2271Kb) | Preview |
Official URL: http://dx.doi.org/10.1021/acssuschemeng.0c07473
Abstract
This work demonstrates a facile and “green” method to prepare eco-friendly, flexible, transparent, and ionically conductive starch-based materials, which have great potential for personal health-monitoring applications such as disposable electrodes. This method relies on the use of the CaCl2 solution and enables both the efficient disorganization and amorphization of high-amylose starch granules with low energy consumption and the reinforcement of the starch chain network by starch–metal cation complexation. Specifically, the method involves a simple mixing of a high-amylose starch with the CaCl2 solution followed by heating the mixture at 80 °C for 5 min. The whole process is completely environmentally benign, without any waste liquid or bioproducts generated. These resulting materials displayed tunable mechanical strength (500–1300 kPa), elongation at break (15–32%), Young’s modulus (4–9 MPa), toughness (0.05–0.26 MJ/m3), and suitable electrical resistivity (3.7–9.2 Ω·m). Moreover, the developed materials were responsive to external stimuli such as strain and liquids, satisfying the requirements for wearable sensor applications. Besides, composed of only starch, CaCl2, and water, the materials are much cheaper and eco-friendly (can be consumed by fish) compared with other polymer-based conductive hydrogels.
Item Type: | Journal Article | |||||||||||||||
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Subjects: | Q Science > QP Physiology T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology T Technology > TS Manufactures |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||||||||
Library of Congress Subject Headings (LCSH): | Starch , Starch industry, Composite materials -- Environmental aspects, Green products , Biopolymers | |||||||||||||||
Journal or Publication Title: | ACS Sustainable Chemistry & Engineering | |||||||||||||||
Publisher: | American Chemical Society | |||||||||||||||
ISSN: | 2168-0485 | |||||||||||||||
Official Date: | 18 December 2020 | |||||||||||||||
Dates: |
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Volume: | 8 | |||||||||||||||
Page Range: | pp. 19117-19128 | |||||||||||||||
Article Number: | 51 | |||||||||||||||
DOI: | 10.1021/acssuschemeng.0c07473 | |||||||||||||||
Status: | Peer Reviewed | |||||||||||||||
Publication Status: | Published | |||||||||||||||
Reuse Statement (publisher, data, author rights): | This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry & Engineering, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acssuschemeng.0c07473 | |||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||
Copyright Holders: | Copyright © 2020 American Chemical Society | |||||||||||||||
Date of first compliant deposit: | 22 December 2020 | |||||||||||||||
Date of first compliant Open Access: | 18 December 2021 | |||||||||||||||
RIOXX Funder/Project Grant: |
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