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Cellulose-starch hybrid films plasticized by aqueous ZnCl2 solution
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Shang, Xiaoqin, Jiang, Huihua, Wang, Qingling, Liu, Peng and Xie, Fengwei (2019) Cellulose-starch hybrid films plasticized by aqueous ZnCl2 solution. International Journal of Molecular Sciences, 20 (3). 474. doi:10.3390/ijms20030474 ISSN 1422-0067.
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WRAP-Cellulose-starch-hybrid-films-plasticized-Xie-2019.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2541Kb) | Preview |
Official URL: http://dx.doi.org/10.3390/ijms20030474
Abstract
Starch and cellulose are two typical natural polymers from plants that have similar chemical structures. The blending of these two biopolymers for materials development is an interesting topic, although how their molecular interactions could influence the conformation and properties of the resultant materials has not been studied extensively. Herein, the rheological properties of cellulose/starch/ZnCl2 solutions were studied, and the structures and properties of cellulose-starch hybrid films were characterized. The rheological study shows that compared with starch (containing mostly amylose), cellulose contributed more to the solution’s viscosity and has a stronger shear-thinning behavior. A comparison between the experimental and calculated zero-shear-rate viscosities indicates that compact complexes (interfacial interactions) formed between cellulose and starch with ≤50 wt % cellulose content, whereas a loose structure (phase separation) existed with ≥70 wt % cellulose content. For starch-rich hybrid films prepared by compression molding, less than 7 wt % of cellulose was found to improve the mechanical properties despite the reduced crystallinity of the starch; for cellulose-rich hybrid films, a higher content of starch reduced the material properties, although the chemical interactions were not apparently influenced. It is concluded that the mechanical properties of biopolymer films were mainly affected by the structural conformation, as indicated by the rheological results. View Full-Text
Item Type: | Journal Article | |||||||||||||||||||||
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Subjects: | Q Science > QD Chemistry | |||||||||||||||||||||
Divisions: | Other > Institute of Advanced Study Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) |
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Library of Congress Subject Headings (LCSH): | Starch, Cellulose, Polymers, Biopolymers | |||||||||||||||||||||
Journal or Publication Title: | International Journal of Molecular Sciences | |||||||||||||||||||||
Publisher: | M D P I AG | |||||||||||||||||||||
ISSN: | 1422-0067 | |||||||||||||||||||||
Official Date: | 22 January 2019 | |||||||||||||||||||||
Dates: |
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Volume: | 20 | |||||||||||||||||||||
Number: | 3 | |||||||||||||||||||||
Article Number: | 474 | |||||||||||||||||||||
DOI: | 10.3390/ijms20030474 | |||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||
Date of first compliant deposit: | 24 January 2019 | |||||||||||||||||||||
Date of first compliant Open Access: | 29 January 2019 | |||||||||||||||||||||
RIOXX Funder/Project Grant: |
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