The Library
Starch-zinc complex and its reinforcement effect on starch-based materials
Tools
Liu, Peng, Li, Ying, Shang, Xiaoqin and Xie, Fengwei (2019) Starch-zinc complex and its reinforcement effect on starch-based materials. Carbohydrate Polymers, 206 . pp. 528-538. doi:10.1016/j.carbpol.2018.11.034 ISSN 0144-8617.
|
PDF
WRAP-Starch–zinc-complex-reinforcement-effect-starch-based-materials-Xie-2019.pdf - Accepted Version - Requires a PDF viewer. Download (2178Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.carbpol.2018.11.034
Abstract
In this work, we found that ZnCl2 solution can not only be used as a plasticizer for starch but also provide a mechanical reinforcement effect to the resultant starch-based materials. By a one-step compression molding process, well-plasticized starch-based films could be obtained at 120 °C with a 15 wt.% ZnCl2 solution. Both the tensile strength and elongation at break of the films increased with a rise in ZnCl2 concentration, which demonstrates a mechanical reinforcement. This reinforcement could be mainly ascribed to the in-situ formed starch-zinc complexes and the enhanced starch molecular interactions. Moreover, if the processing method was changed into firstly mixing followed by compression molding, the tensile strength increased by more than three folds at no cost of the elongation at break. Regarding this, we propose that shear could further enhance the molecular interactions within the material. However, if the ZnCl2 concentration was too high, the mechanical properties were then reduced irrespective of the processing protocol, which could be due to the weakened molecular interactions by ZnCl2. Thus, we have demonstrated a new, simple method for preparing starch-based composite materials with enhanced mechanical properties, which could be potentially applied to many fields such as packaging, coating and biomedical materials.
Item Type: | Journal Article | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
|||||||||||||||||||||
Divisions: | Other > Institute of Advanced Study Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) |
|||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Plasticizers, Composite materials | |||||||||||||||||||||
Journal or Publication Title: | Carbohydrate Polymers | |||||||||||||||||||||
Publisher: | Pergamon Press | |||||||||||||||||||||
ISSN: | 0144-8617 | |||||||||||||||||||||
Official Date: | 15 February 2019 | |||||||||||||||||||||
Dates: |
|
|||||||||||||||||||||
Volume: | 206 | |||||||||||||||||||||
Page Range: | pp. 528-538 | |||||||||||||||||||||
DOI: | 10.1016/j.carbpol.2018.11.034 | |||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||
Date of first compliant deposit: | 28 November 2018 | |||||||||||||||||||||
Date of first compliant Open Access: | 14 November 2019 | |||||||||||||||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year