Ionic liquid treated cellulose-based intelligent pH-responsive color indicator film, with excellent anti-ultraviolet function

Three instant pH-responsive intelligent chromogenic indicator films were fabricated by ionic liquid regenerated cellulose and introduction of shikonin with solution-casting method. The sensitive color change of the indicator film from reddish purple to light bluish purple could be observed in three...

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Published in:Journal of polymer research 2023-09, Vol.30 (9), Article 343
Main Authors: An, Nan, Hu, Jingwan, Ding, Yun, Sheng, Pinghou, Zhang, Zhicheng, Guo, Xiangrui
Format: Article
Language:English
Subjects:
Cellulose
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Color
Discoloration
Food packaging
Founding
Free radicals
Freshness
Hemp
Hydrogen-ion concentration
Industrial Chemistry/Chemical Engineering
Ionic liquids
Original Paper
Polymer Sciences
Scavenging
Shrimps
Stimuli
Thermal stability
Ultraviolet radiation
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cited_by cdi_FETCH-LOGICAL-c358t-f8eadb8972ef8ba74acce1f6c8645d2fc0c44304722eee26c3252fc7a1dd4bb63
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container_issue 9
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container_title Journal of polymer research
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creator An, Nan
Hu, Jingwan
Ding, Yun
Sheng, Pinghou
Zhang, Zhicheng
Guo, Xiangrui
description Three instant pH-responsive intelligent chromogenic indicator films were fabricated by ionic liquid regenerated cellulose and introduction of shikonin with solution-casting method. The sensitive color change of the indicator film from reddish purple to light bluish purple could be observed in three cellulose-based films as the pH increased. Furthermore, the stimuli-responsive color change of hemp/shikonin film is more pronounced in the narrow region from pH 5.5 to 8.5. During real-time monitoring of shrimp freshness, the utilization of hemp/shikonin indicator film revealed a highly responsive alteration in discoloration from shrimp fresh (pH = 6.7) to spoiled (pH = 7.2), without noticeable change on the appearance of the shrimp visually. Besides, the shikonin-added indicator film exhibited notable UV-light barrier property and free radical scavenging activity, as well as greater thermal stability and mechanical strength. Due to its versatility and pH stimuli-responsive color changing, this novel indicator film has great application potential in smart food packaging.
doi_str_mv 10.1007/s10965-023-03716-4
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subjects Cellulose
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Color
Discoloration
Food packaging
Founding
Free radicals
Freshness
Hemp
Hydrogen-ion concentration
Industrial Chemistry/Chemical Engineering
Ionic liquids
Original Paper
Polymer Sciences
Scavenging
Shrimps
Stimuli
Thermal stability
Ultraviolet radiation
title Ionic liquid treated cellulose-based intelligent pH-responsive color indicator film, with excellent anti-ultraviolet function
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