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Study on Preparation and Preservation Application of Packaging Paper Synergistically Modified with Poly(ionic liquid) and Anthocyanins
Received:November 18, 2025  Revised:December 07, 2025
DOI：10.11981/j.issn.1000-6842.2026.03.109
Key Words:rice straw;poly(ionic liquid);anthocyanins;reverisible addition-fragmentation chain transfer polymerization;preservation packaging
Author NameAffiliationPostcode
Jin Panle* 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
Li Zhiqiang 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
Yang Miaoxiu 2China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102 100102
Huang Ju 2China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102 100102
Chen Xi 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
Niu Wenqian 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
Zang Kexuan 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
Yang Menghao 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
Qian Liwei* 1College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
Song Wenqi* 3School of Electronic Information， Xijing University， Xi’an， Shaanxi Province， 710123 710123
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Abstract:
      In this study， rice straw pulp paper was used as the substrate material. Through radical graft polymerization， histidine-functionalized imidazolium ionic liquid （[Im][His]） was stably immobilized onto the cellulose framework of rice straw pulp paper to form a poly（ionic liquid） （PIL） functional layer. Then the blueberry anthocyanins （BA） were subsequently introduced to construct a synergistic antioxidant interface， resulting in PIL/BA-modified rice straw pulp paper （OPC@PB）. The results showed that when the mass ratio of [Im][His] and rice straw pulp paper was 1∶1， the prepared OPC@P2B （grafting degree of 27.6%） exhibited excellent oxygen and water vapor barrier properties （oxygen transmission rate reduced more than 50% to 4.10 cm³/(m²·d)）， and significantly enhanced free radical scavenging capacity （increased from less than 5% of rice straw pulp paper to about 90%）， indicating that the PIL-polyphenol system can achieve synergistic antioxidant effects via the “electron transfer-hydrogen donation-metal chelation” pathway. When OPC@P2B was used in chicken meat preservation packaging at 25 ℃， it effectively suppressed the accumulation of total volatile basic nitrogen and thiobarbituric acid compounds within 12 h， significantly slowed the rise in surface pH value of the chicken meat， and effectively extended chicken shelf life.
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