文献类型：期刊文献

英文题名：Temperature-responsive hydrogel prepared from N-vinyl-ε-caprolactam Pickering emulsions stabilized by cationic cellulose nanocrystals for preservative delivery in food packaging

作者：Wang, Jin[1] Liu, He[1] Xu, Xu[2] Guo, Lizhen[1] Wang, Dan[1] Shang, Shibin[1] Song, Zhanqian[1]

第一作者：王婧

通信作者：Guo, LZ[1];Xu, X[2]

机构：[1]Chinese Acad Forestry, Natl Forestry & Grassland Adm, Key Lab Chem Engn Forest Prod, Inst Chem Ind Forest Prod,Key Lab Biomass Energy &, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China

年份：2025

卷号：309

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20251518201520);Scopus(收录号：2-s2.0-105002038464);WOS:【SCI-EXPANDED(收录号:WOS:001468912100001)】；

基金：This work was supported by the Forestry Science and Technology Innovation and Extension Project of Jiangsu Province (No. LYKJ [2021] 04) .

语种：英文

外文关键词：Temperature responsive hydrogel; Cationic cellulose nanocrystals; Pickering emulsion; Controlled release; Emerging food packaging

摘要：Hydrogels show potential for application in the anti-corrosion of food preservation packaging. However, hydrogels capable of modulating the release rate kinetics of preservatives under elevated temperature conditions for food preservation packaging remain underexplored. Herein, cationic cellulose nanocrystals (AH-CNCs) were employed as emulsifiers to stabilize N-vinyl-epsilon-caprolactam (NVCL) and the temperature-responsive hydrogel was fabricated via free radical polymerization. This novel hydrogel enables control the release rate of preservatives by adjusting the addition amount of AH-CNCs under conditions exceeding the lower critical solution temperature (LCST). Below the LCST, increasing AH-CNC contents systematically enhance the swelling rate, concurrently reducing pore size and augmenting the structural stability of the hydrogel matrix. Upon surpassing the LCST, the release rate of preservative salicylaldehyde (SA) can be controlled by tuning the AH-CNCs contents and leveraging electrostatic adsorption between AH-CNCs with positive properties and negatively charged SA. Notably, fruit visualization assays validated that the temperature-responsive hydrogel matrix effectively extends the shelf life of fruits via dual-mode preservative delivery. Consequently, this temperature-responsive hydrogel demonstrates significant potential for practical implementation in smart food preservation packaging applications.