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Surface engineering of cellulose nanocrystals via SI-AGET ATRP of glycidyl methacrylate and ring-opening reaction for fabricating self-healing nanocomposite hydrogels

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Abstract

In this manuscript, self-healing nanocomposite hydrogels were successfully fabricated with nanocomposite materials based on functional cellulose nanocrystals (CNCs). CNCs were firstly extracted from microcrystalline cellulose by a typical and eco-friendly method with choline chloride and oxalic acid dihydrate as deep eutectic solvents. Well-defined poly(glycidyl methacrylate) (PGMA) was further grafted on the surface of CNCs by surface-initiated activator generated by electron transfer atom transfer radical polymerization. After ring-opening reaction of PGMA, CNCs@PGMA-OL nanocomposites with diol functional group were successfully obtained and further implanted into poly(acrylic acid)/guar gum-based self-healing hydrogels by multiple reversible weak interactions. These nanocomposite hydrogels display outstanding self-healing and mechanical strength properties, providing a facile strategy for the design and development CNC-based functional materials.

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Acknowledgments

The research was financial supported by the National Natural Science Foundation of China (Nos. 51773086 and 51973086), the Key Research and Development Program of Shandong Province (No. 2019GGX102012), the Project of Shandong Province Higher Educational Science (Nos. 2019KJA011 and J18KA080) and the Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology.

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Correspondence to Wenxiang Wang or Liangjiu Bai.

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Jiang, C., Fan, W., Zhang, N. et al. Surface engineering of cellulose nanocrystals via SI-AGET ATRP of glycidyl methacrylate and ring-opening reaction for fabricating self-healing nanocomposite hydrogels. Cellulose 28, 9785–9801 (2021). https://doi.org/10.1007/s10570-021-04170-5

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  • DOI: https://doi.org/10.1007/s10570-021-04170-5

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