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Characterization of blended cellulose/biopolymer films prepared using ionic liquid

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Abstract

Owing to their inherent biocompatibility and biodegradability, biopolymer-based materials are a good replacement for synthetic materials. We prepared cellulose-based films blended with various biopolymers by co-dissolution in 1-ethyl-3-methylimidazolium acetate followed by regeneration in ethanol. Cellulose was blended with bacterial cellulose, β-cyclodextrin, dextran, starch, agarose, agar, arabic gum, κ-carrageenan, chitosan, tragacanth gum, xanthan gum, xylan, lignin, gelatin, collagen, and silk. Physicochemical properties including surface morphology, thermal properties, optical properties, and hydrophilicity/hydrophobicity of the blended films were highly dependent on the biopolymer types. The altered properties of the blended films influenced the adsorption capacity for dyes and proteins and cytotoxicity. The adsorption capacity of a cellulose/chitosan film for methyl orange was 9.1-fold higher, that of a cellulose/silk film for crystal violet was 7.9-fold higher, and that of a cellulose/chitosan film for lysozyme was 7.9-fold higher than that of cellulose film. Gelatin as a blending biopolymer most efficiently enhanced cell viability.

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Acknowledgments

This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education [grant number: 2018R1D1A1B07050163], and by the Technology Development Program to Solve Climate Changes of the NRF, funded by the Ministry of Science and ICT [grant numbers: 2017M1A2A2087627 and 2017M1A2A2087647]. This work was also supported by research grant from the Ministry of Trade, Industry and Energy through the Korean Evaluation Institute of Industrial Technology [grant number: 20002810].

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Correspondence to Sang Hyun Lee.

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Park, S., Oh, Y., Yun, J. et al. Characterization of blended cellulose/biopolymer films prepared using ionic liquid. Cellulose 27, 5101–5119 (2020). https://doi.org/10.1007/s10570-020-03152-3

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  • DOI: https://doi.org/10.1007/s10570-020-03152-3

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