Multi-response cellulose nanocrystals-composite film and preparation method thereof
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United States of America Patent
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Aug 23, 2022
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Dec 16, 2021
filing date -
Oct 15, 2020
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Abstract
The disclosure discloses a multi-response cellulose nanocrystals-composite film and a preparation method thereof, belonging to the technical field of functional materials. The multi-response cellulose nanocrystals-composite film of the disclosure includes cellulose nanocrystals, a deep eutectic solvent and anthocyanins. The deep eutectic solvent is composed of choline chloride and biological sugar. A mass ratio of the choline chloride to the biological sugar is 1-20:1-6. A mass ratio of the cellulose nanocrystals to the deep eutectic solvent to the anthocyanins is 10:0-10:1, and the amount of the deep eutectic solvent is not 0. The preparation method of the composite film of the disclosure is simple and easy to operate, and has the advantages of mild conditions and short time consumption. The multi-response film prepared in the disclosure has humidity and pH detection functions, has the advantages of good flexibility, good reversibility, excellent stability, etc., and can be used as a flexible humidity and pH sensor.
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