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HomeKey Engineering MaterialsKey Engineering Materials Vol. 792Oxidized Cellulose Nanofiber for Hemostatic...

Oxidized Cellulose Nanofiber for Hemostatic Materials

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Abstract:

In this study, oxidized cellulose nanofiber was prepared from squeeze dried Nata de Coco sheet by the oxidation system of HNO₃/H₃PO₄-NaNO₂at 30 °C for 24 hours. The ratio between HNO₃ and H₃PO₄ was 1:3 v/v and the concentration of NaNO₂ was 1.4% w/v. The carboxyl content and %yield of oxidized cellulose nanofiber from Nata de Coco (Nata-OC) was 28.6% and 68.4%, respectively. Then the Nata-OC was treated by several types of bases. Sodium hydroxide (NaOH) or triethanolamine (TEA) treated Nata-OC showed superior in gelation property to the original Nata-OC. The powder of base-treated Nata-OC gave stable Nata-OC aqueous dispersion, which might be applicable for spray-typed materials. The test papers obtained from 10% of base-treated Nata-OC dispersion showed good blood agglutinating property as same as dry sheet of pure Nata-OC. Moreover, the dispersion of base-treated Nata-OC could be coated on the surface of gauze without any additive.

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Engineering and Innovative Materials VII

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Periodical:

Key Engineering Materials (Volume 792)

Pages:

80-85

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.792.80

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Online since:

December 2018

Authors:

Supitcha Rungrodnimitchai*, Sirinapa Mayod, Suphatra Hiranphinyophat, Ditpon Kotatha, Chittra Dokbua

Keywords:

Base Treatment, Dispersion, Gelation, Hemostatic Materials, Nanofiber, Nata De Coco, Oxidized Cellulose, Sodium Hydroxide, Triethanolamine (TEA)

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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