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Facile Preparation of Biocompatible and Transparent Silica Aerogels as Ionogels Using Choline Dihydrogen Phosphate Ionic Liquid

Effect of Cellulose Characteristics on the Properties of the Wet-Spun Aerogel Fibers

Aachen-Maastricht Institute for Biobased Materials (AMIBM), Faculty of Science and Engineering, Maastricht University, 6167RD Geleen, The Netherlands
Department of Biohybrid and Medical Textiles (BioTex), AME-Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, 52074 Aachen, Germany
Author to whom correspondence should be addressed.
Academic Editor: Hajar Maleki
Appl. Sci. 2021, 11(4), 1525;
Received: 11 January 2021 / Revised: 27 January 2021 / Accepted: 4 February 2021 / Published: 8 February 2021
(This article belongs to the Special Issue Functional 3D Porous Nanostructured Materials-Aerogels)
Cellulose aerogels (CAs) from plant or bacterial-derived cellulose have advantages such as low density, high porosity, and high specific surface area and have been used in various applications including biomedical fields. One limiting factor in developing CAs is their demanding shaping process since it involves several steps of dissolution/dispersion of cellulose, geometry configurations using molds or nozzles, coagulation and washing of the gel body, and drying techniques. CA fibers can be converted into textiles and enhance the design ability, stiffness, and flexibility of the CAs. This study aims to understand the correlations between the initial cellulose characteristics, aerogel’s internal structure, and its prospective biomedical application. Wet-spun CA fibers were obtained by supercritical CO2 drying from low and high molecular weight microcrystalline cellulose in calcium thiocyanate tetrahydrate solution. Fiber spinning, thermal behavior, textural properties, and biological assessments of the CA fibers were inspected. The CA microfibers from high molecular weight cellulose proved to have a higher surface area (~197 m2/g), denser structure, and finer nanofibrils (~2 nm) with better thermal stability in comparison with the fibers produced from low molecular weight cellulose. The fibers were nontoxic, and cell proliferation was observed over time. CA fibers showed promising results to be used for biomedical applications such as tissue engineering and wound care. View Full-Text
Keywords: cellulose; aerogels; fibers; wet-spinning; supercritical CO2 drying cellulose; aerogels; fibers; wet-spinning; supercritical CO2 drying
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MDPI and ACS Style

Rostamitabar, M.; Seide, G.; Jockenhoevel, S.; Ghazanfari, S. Effect of Cellulose Characteristics on the Properties of the Wet-Spun Aerogel Fibers. Appl. Sci. 2021, 11, 1525.

AMA Style

Rostamitabar M, Seide G, Jockenhoevel S, Ghazanfari S. Effect of Cellulose Characteristics on the Properties of the Wet-Spun Aerogel Fibers. Applied Sciences. 2021; 11(4):1525.

Chicago/Turabian Style

Rostamitabar, Matin; Seide, Gunnar; Jockenhoevel, Stefan; Ghazanfari, Samaneh. 2021. "Effect of Cellulose Characteristics on the Properties of the Wet-Spun Aerogel Fibers" Appl. Sci. 11, no. 4: 1525.

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