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Cellulose

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28.09.2019 | Original Research

Strengthened cellulosic gels by the chemical gelation of cellulose via crosslinking with TEOS

verfasst von: Lili Zhang, Qing Zhang, Juan Yu, Jinxia Ma, Zhiguo Wang, Yimin Fan, Shigenori Kuga

Erschienen in: Cellulose | Ausgabe 18/2019

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Abstract

Physical and chemical gels of cellulose were obtained by (1) coagulation of dimethyl sulfoxide (LiCl/DMSO) cellulose solution in ethanol and (2) crosslinking by tetraethyl orthosilicate (TEOS) in non-aqueous medium under catalysis with ethylenediamine (EDA). Their structure and properties were studied. The highest storage modulus was 1.08 MPa (physical) and 4.04 MPa (chemical), respectively. The surface area (S_BET) of cellulose chemical gels, which were composed of three-dimensional networks of long silica-modified fibrils, was as high as 296.8 m²/g. It is noticeable that it is not simple self-condensation of organic silicate that occurred but instead the ostensive silicic ester of cellulose was formed. This novel cellulose derivative and its chemical gelation may lead to a new category of cellulose-based organic–inorganic hybrid materials.

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Vorheriger Artikel Production of hydroxyapatite–bacterial cellulose composite scaffolds with enhanced pore diameters for bone tissue engineering applications

Nächster Artikel Effect of softening treatments on the properties of high-density cylindrical luffa as potential mattress cushioning material

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Titel: Strengthened cellulosic gels by the chemical gelation of cellulose via crosslinking with TEOS
verfasst von: Lili Zhang
Qing Zhang
Juan Yu
Jinxia Ma
Zhiguo Wang
Yimin Fan
Shigenori Kuga
Publikationsdatum: 28.09.2019
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 18/2019
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-019-02765-7

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Abstract

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