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Cellulose
Published in: Cellulose 9/2019

08-05-2019 | Original Research

Significantly improved flame-retardancy of cellulose acetate nanofiber by Mg-based nano flaky petal

Authors: Lang Jiang, Ke Li, Huiyu Yang, Xin Liu, Weilin Xu, Bo Deng

Published in: Cellulose | Issue 9/2019

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Abstract

Flower-shaped hydromagnesite (MgO-P) and magnesium oxide (MgO) micro spheres were synthesized via precipitation-aging method with and without calcination. The disassociated nano flaky petal of around 50 nm (~ 20 nm in thickness) of MgO-P and MgO by sonication were used as flame-retardants for the electrospun cellulose acetate (CA)/MgO-P or CA/MgO nanofiber. SEM, XRD, FTIR, HRTEM were used to characterize all related products. TGA was used to analyze the detailed decomposition procedures of bare, MgO-P, and MgO doped CA nanofiber. Three evaluation methods including broken time after heating, thermography during heating, and combustion observation were adopted to compare the flame-retardancy of composited nanofibers. Doped CA nanofibers showed best flame-retardancy by extending the heat-induced broken time from 0.46 to 12.09 s, which is 26.3 times that of CA nanofiber. The flame of CA/MgO-P and CA/MgO could be self-extinguished once the ignition source was removed. No smoke and size shrinkage could be observed during the combustion of CA/MgO-P or CA/MgO nanofibers. Corresponding flame-retarding mechanism of Mg-based nano flaky petal was proposed.
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Metadata
Title
Significantly improved flame-retardancy of cellulose acetate nanofiber by Mg-based nano flaky petal
Authors
Lang Jiang
Ke Li
Huiyu Yang
Xin Liu
Weilin Xu
Bo Deng
Publication date
08-05-2019
Publisher
Springer Netherlands
Published in
Cellulose / Issue 9/2019
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-019-02451-8

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