Filling natural microtubules with triphenyl phosphate for flame-retarding polymer composites

Wu, H, Araby, S, Xu, J and Mouritz, A., et al, 2018, 'Filling natural microtubules with triphenyl phosphate for flame-retarding polymer composites', Composites Part A: Applied Science and Manufacturing, vol. 115, pp. 247-254.


Document type: Journal Article
Collection: Journal Articles

Title Filling natural microtubules with triphenyl phosphate for flame-retarding polymer composites
Author(s) Wu, H
Araby, S
Xu, J
Mouritz, A., et al,
Year 2018
Journal name Composites Part A: Applied Science and Manufacturing
Volume number 115
Start page 247
End page 254
Total pages 8
Publisher Pergamon Press
Abstract Phosphorus flame retardants can provide polymers with flame retardancy, but they often compromise the polymers mechanical performance due to plasticization. This problem is addressed in this study by filling and sealing triphenyl phosphate into natural microtubules of ∼100 µm in length, 1020 µm in diameter and 0.51.0 µm in wall thickness. We investigated the sealing mechanisms through morphological observation and X-ray photoelectron spectroscopy. An appropriate mixture of triphenyl phosphate and cellulose acetate at mass ratio of 97:3 created an encapsulation effect which prevented triphenyl phosphate from flowing out of the tubules during curing, which resulted in an encapsulation ratio of 56%. Adding the filled tubules into an epoxy resin showed no obvious compromise on the stiffness and strength of the matrix. The tubules proved effective in increasing char and reducing smoke release during combustion. This self-sealing method may be used in other applications such as self-healing composites.
Subject Composite and Hybrid Materials
Keyword(s) Flame retardant
Epoxy
Kapok microtubules
Triphenyl phosphate
Cellulose acetate
DOI - identifier 10.1016/j.compositesa.2018.09.030
Copyright notice © 2018 Published by Elsevier Ltd.
ISSN 1359-835X
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