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Published in: Cellulose 16/2021

22-09-2021 | Original Research

Facile microwave assisted flame retardant treatment for cotton fabric using a biobased industrial byproduct: phytic acid

Authors: Shiran Yu, Zhiyu Xia, Weeradech Kiratitanavit, Sourabh Kulkarni, Jayant Kumar, Ravi Mosurkal, Ramaswamy Nagarajan

Published in: Cellulose | Issue 16/2021

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Abstract

A single-step, solvent-free microwave-assisted technique for flame retardant (FR) cotton fabric using a bio-based FR agent, phytic acid is presented. The effects of microwave power and irradiation time on FR characteristics of cotton are investigated. Self-extinguishing cotton fabric with char length of 79 mm and no afterflame is achieved within 4 min of 600 W microwave irradiation whereas a treatment time of as long as 45 min is needed in conventional heating method to achieve the same level of weight add-on or FR performance. The cotton fabric treated with phytic acid in the microwave also exhibits 90% retention of tear strength. Comprehensive characterization of the phytic acid treated cotton fabric using scanning electron microscope (SEM), elemental analysis, thermal gravimetric analysis (TGA), and microscale combustion calorimetry (MCC) correlated with reaction condition allowed the formulation of generalized guidelines applicable for microwave assisted cellulose phosphorylation. The FR mechanism study shows that phytic acid is covalently attached to cellulose and as an acid source, contributes to intumescent char formation during combustion.

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Appendix
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Metadata
Title
Facile microwave assisted flame retardant treatment for cotton fabric using a biobased industrial byproduct: phytic acid
Authors
Shiran Yu
Zhiyu Xia
Weeradech Kiratitanavit
Sourabh Kulkarni
Jayant Kumar
Ravi Mosurkal
Ramaswamy Nagarajan
Publication date
22-09-2021
Publisher
Springer Netherlands
Published in
Cellulose / Issue 16/2021
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-04191-0

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