Radiation-​grafting of flame retardants on flax fabrics - A comparison between different flame retardant structures

Teixeira Marie, Sonnier Rodolphe, Otazaghine Belkacem, Ferry Laurent, Melanie Aubert, Teija Tirri, Carl-Eric Wilen, Rouif Sophie

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

Three unsatd. compds. bearing resp. phosphate, aryl bromide and sulfenamide moieties were used as flame retardants (FR) for flax fabrics.  Due to the presence of carbon-​carbon double bonds, radiation-​grafting was considered to covalently bond these FR onto fiber structure.  Grafting efficiency and location of FR mols. were investigated by wt. measurements and SEM-​EDX observations.  Flammability and esp. self-​extinguishment were assessed by thermogravimetric anal., pyrolysis-​combustion flow calorimetry and a non-​standardized fire test already used in previous studies.  All FRs were able to diffuse into elementary fiber bulk.  Nevertheless only the phosphonated monomer (noted FR-​P) was significantly grafted onto flax.  Self-​extinguishment was obtained for fabrics contg. at least around 0.5 wt​% of phosphorus.  On the contrary the FR content of flax fibers after radiation-​grafting procedure and washing was negligible for FR-​S and FR-​Br, evidencing that these mols. have not been grafted upon irradn.  Moreover, the combination of these mols. prevents the radiation-​grafting of other mols. which showed good grafting rate when used alone.

Original languageUndefined/Unknown
Pages (from-to)135–142
JournalRadiation Physics and Chemistry
Volume145
DOIs
Publication statusPublished - 2018
MoE publication typeA1 Journal article-refereed

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