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

11 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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