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

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Marie Teixeiraa, Rodolphe Sonniera, Belkacem Otazaghinea, Laurent Ferry, Mélanie Aubertb, TeijaTirrib, Carl-Eric Wilén, Sophie Rouifc
Förläggare: PERGAMON-ELSEVIER SCIENCE LTD
Publiceringsår: 2018
Tidskrift: Radiation Physics and Chemistry
Tidskriftsakronym: RADIAT PHYS CHEM
Volym: 145
Artikelns första sida, sidnummer: 135
Artikelns sista sida, sidnummer: 142
Antal sidor: 8
ISSN: 0969-806X


Abstrakt

Three unsaturated compounds bearing respectively 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 molecules were investigated by weight measurements and SEM-EDX observations. Flammability and especially self-extinguishment were assessed by thermogravimetric analysis, 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 containing 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 molecules have not been grafted upon irradiation. Moreover, the combination of these molecules prevents the radiation-grafting of other molecules which showed good grafting rate when used alone.


Nyckelord

Flame retardancy, Flax fibers, Radiation-grafting

Senast uppdaterad 2019-17-11 vid 04:27