Layer-by-layer assembly of halogen-free polymeric materials on nylon/cotton blend for flame retardant applications

SUMMARY Thin films of environmentally safe, halogen free, anionic sodium phosphate and cationic polysiloxanes were deposited on a Nyco (1:1 nylon/cotton blend) fabric via layer‐by‐layer (LbL) assembly to reduce the inherent flammability of Nyco fabric. In the coating process, we used three different...

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Published in:Fire and materials 2016-03, Vol.40 (2), p.206-218
Main Authors: Narkhede, Mahesh, Thota, Sammaiah, Mosurkal, Ravi, Muller, Wayne S., Kumar, Jayant
Format: Article
Language:English
Subjects:
Blends
Coating
Combustion
Fabrics
flame retardant
layer-by-layer coating
nylon/cotton blends
Nylons
Oligomers
phosphates
Polysiloxanes
Textile composites
water soluble polysiloxanes
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cited_by cdi_FETCH-LOGICAL-c3970-d7026ee45fb784a5946957c6eacbf6cff4a8cc508dbb2a81d39cea596f58909b3
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container_end_page 218
container_issue 2
container_start_page 206
container_title Fire and materials
container_volume 40
creator Narkhede, Mahesh
Thota, Sammaiah
Mosurkal, Ravi
Muller, Wayne S.
Kumar, Jayant
description SUMMARY Thin films of environmentally safe, halogen free, anionic sodium phosphate and cationic polysiloxanes were deposited on a Nyco (1:1 nylon/cotton blend) fabric via layer‐by‐layer (LbL) assembly to reduce the inherent flammability of Nyco fabric. In the coating process, we used three different polysiloxane materials containing different amine groups including, 35–45% (trimethylammoniummethylphenythyl)‐methyl siloxane‐55‐65% dimethyl siloxane copolymer chloride salt (QMS‐435), aminoethylaminopropyl silsesquioxane‐methylsilsesquioxane copolymer oligomer (WSA‐7021) and aminopropyl silesquioxane oligomers (WSA‐991), as a positive polyelectrolyte. Thermo‐gravimetric analysis showed that coated fabric has char yield around 40% at 600 °C whereas control fabric was completely consumed. The vertical flame test (VFT) on the LbL‐coated Nyco fabric was passed with after flame time, 2 s, and the char length of 3.81 cm. Volatile and nontoxic degradation products of flame retardant‐coated fabric were analyzed by pyrolysis gas chromatography mass spectroscopy (Py‐GCMS). Surface morphology of coated fabrics and burned fabric residues were studied by scanning electron microscopy. Copyright © 2014 John Wiley & Sons, Ltd.
doi_str_mv 10.1002/fam.2280
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subjects Blends
Coating
Combustion
Fabrics
flame retardant
layer-by-layer coating
nylon/cotton blends
Nylons
Oligomers
phosphates
Polysiloxanes
Textile composites
water soluble polysiloxanes
title Layer-by-layer assembly of halogen-free polymeric materials on nylon/cotton blend for flame retardant applications
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