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- Title
Layer-by-layer assembly of halogen-free polymeric materials on nylon/cotton blend for flame retardant applications.
- Authors
Narkhede, Mahesh; Thota, Sammaiah; Mosurkal, Ravi; Muller, Wayne S.; Kumar, Jayant
- Abstract
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.
- Subjects
COMBUSTION; FIREPROOFING agents; HALOGEN compounds; SILOXANES; SODIUM phosphates
- Publication
Fire & Materials, 2016, Vol 40, Issue 2, p206
- ISSN
0308-0501
- Publication type
Article
- DOI
10.1002/fam.2280