Thermal Stability of the THPOH-NH3 Flame Retardant on Cotton

The thermal degradation of the ammonia-cured, neutralized, tetrakis(hydroxymethyl)phosphonium chloride finish (called THPOH-NH3) on cotton was investigated. Thermogravimetric analysis (TGA) in nitrogen showed a two- stage weight loss on heating, a small loss at about 240°C, and a large loss at about...

Full description

Saved in:
Bibliographic Details
Published in:Textile research journal 1975-09, Vol.45 (9), p.667-673
Main Authors: Hobart, Stanley R., Mack, Charles H.
Format: Article
Language:English
Subjects:
Chlorides
Cotton
Finishes
Flame retardants
Heating
Textiles
Thermogravimetric analysis
Weight loss
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermal degradation of the ammonia-cured, neutralized, tetrakis(hydroxymethyl)phosphonium chloride finish (called THPOH-NH3) on cotton was investigated. Thermogravimetric analysis (TGA) in nitrogen showed a two- stage weight loss on heating, a small loss at about 240°C, and a large loss at about 300°C that was associated with cellulose pyrolysis. Electron spectroscopy for chemical analysis indicated that the small weight loss resulted from loss of a trivalent phosphorus-containing moiety. Oxidation by air or hydrogen peroxide eliminated the TGA weight loss in nitrogen at 240°C, apparently by conversion of the trivalent phosphorus structure to a stable pentavalent phosphorus- containing material. Differential scanning calorimetry examination of the THPOH-NH,-treated materials confirmed the TGA findings.
ISSN:0040-5175
1746-7748
DOI:10.1177/004051757504500904