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United States Department of Agriculture

Agricultural Research Service

Title: Flame Resistance of Cotton/polyester Fleece with Phosphorus-Based Polycarboxylic Acids

item Blanchard, Eugene
item Graves, Elena

Submitted to: American Association of Textile Chemists and Colorists Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: October 20, 2002
Publication Date: N/A

Technical Abstract: Phosphorus-based polycarboxylic acids, such as sodium phosphinicosuccinic acid or sodium phosphinicobissuccinic acid, were used to chemically modify 80/20 cotton fleece fabric. These acids are readily prepared by reaction of maleic acid with sodium hypophosphite in aqueous solution. Esterification of cellulose was achieved by reaction of the acid with cotton in the presence of a suitable catalyst. Neutralization of the acid allows treatment at pH levels of 3-4.5, which is in contrast to levels of approximately pH 2 with the maleic acid-sodium hypophosphite treatment system.. Good reactivity occurred upon curing at 170-180C for 1.5-3 min. and esterification effectivenesswas determined by phosphorus analysis. Various factors, including concentration levels of chemical agents, reaction conditions and thermogravimetric analysis of the substrates are presented.

Last Modified: 4/17/2015
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