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United States Department of Agriculture

Agricultural Research Service

Research Project: CHEMICAL MODIFICATIONS OF COTTON TEXTILES

Location: Cotton Chemistry and Utilization Research

Title: Study of Phosphorous and Nitrogen Containing Economic Flame Retardant Materials and Their Textile Application

Authors
item Chang, Sechin
item Condon, Brian
item Edwards, Judson
item Graves, Elena
item Wakelyn, Phillip -

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: December 15, 2008
Publication Date: N/A

Technical Abstract: Recently, we have discovered that cyanuric chloride is excellent starting materials for preparing with phosphonates that interact well with cotton to improve flame retardant (FR) performance properties. The mono- or bis-(dimethoxy-hydroxymethyl phosphonyl) cyanurate derivatives have been prepared by simple two steps in high yield. The treatment of cotton fabrics with new FR material are primary in a manner that results in covalent bonding formation between the FR material and the cotton fabrics. A new FR system is need for more efficient flame retardant at low cost, to meet government mandates. This new FR system and cotton textiles treated with FR material were developed, synthesized and characterized by 1H and 13C nuclear magnetic resonance (NMR) spectra, cross polarization and magic angle spinning (CP/MAS) 13C NMR spectra, FT-IR, thermogravimetry analysis (TGA), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM). Also, we tested the new FR system by limiting oxygen index (LOI, ASTM D2863-00), 45º angle and vertical flame test (ASTM D1230-94 and D6413-99). In addition, we discuss phosphorus containing flame retardant compounds and the properties for covalently bonded cotton’s surface. We will show the design, synthesis, and characterization of (2-methyl-oxiranylmethyl)-phosphonic acid dimethyl ester and [2-(dimethoxy-phosphorylmethyl)-oxyranylmethyl]-phosphonic acid dimethyl ester and cured with dicyandiamide and citric acid. These monomers were grafted onto cotton fabrics (plain weave, twill and fleece) to impart flame resistance.

Last Modified: 4/24/2014
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