Qualitative and quantitative analysis of a thermoset polymer, poly(benzoxazine), by pyrolysis-gas chromatography.
The chemical composition of a poly(benzoxazine) thermoset polymer (a copolymer of bisphenol-A benzoxazine and tert.-butylphenol benzoxazine) has been studied by pyrolysis-gas chromatography (Py-GC). Major pyrolysates have been identified and the possible degradation pathways have been investigated. A specific pyrolysate was identified for quantitative analysis after carefully proving the linear relationship between the pyrolysate signal intensity and monomer concentration over a wide range of compositions. A method to determine the concentration of the monomer that potentially acts as a cross-linking unit has been developed. In this study, Py-GC was shown to be an excellent analytical technique for the qualitative and quantitative analysis of thermoset polymers.
Wan
F C
FC
Analytical Sciences Laboratory, Michigan Division, The Dow Chemical Company, Midland 48667, USA.
Dettloff
M L
ML
Null
M J
MJ
White
J E
JE
D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010078:Oxazines / Q000032:analysis*; D011108:Polymers / Q000737:chemistry*
D010078:Oxazines; D011108:Polymers