Determination of residual monomer in polymer latex by full evaporation headspace gas chromatography.
This study demonstrated a full evaporation (FE) headspace gas chromatographic technique for the determination of residual monomer in methyl methacrylate (MMA) polymer latex. A very small amount (approximately 10-30 mg) of latex was added to a sealed headspace sample vial (20 ml). A near-complete monomer mass transfer from both liquid (aqueous phase) and solid phase (polymer particles) to the vapor phase (headspace) is achieved within 5 min at a temperature of 110 degrees C. The method eliminates sample pretreatment procedures such as the solvent extraction. Thus, it avoids the risk of polymer deposition on the GC system caused by a directly injection of extraction solvent in the conventional GC monomer analysis. The present method is simple, rapid, and accurate.
Chai
X S
XS
Institute of Paper Science and Technology, Georgia Institute of Technology, 500 10th Street, N. W., Atlanta, GA 30332, USA. chai@ipst.gatech.edu
Hou
Q X
QX
Schork
F J
FJ
D002849:Chromatography, Gas / Q000379:methods*; D020366:Methylmethacrylate / Q000032:analysis* / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D013696:Temperature
D011108:Polymers; D020366:Methylmethacrylate