2-D chromatography applied to the study of block copolymers synthesized by nitroxide-mediated controlled free-radical seeded emulsion polymerization.
2-D chromatography with gradient polymer elution chromatography in the first dimension was used to characterize a series of block copolymers prepared by nitroxide-mediated controlled free-radical seeded emulsion polymerization. The data provide a detailed picture of the different populations generated during the successive stages of the reaction. In particular, deviations from ideal conditions, such as an exothermic temperature spike, are obvious from the 2-D chromatogram, and its interpretation provides unique insight into the reaction mechanisms. Finally, atomic force microscopy images obtained on films cast from copolymer solutions evidence the relationship between polymer microstructure and film morphology.
Arkema, King of Prussia, PA, USA. stephan.moyses@sabic-ip.com
Stephan
S
Moyses
Jason
J
Ness
George
G
Papakonstantopoulos