Kd. Crawford et Kd. Hughes, RAPID SPECTROSCOPIC CONFIRMATION OF THE PRESENCE OF POLYSTYRENE IN POLYMER PARTICLES OF MIXED COMPOSITION, Journal of polymer science. Part B, Polymer physics, 36(6), 1998, pp. 999-1004
A technique for rapid determination of the presence of polystyrene in
individual micron-diameter polymer particles of mixed composition is p
resented. This technique is based upon observation of visible emission
from conjugated regions of the polymer backbone, generated photochemi
cally, while the particle is held in an optical trap. Particle emissio
n characteristics are dependent upon particle size and suspending solv
ent. Emission spectra are provided for single component polystyrene pa
rticles and mixed polymer particles containing poly(methyl methacrylat
e), poly(N-vinyl pyrrolidone), and polystyrene. (C) 1998 John Wiley &
Sons, Inc.