Calibration of light-scattering instruments. III. Absolute angular intensity measurements on mie scatterers

Preparation and Characterization of Sulfonated Polystyrene Latexes

“…The agreement of il?, from light scattering TI it11 the l p , coinputed by adding the sulfonate and cation \\eight to the particle (Table 111) for fractions F l , F2, and F3 suggests that the aggregation is an artifact produced by the drying process in the preparation of speci~llens for electron microscopy. The absence of aggregates in polystyrene latexes has previously been reported by Da~ldlilter (24) and inore recently by I<ratohvil and Smart (30). Thus the first tn o criteria are satisfactorily I I I C~ bl-fractions F l , F2, and F3.…”

Size distribution of polymer latexes from light‐scattering measurements

“…were determined by extrapolation of measurements at several concentrations, c (in g./g. ), to c = 0, over a wide range of angles of observation, 8 (30°-1350 in s t e p s of 5") in the manner described previously ( 3 ) . Ve,, and H8,h represent the vertically and horizontally polarized components of the Rayleigh ratio, with the incident radiation being polarized a s indicated by the subscripts.…”

Light Scattering

“…On the other hand, if the lightscattering instrument is calibrated to obtain absolute values of the Rayleigh ratios, the method can be applied directly to the Rayleigh ratios. In Figure 13 (37), the smooth curve is a plot of (47t2/X2)F"(0) against a for ctM = 9.8, Vo = 0.02. This is a close fit to the experimental data for a polystyrene latex which are depicted by circles.…”