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Acrylic latex photon correlation

Figure 2. Effect of equilibration time on carboxylic particle expansion at pH = 12.5 as determined by photon correlation spectroscopy. The confidence interval on d is at the 90% probability level. The initial particle size is given by d0 (acrylic latex, 2% AA(ll), d0 = 1120 A). Figure 2. Effect of equilibration time on carboxylic particle expansion at pH = 12.5 as determined by photon correlation spectroscopy. The confidence interval on d is at the 90% probability level. The initial particle size is given by d0 (acrylic latex, 2% AA(ll), d0 = 1120 A).
Figure 5 shows the swelling behavior of the model acrylic latexes as determined by photon correlation spectroscopy. Changes in particle diameter are shown instead of radius as in Figures 3 and 4. The diameter, d, at each pH was divided by the initial diameter, d0, determined at pH = 5 (unexpanded). In general shape, the curves are similar to those determined by sedimentation and viscometry. The initial points occurred at a higher pH due to the much lower particle concentration. No effort was made to lower the initial pH with acid consequently, the undesirable salt effect was avoided. [Pg.271]

Figure 7. Expansion characteristics of PMMA latex containing 3% acrylic acid (Stage II) as determined by photon correlation spectroscopy... Figure 7. Expansion characteristics of PMMA latex containing 3% acrylic acid (Stage II) as determined by photon correlation spectroscopy...
Figure 8. Effect of added electrolyte (0.01M NaCl) on the expansion characteristics of a model carboxylic latex as determined by photon correlation spectroscopy (( ) acrylic latex, 2% AA(II), d = 1120 A same latex in 0.01 M NaCl, d0 =... Figure 8. Effect of added electrolyte (0.01M NaCl) on the expansion characteristics of a model carboxylic latex as determined by photon correlation spectroscopy (( ) acrylic latex, 2% AA(II), d = 1120 A same latex in 0.01 M NaCl, d0 =...
Wide angle light scattering is used as the principal probe to examine the core-shell structure proposed for certain acrylic acid acrylate ester copolymer latexes. Additional techniques were sedimentation and photon correlation spectroscopy. [Pg.279]


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