The synthesis and the characterization of rigid-rod polyesters 2 and 3 deriving from 2',5'-dihexyl-pterphenyl-4,4"-diol 7 and from 2',5'-dihexyl-p-terphenyl-4,4"-dicarboxylic dichloride 8 together with a facile synthesis of monomers 7 and 8 is described. It is shown that these polyesters exhibit a very good solubility in common organic solvents. Therefore these materials present interesting model compounds for comprehensive studies of rigid-rod polymers in solution.
An analysis of the radial structure of carboxylated latex particles by small-angle X-ray scattering (SAXS) is given. The latex was prepared by a batch emulsion polymerization of methyl methacrylate and methacrylic acid. The analysis of the SAXS intensities leads to the conclusion that the particles of numberaverage diameter 90.8 nm exhibit a pronounced core-shell structure, i.e., practically all the carboxyl groups are located within a shell of 13.6 nm thickness.
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