Fractionation of poly(methyl methacrylate) by precipitation chromatography

摘要: Abstract Three radically initiated poly(methyl methacrylate) samples have been prepared and fractionated by precipitation chromatography. Fractions in the mol. wt. range 0·37–34·6 × 105 isolated. Successful resolution of high was accomplished with a narrow temperature gradient, slow elution flow rate, change solvent—non-solvent composition, ratio mixing vessel to polymer load. The fractions were examined turbidimetric titration refractionated chromatography gel permeation found symmetrical distributions, confirming efficiency use Schulz—Dinglinger procedure for treatment fractionation data. It is suggested that, methacrylate), solubility may be influenced adsorption onto column packing.