Gradient polymer elution chromatographic analysis of α,ω-dihydroxypolystyrene synthesized via ATRP and click chemistry

Coupled liquid chromatographic techniques for the separation of complex polymers

Determination of chemical composition distributions in synthetic polymers.

Propagation rate constants have been determined at two temperatures (298 K and 323 K) for the copolymerizations of styrene (STY) with methyl acrylate (MA) and STY with n-butyl acrylate (BA) over a range of monomer feed compositions. A pulsed UV laser was used as an initiation source and gel permeation chromatography (GPC) was utilized to analyse the products. None of the copolymerizations conformed to the Mayo-Lewis model, with respect to their propagation rate constants. The results were interpreted on the basis of a penultimate effect on the propagation reaction. In addition, Mark-Houwink constants were determined for poly(MA) and poly(BA) in tetrahydrofuran (THF) at 298 K. These constants are given as (K(dm3 kg- I), a): 7.88 x 10- ', 0.885 and 8.57 x lo', 0.865 for poly(MA) and poly(BA) respectively.

Copolymerization propagation kinetics of styrene with alkyl acrylates

Polymer molecular weight characterization by temperature gradient high performance liquid chromatography

Molecular Weight Distribution and Correlation between Chemical Composition and Molecular Weight in a High-Conversion Copolymer of Styrene-Methyl Acrylate

Makoto Akatsuka

Papers

Molecular Weight Distribution and Correlation between Chemical Composition and Molecular Weight in a High-Conversion Copolymer of Styrene-Methyl Acrylate

Separation of Styrene-Methyl Acrylate Copolymer According to Chemical Composition, Using High-Speed Liquid Chromatography