Characterisation of gel permeation chromatography column by fractal geometry

Boborodea, A. G.; Clemens, M; Stere, Cristina; Vasilescu, Dan Sorin

doi:10.1007/s002890070074

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…1 H NMR spectra were recorded on a Varian Gemini 300BB spectrometer using acetone‐ d 6 as solvent. Molecular weights were characterized by GPC (Waters 510‐type apparatus, THF as solvent); the calibration method has been reported by us previously 10, 11…”

Section: Methodsmentioning

confidence: 99%

Copolymerization of the pair maleic anhydride–dicyclopentadiene: I. Copolymerization and post‐copolymerization at high conversion

Rusen

Marculescu

Albu

et al. 2004

Polymer International

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The present study describes the kinetic investigation of the complex binary copolymerization system maleic anhydride (MA)—dicyclopentadiene (DCPD). All syntheses were carried out in homogeneous solution; high conversions in soluble and linear copolymer are achievable when starting from an equimolecular monomer feed. Excess of DCPD would limit the attainable conversions, while surplus of MA would induce crosslinking of the copolymers. The findings of the thorough kinetic study were sustained by structural assessment from IR and NMR spectra recorded for various copolymers, both soluble and gels. Copyright © 2004 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Copolymerization of the pair maleic anhydride–dicyclopentadiene: I. Copolymerization and post‐copolymerization at high conversion

Rusen

Marculescu

Albu

et al. 2004

Polymer International

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show abstract

“…Starting from this idea and using the theory of Brochard‐Wyart,17 we have previously obtained the following relationship for K d to characterize the tri‐dimensional gel inside the chromatographic column:18 where L is the linear size and d f is the fractal dimension of the pores. In the fractal theory, the separation is governed by the same mechanism for both small chains and macromolecules having R g comparable with the pore dimension.…”

Section: Introductionmentioning

confidence: 99%

Gel permeation chromatography calibration based on fractal geometry

Boborodea

Clemens

Daoust

et al. 2004

J of Applied Polymer Sci

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ABSTRACT:The previously developed model [Polym Bull 2000, 44, 525] used to characterize the porous gel inside a gel permeation chromatography (GPC) column, has been extended to also include the interstitial space between the macroscopic gel particles. The hydrodynamic dimensions for 12 polystyrene (PS) standards, measured by GPC with differential refractive index (DRI), differential viscometry (VISCO), and multiangle laser light scattering (MALLS) detectors, have been used to determine the fractal parameters of the polystyrene-divinylbenzene gel corresponding to four commercial columns. The new developed model enables to predict the calibration curve for the sets of coupled columns based on the parameters of each column. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: [771][772][773][774][775][776][777] 2004

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Characterisation of gel permeation chromatography column by fractal geometry

Cited by 2 publications

References 3 publications

Copolymerization of the pair maleic anhydride–dicyclopentadiene: I. Copolymerization and post‐copolymerization at high conversion

Copolymerization of the pair maleic anhydride–dicyclopentadiene: I. Copolymerization and post‐copolymerization at high conversion

Gel permeation chromatography calibration based on fractal geometry

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