منابع مشابه
Porous Polymers: Liquid Chromatography
increase in the surface area, demonstrating that the Fe(III) ions work by making the resin porous. The use of these two metal ions enables efRcient NO adsorption. The polymeric resin as well as the metal complex itself greatly affects the adsorbing ability for the target gas molecules as described in the case of CO, C2H4, and NO adsorption. It has been demonstrated clearly that large surface ar...
متن کاملSize Exclusion Chromatography of Polymers
In the characterization of polymers, size-exclusion chromatography (SEC) has become a standard technique for determining molar mass averages andmolar mass distributions (MMD) of polymers. The principle of SEC is easily understood: owing to limited accessability of the pore volume within the particles of the column packing, polymer molecules are separated according to their hydrodynamic volumes,...
متن کاملHigh Performance Gel Permeation Chromatography of Polymers
The determination of the molecular weight distribution by gel permeation chromatography requires the establishment of a molecular weight calibration and efficient columns in order to minimise chromatogram broadening. The separation process is described in terms of steric exclu— sion, retardation and partial exclusion mechanisms in order to show how the universal calibration method may be influe...
متن کاملChiral separations in microemulsion electrokinetic chromatography. Use of micelle polymers and microemulsion polymers.
In this study, microemulsions of the chiral surfactant polysodium N-undecenoyl-D-valinate (poly-D-SUV) was utilized for enantiomeric separation by investigating two approaches using polymeric chiral surfactant in microemulsion electrokinetic chromatography (MEEKC). In the first approach, poly-D-SUV was used as an emulsifier surfactant along with 1-butanol and n-heptane. Enantioseparation of ani...
متن کاملField-flow Fractionation of Polymers: One-phase Chromatography
Field-flow fractionation (FFF) is introduced as a one-phase chromatographic system utilizing an external field to differentially retain high molecular weight polymeric and particulate species. The principles and theory of FFF are described. FFF and exclusion chromatography are then compared on the basis of their underlying separative mechanisms, and the way that these mechanisms influence and l...
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ژورنال
عنوان ژورنال: Kobunshi
سال: 1977
ISSN: 0454-1138,2185-9825
DOI: 10.1295/kobunshi.26.417