https://web.itu.edu.tr/okayo/pdf/00review.pdf

Macroporous copolymer networks

PROBLEM TO BE SOLVED: To perform molecular weight measurement and separation of a fluorine containing organic substance slightly soluble in a general organic solvent by means of size exclusion chromatography by using a solvent containing dichloro pentafluoropropane as a mobile phase and using polymethyl methacrylate with a known molecular weight as a molecular weight measurement standard specimen. SOLUTION: As a mobile phase. a solvent containing HCFC225 such as a solvent containing only HCFC225 and a mixture solvent containing HCFC225 and other solvents are available. HCFC225 is selected from one or more kinds of substances selected from chlorinated fluorinated hydrocarbons with a molecular formula represented by C3 HF3 Cl2 . As the HCFC225, several kinds of isomers with the same molecular formula and different structures are known, however, HCFC225ca (CF3 CF2 CHCl2 ), HCFC225cb (CF2 ClCF2 CFHC1), and a mixture of them are desirable. As a molecular weight measurement standard specimen, polymethyl methacrylate with a known molecular weight is used.

https://www.springer.com/productFlyer_978-3-540-65635-7.pdf?SGWID=0-0-1297-1427978-0

Size Exclusion Chromatography

The characterization and evaluation of three novel 5-μm HPLC column packings, prepared using ethyl-bridged hybrid organic/inorganic materials, is described These highly spherical hybrid particles, which vary in specific surface area (140, 187, and 270 m2/g) and average pore diameter (185, 148, and 108 A), were characterized by elemental analysis, SEM, and nitrogen sorption analysis and were chemically modified in a two-step process using octadecyltrichlorosilane and trimethylchlorosilane The resultant bonded materials had an octadecyl surface concentration of 317−335 μmol/m2, which is comparable to the coverage obtained for an identically bonded silica particle (344 μmol/m2) that had a surface area of 344 m2/g These hybrid materials were shown to have sufficient mechanical strength under conditions normally employed for traditional reversed-phase HPLC applications, using a high-pressure column flow test The chromatographic properties of the C18 bonded hybrid phases were compared to a C18 bonded sil

Characterization and evaluation of C18 HPLC stationary phases based on ethyl-bridged hybrid organic/inorganic particles

L. L. Lloyd

Papers

Chromatographic Characteristics of polymer-based high-performance liquid chromatography packings

Reversed-phase high-performance liquid chromatography with a C18 polyacrylamide-based packing

Rigid polyacrylamide gels for high-performance size-exclusion chromatography

Rigid polymeric packings for aqueous size exclusion chromatography

Gel permeation chromatography with macroporous crosslinked polyacrylamide gel: Examination of universal calibration for aqueous and polar eluents