Gel permeation chromatography VII. Molecular weight detection of gpc effluents

作者: A. C. Ouano

DOI: 10.1002/POLC.5070430126

关键词:

摘要: A detector system for GPC has been built consisting of a pressure cell and capillary viscometer, constant flow rate pumping system, concentration detector, computer interfacing system. This provides two chromatograms; drop (ΔP) vs retention volume (C) volume. Since at ΔP is proportional to the effluent viscosity η, intrinsic any fraction can be computed from equation, where subscripts 1 0 refer solution solvent, respectively. The precision accuracy above technique were evaluated using well characterized broad narrow molecular weight distribution polymers. Both found comparable light scattering other classical measurement techniques. In its present form, was very sensitive polymers with high weights, as expected, also useful weights less than 50,000.

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