Estimation of molecular weight distributions by gel chromatography
โ Scribed by N.W.H. Cheetham; D.J. Winzor
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 524 KB
- Volume
- 48
- Category
- Article
- ISSN
- 1873-3778
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โฆ Synopsis
An improved method of boundary analysis is described whereby the molecular weight distributions of polydisperse solutes may be estimated by frontal gel chromatography. Its application to elution profiles obtained with a dextran fraction on Sephadex G-zoo demonstrates the necessity of allowing for the effects of eddy diffusion, "a phenomenon that has usually been neglected in gel chromatographic analyses of molecular weight distributions.
๐ SIMILAR VOLUMES
The number-and weight-average molecular weights of several statistical and high ortho novolac resins were determined using gel permeation chromatography (GPC). The standards used were pure compounds having between 2 and 12 phenol units bridged via methylene linkages. Three series of compounds were s
Gel permeation chromatograms of block copolymers of cis 1:4 polyisoprene and polystyrene with narrow molecular weight and composition distributions have been examined by the normal -probability plot method. The parameters l~lw, 1~I, and standard deviation ~ have been evaluated and the results compar