Calibration of the gel permeation chromatography polyester resins
نویسندگان
چکیده
منابع مشابه
High 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...
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O I 'H, I H H I in M I i I M' PROI'I H I Y ()( Hf R I'.Ul 1 AHN If rVVJf ST t'S GOVF.RNM NT, .vi.l i<; irMwi! for tlw niUx itvit ion ni sut li (.arsons nnl> ns ficcj to I nnw irs ( -inlrms m Mie crnifSP of Tln-ir d^i' n' .lulirs. '^ny [>erson finrlitij; this ilocurnpnl ■.houlil li.vm ii lu .i British force? unit .if to .1 (»ilirp smtirti hi its safe rpnirn 10 the MINISTRY l)[ ÜI f ( Nil , HQ Se...
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UNLABELLED BACKGROUND The analysis of cellulose molecular weight distributions by gel permeation chromatography (GPC) is a powerful tool to obtain detailed information on enzymatic cellulose hydrolysis, supporting the development of economically viable biorefinery processes. Unfortunately, due to work and time consuming sample preparation, the measurement of cellulose molecular weight distri...
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A major problem in gel permeation chromatography (GPC) or size exclusion chromatography is non-specific binding of applied proteins to the column matrix (stationary phase). We have tested an aqueous arginine solution as the GPC mobile phase on silica-based and polymer-based columns, using mouse monoclonal antibody and recombinant human activin, interleukin-6, basic fibroblast growth factor, and...
متن کاملPreparation of Chlorendic Acid Based Polyester Resins
Four polyesters were prepared by stepwise condensation of isopbthalic acid, cblorendic acid and maleic anhydride with propylene glycol using p-toluenesulpbonic acid as catalyst and xylene as entrainer. The quantities of maleic anbydride and propylene glycol used were 1 and 2.2 moles respectively and tbe molar ratios of cblorendic acid to isopbtbalic acid were 0.2: 0.8. 0.4: 0.6, 0.6: 0.4 and 0....
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ژورنال
عنوان ژورنال: Journal of Applied Polymer Science
سال: 1978
ISSN: 0021-8995,1097-4628
DOI: 10.1002/app.1978.070221128