Accession Number : AD0717630

Title :   Recycle Gel Permeation Chromatography. Part I. Recycle Principle and Design. Part II. Analysis of Epoxy Resins.

Descriptive Note : Technical rept.,

Corporate Author : STEVENS INST OF TECH HOBOKEN N J DEPT OF CHEMISTRY AND CHEMICAL ENGINEERING

Personal Author(s) : Biesenberger,J. A. ; Tan,M. ; Duvdevani,I. ; Maurer,T.

Report Date : DEC 1970

Pagination or Media Count : 17

Abstract : A new recycle circuit for Gel Permeation Chromatography (GPC), named alternate pumping (AP), is described and applied to the fractionation of epoxy resins. Conceptual as well as design details for AP recycle are presented. Advantages and limitations of AP recycle as compared with conventional recycle are discussed in detail. A calibration curve together with the molecular weight spectra of four competitive commercial epoxy resins are used to demonstrate that greatly improved resolution of oligomers into individual peaks is possible with recycle GPC. (Author)

Descriptors :   (*POLYMERS, *CHROMATOGRAPHIC ANALYSIS), (*EPOXY RESINS, CHROMATOGRAPHIC ANALYSIS), MOLECULAR WEIGHT, LABORATORY EQUIPMENT, RESOLUTION

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE