Answers are grounded in this paper and cite their sources.
A multistage scheme was developed for the separation of vinyl chloride (VC) oligomers. A low-molecular-weight fraction was isolated from poly(vinyl chloride) by Soxhlet extraction with diethyl ether followed by fractional precipitation with n-pentane. The presence of VC oligomers up to decamer was demonstrated by high-performance gel permeation chromatography (HPGPC). Removal of polar impurities was accomplished by preparative adsorption liquid chromatography of the low-molecular-weight fraction. Recycle HPGPC with repeated injections permitted the accumulation of fractions of VC pentamer oligomers which were resolved into their isomers by high-performance liquid chromatography (HPLC) off-line. These results were duplicated utilizing a coupled column system comprising of recycle HPGPC connected on-line to HPLC. This coupled technique was then applied to the hexamer and heptamer oligomers which were resolved into their constituent isomers.
No takes yet. Share an insight, caveat, or question.
Celik et al. (1998) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: