Characterization of Polymethylene Oxide Oligomers lnvolved in Aqueous Formaldehyde Solutions by Gel Permeation Chromatography

Abstract

In an aqueous solution of an equilibrium mixture of methylene glycols and polympethylgne xides with d ent 1 w m iecular weights, f rmaldehyde is kn wn t exist The p, lymeriza tV U nVVVde |rV6bM(rmP)ntThMnMdTits distribution Vhavd been studied by gel permeation chromatography xides with d ent 1 w m iecular weights, f rmaldehyde is kn, wn t exist The p lymeriza tV U nVVVde |rV6bM(rmP)ntThMnMdTits distribution Vhavd been studied by gel permeation chromatography end gr up analySis using near infrared spectr spc py H wever, the c e cient f va anee for th reProducibility of the GPC experiments was less than 50/o.
S Vuc-hV g reproduci5ility implies that the rate of depelymerization of the oligomers is much slower in THF than in water. but apparent values of P.