Chemical treatment of membranes of a polymer blend: mechanism of the reaction of hypochlorite with poly(vinyl pyrrolidone)

I.M. Wienk, E.E.B. Meuleman, Z. Borneman, Th. van den Boomgaard, C.A. Smolders

Research output: Contribution to journalArticleAcademicpeer-review

109 Citations (Scopus)

Abstract

Sodium hypochlorite solutions are used to treat membranes prepared from a polymeric blend containing poly(vinyl pyrrolidone) (PVP) to increase their water permeability. Sodium hypochlorite affects the membrane material in such a way that PVP is selectively removed from the membrane matrix. The mechanism of the reaction between hypochlorite and PVP is investigated by several chemical analysis techniques of the reaction products. Strong indications are found that the reaction involves chain scission of PVP according to a radical mechanism.

Original languageEnglish
Pages (from-to)49-54
Number of pages6
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume33
Issue number1
DOIs
Publication statusPublished - 1995

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