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Tailored “Grafting-From” Functionalization of Microfiltration Membrane Surface Photo-Initiated by Immobilized Iniferter

✍ Scribed by Dongming He; Mathias Ulbricht

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
633 KB
Volume
210
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Surface‐selective graft functionalization of hydrophilized poly(propylene) microfiltration membrane has been realized by two steps: (i) immobilization of dithiocarbamate group as iniferter and (ii) heterogeneous photo‐graft copolymerization controlled by this iniferter. Investigations regarding controllability of photo‐grafting were carried out with varied monomer concentration and UV‐irradiation time as well as cross‐linker monomer content by using ATR‐FTIR spectroscopy, scanning electron microscopy, water permeability, and measurements of pore size distribution. The developed grafting method exhibits high surface‐grafting selectivity and efficiency, uniform modification and high controllability over grafted layer thickness and (cross‐linked) architecture.

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