Can I read Crosslinked Poly(vinyl Alcohol) Membranes on EtoBox?

Crosslinked Poly(vinyl Alcohol) Membranes by Brian Bolto; Thuy Tran; Manh Hoang; Zongli Xie is a Materials Science article available to read on EtoBox.

What is Crosslinked Poly(vinyl Alcohol) Membranes about?

The inherent hydrophilicity of poly(vinyl alcohol) (PVA) makes it an attractive polymer for water treatment applications based on membranes. Thermal and chemical resistance and a high anti-fouling potential are accompanied by high water permeability. The large swelling capacity requires that the PVA be adequately crosslinked to ensure that the contaminants in water can be retained, and that compaction under pressure can be minimised. There is a challenge to achieve this and still obtain economical permeate fluxes. The literature on crosslinking of PVA is reviewed. Many reagents have been explored. Glutaraldehyde is a more effective crosslinking agent than formaldehyde or glycidyl acrylate, which in turn gives a less swollen product than that obtained by increasing the crystallinity by heating. Toluene diisocyanate and acrolien give similar results in the preparation of reverse osmosis membranes, but at an extremely high applied pressure. Crosslinking with maleic anhydride/vinyl methyl ether copolymers gives as good a result, but at even higher pressure. Thus the high swelling of PVA can be overcome by crosslinking reactions, but with the consumption of some of the OH groups respons

Who reads Crosslinked Poly(vinyl Alcohol) Membranes?

Author

Brian Bolto; Thuy Tran; Manh Hoang; Zongli Xie

Publisher

Elsevier BV

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)