Ulbricht, Mathias; Hicke, Hans Georg:
Photomodification of ultrafiltration membranes. 1. Photochemical modification of polyacrylonitrile ultrafiltration membranes with aryl azides.
1993
In: Angewandte Makromolekulare Chemie, Band 210 (1993), S. 69 - 95
Artikel/Aufsatz in Zeitschrift / Fach: Chemie
Titel:
Photomodification of ultrafiltration membranes. 1. Photochemical modification of polyacrylonitrile ultrafiltration membranes with aryl azides.
Autor(in):
Ulbricht, Mathias im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Hicke, Hans Georg
Erscheinungsjahr
1993
Erschienen in:
Angewandte Makromolekulare Chemie, Band 210 (1993), S. 69 - 95
ISSN

Abstract:

Acrylonitrile-vinyl acetate copolymer (99:1) membranes were soaked in 0.05 M solns. of aryl azide in MeOH, resulting in an uptake of .apprx.1 * 10-4 mol azide/g membrane. UV photolysis products were examd. for membranes treated with Me 4-azidobenzoate (I) and 8 other arom. azides. The photolysis rate decreased with increasing irradn. time, with surface reactions occurring first. Photolysis products from I were 3, 13, and 5% Me 4-nitroso, 4-nitro-, and 4-aminobenzoate, resp. Strategies for secondary amine formation on the surface were discussed.