Photochemically induced grafting and graft-polymerization of 4-(N-ethyl-N-2-acryloxyethyl)amino-4'-nitro-azobenzene I, brought into contact in the solid state with cellulose by evaporation of solvent from monomer solutions, has been investigated kinetically at 30°C. Two constant rate periods were observed. The first one was interpreted on the basis of a self-sensitized grafting mechanism of monomeric or oligomeric species of I, photochemically initiated by hydrogen abstraction from the cellulose surface. The second one was explained as a self-sensitized photochemically induced graft-polymerization of I on the first grafted layer. Some particular features, such as concurrent photodegradation of the first grafted layer at low surface coverage, are discussed in the light of the proposed mechanism.
Photochemical grafting of acrylated azo dyes onto polymeric surfaces. IV. Grafting of 4-(N-ethyl-N-2-acryloxyethyl)amino-4'-nitro-azobenzene onto cellulose / I.R. Bellobono, S. Calgari, M.C. Leonardi, E. Selli, E. Dubini Paglia. - In: DIE ANGEWANDTE MAKROMOLEKULARE CHEMIE. - ISSN 0003-3146. - 100(1981), pp. 135-146.
|Titolo:||Photochemical grafting of acrylated azo dyes onto polymeric surfaces. IV. Grafting of 4-(N-ethyl-N-2-acryloxyethyl)amino-4'-nitro-azobenzene onto cellulose|
BELLOBONO, IGNAZIO RENATO (Primo)
SELLI, ELENA (Penultimo)
|Parole Chiave:||acrylic compounds; azo dyes; cellulose; chemical kinetics; mechanism; paper; photochemical reactions; reaction rate|
|Settore Scientifico Disciplinare:||Settore CHIM/02 - Chimica Fisica|
Settore CHIM/04 - Chimica Industriale
|Data di pubblicazione:||1981|
|Appare nelle tipologie:||01 - Articolo su periodico|