Abstract

An experimental study was carried out for the development and characterization of innovative photopolymerizable siloxane-modified acrylic formulations for possible use as protective coatings. The kinetics of the radical photopolymerization mechanism induced by UV and visible radiations in presence of suitable photoinitiators was studied by a calorimetric analysis by varying the testing conditions (temperature, light power emission, atmosphere). The reactivity, expressed in terms of both heat developed and rate of reaction, was generally found to decrease when the photopolymerization was carried out in air, due the inhibiting action of the oxygen towards the free radical polymerization. The addition of both a silane coupling agent or a high molecular weight polysiloxane monomer to the acrylic resin was found to reduce the heat of reaction. Experimental data were fitted to a kinetic model to quantify the effects of light intensity and temperature on reaction rates and extent of reaction. A good agreement between the experimental data and the theoretical model was generally found.

Autore Pugliese

• Frigione Mariaenrica , Esposito Corcione Carola

Tutti gli autori

• C. Esposito Corcione , A. Previderio , M. Frigione

Titolo volume/Rivista

THERMOCHIMICA ACTA

Anno di pubblicazione

2010

ISSN

0040-6031

ISBN

Non Disponibile

Numero di citazioni Wos

32

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

25

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile