Chapter 107. New Insights in the Influence of Oxygen on the Photocrosslinking of Silicone Acrylates

  1. Prof. Norbert Auner2 and
  2. Prof. Johann Weis3
  1. U. Müller

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch107

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Müller, U. (2000) New Insights in the Influence of Oxygen on the Photocrosslinking of Silicone Acrylates, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch107

Editor Information

  1. 2

    Inst. für Anorganische Chemie, der Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt am Main, Germany, Phone: 0 69/7 98-29180, -29591, Fax: 069/798-29188

  2. 3

    Wacker-Chemie GmbH, Geschäftsbereich S, Werk Burghausen, Johannes-Hess-Strasse 24, D-84489 Burghausen, Germany

Author Information

  1. Institut für Organische Chemie Martin-Luther-Universität Halle- Wittenberg Geusaer Straße, D-06217 Merseburg, Germany Tel.: Int. code + (3461)462009 — Fa.: Int. code + (3461)462081

Publication History

  1. Published Online: 28 APR 2008
  2. Published Print: 17 JAN 2000

ISBN Information

Print ISBN: 9783527298549

Online ISBN: 9783527619917

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Keywords:

  • photocrosslinking;
  • initiator photolysis;
  • silicone acrylate

Summary

Many initiators used in radical photopolymerization are carbonyl compounds. It is well known that the IR frequency of the carbonyl group depends strongly on the substituent. During photolysis of the initiator radicals are formed, which initiate the crosslinking reaction. All in all, this results in a disappearance of the carbonyl group or in a shift of the frequency of the C[DOUBLE BOND]O stretching vibration. Therefore, such types of reactions are suitable to monitor the disappearance of the initiator during its photolysis. Moreover, this type of reaction is suitable to study the influence of oxygen on the initiation process. This work presents results of the initiator photolysis (benzoin type) in a silicone acrylate layer measured by means of real time infrared (RTIR), IR, and GC/MS techniques. Moreover, correlations between the initiator photolysis and crosslinking rate of the silicone acrylates are shown.