Overcoming oxygen inhibition in UV-curing of acrylate coatings by carbon dioxide inerting: Part II

The photoinitiated radical polymerization of acrylate resins has been shown to proceed more rapidly and extensively in a carbon dioxide atmosphere than in the presence of air. Polymerization profiles were recorded by real-time infrared spectroscopy for a few micron thick coatings exposed for 1 s to...

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Bibliographic Details
Published inProgress in organic coatings Vol. 48; no. 1; pp. 101 - 111
Main Authors Studer, Katia, Decker, Christian, Beck, Erich, Schwalm, Reinhold
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 01.11.2003
Elsevier Sequoia
Subjects
Acrylate coatings
Applied sciences
Carbon dioxide inerting
Coatings. Paints, varnishes and inks
Components, formulation
Exact sciences and technology
Oxygen inhibition
Photopolymerization
Polymer industry, paints, wood
Oxygen inhibition
Carbon dioxide inerting
Photopolymerization
Acrylate coatings
Oxygen
Free radical polymerization
Coating material
Acrylate polymer
Conversion rate
Formulation
Carbon dioxide
Reaction inhibition
Kinetic parameter
Binders
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Summary:The photoinitiated radical polymerization of acrylate resins has been shown to proceed more rapidly and extensively in a carbon dioxide atmosphere than in the presence of air. Polymerization profiles were recorded by real-time infrared spectroscopy for a few micron thick coatings exposed for 1 s to UV radiation. The importance of O 2 inhibition was shown to depend on a number of factors, such as the nature and concentration of the photoinitiator, the reactivity and viscosity of the acrylate monomer, and the wavelength and intensity of the UV radiation. CO 2 inerting was required for achieving an effective surface cure of poorly reactive formulations exposed to UV light of low intensity.
ISSN:0300-9440
1873-331X
DOI:10.1016/S0300-9440(03)00149-8