Relief of Shrinkage of UV-cured Materials by Exchange Reactions of Disulfide Bonds

Relief of Shrinkage of UV-cured Materials by Exchange Reactions of Disulfide Bonds

UV-cured films containing disulfide bonds were fabricated by radical UV curing with a diacrylate monomer. The free standing films were characterized by DSC, XPS, and Raman spectral measurements. Film shrinkage due to volume contraction during radical polymerization reactions was relieved by heating...

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Veröffentlicht in:Journal of Photopolymer Science and Technology 2019/06/24, Vol.32(4), pp.623-626
Hauptverfasser: Furutani, Masahiro, Okuma, Kazuki, Arimitsu, Koji
Format: Artikel
Sprache:eng
Schlagworte:
Bonding
Disulfide bond
Exchange reaction
Heat exchange
Internal stress
Radical UV curing
Residual stress
Shrinkage
Ultraviolet radiation
UV-cured material
X ray photoelectron spectroscopy
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Zusammenfassung:UV-cured films containing disulfide bonds were fabricated by radical UV curing with a diacrylate monomer. The free standing films were characterized by DSC, XPS, and Raman spectral measurements. Film shrinkage due to volume contraction during radical polymerization reactions was relieved by heating at 60 ℃ for 2 min, which was not observed in the control film sample containing no disulfide bonds. This quick relaxation would be due to relaxing the internal stress by exchange reactions between disulfide bonds.
ISSN:0914-9244
1349-6336
DOI:10.2494/photopolymer.32.623