Relief of Shrinkage of UV-cured Materials by Exchange Reactions of Disulfide Bonds
2019 年 32 巻 4 号 p. 623-626
詳細
2019 年 32 巻 4 号 p. 623-626
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.
