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Ink and moisture sorption study in UV‐curable polyurethane acrylate
Author(s) -
Tey J. N.,
Soutar A. M.,
Priyadarshi A.,
Mhaisalkar S. G.,
Hew K. M.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.25118
Subject(s) - swelling , polyurethane , solvent , acrylate , moisture , materials science , curing (chemistry) , sorption , solubility , composite material , desorption , thermal diffusivity , hildebrand solubility parameter , polymer chemistry , chemical engineering , chemistry , organic chemistry , polymer , copolymer , adsorption , thermodynamics , engineering , physics
A study of the interaction of commercial black ink with a UV‐curable polyurethane acrylate (PUA) is presented. Diffusivity and solubility in PUA cured using different UV dosages, and subjected to different post‐UV curing conditions, were studied, as was the swelling produced by such sorption. Experiments were also conducted using water, to serve as a benchmark and compare with the effect of ink. The percentage ink absorption was found to decrease with higher degree of cure. In addition, through desorption measurements, ink induced swelling of PUA processed under different conditions was determined. The degree of swelling per unit solvent uptake was observed to increase with the degree of cure. PUA was determined to be more prone to moisture rather than solvent uptake. However, the coefficient of moisture expansion (CME) was found to be ∼ 35% lower than the coefficient of ink expansion (CIE) for a fully cured PUA. © 2006 Wiley Periodicals, Inc. JAppl PolymSci 103: 1985–1991, 2007