Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 111, Issue 3, Pages 1391-1399Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/app.28978
Keywords
morphology; compatibility; dispersion; nanoindentation
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Epoxy and epoxy acrylates with phthalimide groups on the main chain or pendent side chain were synthesized and used as binders for solvent-free UV-curable inks. Effects of chemical Structures on the solubilities of binders in monomers, together with the influences of shear force and ink compositions on the morphology and nanoindentation properties of the microstripes Were Studied. PIK1 inks containing BAPSBD epoxy with phthalimide groups On the main chain showed shear-thinning behaviors and pigment aggregation problems. Variations of the shear stress at different positions of the dispenser led to PIK1 microstripes with rough central regions and smoother edges. AMPDP acrylate with pendent phthalimide side chain afforded not only good Solubility in monomers but also good thermal and mechanical properties after Curing. Stripes prepared by the PIK2 ink containing AMPDP exhibited straight edge and smooth surface. Considering the solubility and compatibility in inks, together with properties Of Cured stripe, binders with pendent phthalimide groups are better candidate as UV-curable ink compositions than those with main chain phthalimide groups. (c) 2008 Wiley Periodicals, Inc. J Appl 111 1391-1399, 2009
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