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Progress in Color, Colorants and Coatings، جلد ۱۴، شماره ۳، صفحات ۱۹۹-۲۰۷
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عنوان انگلیسی Tri-functional Bio-friendly Cross-linker for UV-Curable Coatings: Synthesis and Study of Viscoelastic Properties
چکیده انگلیسی مقاله Protection of the environment and keeping it from contaminants are critical issues. Polymers and oil-based plastics are unrenewable and entail a wide range of environmental pollution due to the long degradation. This study aims to synthesize bio-based coatings using natural substances, and evaluate their viscoelastic properties. Accordingly, first, UV-curable tri-functional castor oil-based waterborne urethane acrylate as a bio-friendly cross-linker was synthesized. Next, different weight percentages of the synthesized cross-linker were added to the UV-curable urethane acrylate resin, followed by UV radiation exposure to prepare, different flexible composite coatings. FT-IR spectroscopy was used to examine the progress of the cross-linker synthesis. The particle size analysis confirmed the stability and homogeneous distribution of the cross-linker particles in the emulsion. By DMTA analysis, viscoelastic characteristics of the films were studied. As a result, adding specific weight percentages of cross-linkers to the polymer matrix caused an increase in storage modulus and improvement of Tg of the coatings. The cross-link density of the film coatings was estimated from DMTA. The more weight percent of the cross-linker, the more is the cross-link density.
کلیدواژه‌های انگلیسی مقاله UV-curable urethane acrylate, cross-linker, bio-friendly, Viscoelastic Properties, Cross-link density
نویسندگان مقاله A. Madhi |
Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran.

B. Shirkavand Hadavand |
Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran.

نشانی اینترنتی http://pccc.icrc.ac.ir/article_81713_80d076bc1821632e6e840cba1f8e1771.pdf
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