Codiluent effect on the properties of UV-cured films

✍ Scribed by Mubarak A. Khan; K. M. Idriss Ali; M. M. Zaman; M. A. Hossain

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 601 KB
• Volume: 57
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1995.070570807

✦ Synopsis

Different formulations were developed with an urethane oligomer combined with a number of reactive diluents with different functionalities such as N-vinylpyrrolidone (monofunctional), butanediol diacrylate (difunctional), tripropylene glycol diacrylate (difunctional), and trimethylolpropane triacrylate (trifunctional). The films were prepared with these formulations and cured under UV radiation in the presence of the photoinitiator Irgacure 184. Their properties were characterized. The effect of codiluents of low glass transition temperatures like ethyl hexyl acrylate and methoxyethyl acrylate on the properties of these films was studied. These formulations were then applied as thin coatings on the leather surface in order to study the improvement of the leather substrate. Both tensile strength and elongation of the treated leather increased. The gloss of the coated leather was also enhanced. Incorporation of a plasticizer into these systems substantially improved the rheological properties of the coated leather.