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Photodestruction of poly(vinyl chloride). II. Influence of monochromatic ultraviolet radiation on physical properties of polymer

L. Lapčík, J. Štefanec, J. Valášek, M. Čeppan, A. Blažková, and J. Polavka

Department of Textile, Pulp, and Paper, Slovak Technical University, 880 37Bratislava

 

Abstract: The photooxidative degrdn. of poly(vinyl chloride) (I)   by monochromatic radiation of 405 ± 10 nm wavelength in air was studied at 25°. The effects of the exposure on phys. properties of I film were examd.: the limiting angle of wetting, surface energy, glass temp. (Tg), absorption in the UV, visible, and IR regions, gel fraction, and mol. wt. of the sol. fraction of the exposed sample were detd. The hydrophilicity of the surface of the sample, absorption in the UV and IR regions, and gel fraction content increased with exposure time of I, while Tg and the mol. wt. of the sol. fraction decreased.

Full paper in Portable Document Format: 353a359.pdf

 

Chemical Papers 35 (3) 359–371 (1981)

Monday, January 18, 2021

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