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Citation: Yang Guang, Nie Delin, Zhang Lina. Polyurethane-Acrylate-Cellulose Composite Film Cured by UV Irradiation[J]. Chinese Journal of Applied Chemistry, ;1996, 13(4): 21-24. shu

Polyurethane-Acrylate-Cellulose Composite Film Cured by UV Irradiation

1.
Department of Chemistry, Wuhan University, Wuhan 4300723

Received Date: 6 October 1995
Available Online: 18 March 1996
Fund Project:

A composite film with water-resistance was prepared by curing polyurethane-acry-late on regenerated cellulose film (from bagasse pulp) under UV-irradiation. The structures of films were studied by IR and SEM. The water-resistance, mechanical properties, water vapor permeability and size stability of the films were measured.The experimental results showed that when polyurethane/arcylate is 40:55 by mass,the composite film prepared under 400 W UV irradiation for 5 min possesses dense surface structure and good mechanical properties. After being soaked in water,the tensile strength retained 90% that of dry film,the shrinkage and swelling were less than 2.5%,and the water vapor permeability was a quarter of that of uncured cellulose film. The water-resistance and size stability of the composite film were improved significantly.In addition,its transmittance in visible range is 80%~90% and it can shield UV light.
- polyurethane,
- regenerated cellulose,
- composite film,
- UV curing,
- water-resistance
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