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Citation: ZHANG Yan-Qi, HUA You-Qing. Optical Behaviour of LLDPE/Nano-silica Film[J]. Chinese Journal of Applied Chemistry, ;2003, 20(7): 638-642. shu

Optical Behaviour of LLDPE/Nano-silica Film

ZHANG Yan-Qi ,
HUA You-Qing ^,

1.
College of Materials Science & Engineering, Beijing University of Chemical Technology, Beijing 100029

Corresponding author: HUA You-Qing,
Received Date: 28 October 2002
Available Online: 16 May 2003
Fund Project: 中国石油化工股份有限公司基础研究基金资助项目(X500007) (X500007)

An agricultural film composed of LLDPE and nano-silica has been prepared and characterized by FTIR, UV-Vis spectrophotometry and haze value measurement. The film shows good ability to absorb infrared light ranged from 7 μm to 11 μm and ultraviolet below 300 nm. For example, the IR absorptivity of film containing 9.1%(mass fraction) nano-silica was 58%, nearly 3 times that of the pure LLDPE film. Increase of the content of nano-silica powder significantly led to the increase of the haze value of the film,but little changed the visible light transmittance. The surface-treatment method of nano-SiO₂ has great influence on the optical properties of the composites film.
- LLDPE,
- nano-silica,
- agricultural film,
- optical behaviour
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