Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (8): 1418-1421.doi: 10.3969/j.issn.1673-8225.2010.08.021

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Effect of surface modification on anti-fogging and anti-reflection of optical glasses

Li Jian, Liu Jia-yi, Zhang Yang-de   

  1. Hepatobiliary & Enteric Surgery Research Center, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
  • Online:2010-02-19 Published:2010-02-19
  • Contact: Zhang Yang-de, Doctor, Professor, Hepatobiliary & Enteric Surgery Research Center, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
  • About author:Li Jian☆, Doctor, Associate professor, Hepatobiliary & Enteric Surgery Research Center, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China liujiayi_2001_0@sohu.com
  • Supported by:

    the National High Technology Research and Development Program of China (863 Program), No. 2007AA021907*

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Abstract:

BACKGROUND: The polarity and the layer-by-layer coating method which are utilized to improve the membrane surface of optical glasses is a new focus for researching in the world.
OBJECTIVE: To prepare a stable hydrophilic anti-fogging coating by surface modification.
METHODS: Hydrophilic anti-fogging coatings of complexes of polyacrylic acid (PAA), cationic polyacrylamide (CPAM) and sodium silicate were fabricated by layer-by-layer coating method. Subsequently, the stable multilayer films were obtained by thermal torrefaction. Then the transmittance, hydrophilicity, and hardness were tested.
RESULTS AND CONCLUSION: In the wavelength coverage of 200 nm, the transmittance of the anti-fogging coatings was above 92.9%. In the wavelength coverage of 700-800 nm, the transmittance reached 98.1%, suggesting that the membrane had the good transmittance. Water drop dispersed completely after 230 ms when it contacted with the surface of the multilayer films, suggesting that it had the good hydrophilicity. The hardness of stable films structure was 4 H. The layer-by-layer coating method was simple and favorable for preparing the anti-fogging coatings with good product properties including good stability, anti-fogging function and the improved transmittance.