Study of the Hydrophobic Modification of Chromium Sesquioxide with Lauric Acid

Shuang Luo; Ji Chuan Huo; Hong Lei; Jun Deng

doi:10.4028/www.scientific.net/AMR.535-537.1586

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 535-537Study of the Hydrophobic Modification of Chromium...

Study of the Hydrophobic Modification of Chromium Sesquioxide with Lauric Acid

Abstract:

The surface modification of chromium sesquioxide with lauric acid was investigated, and the optimum technical condition was obtained according to the activation indexes of products, i.e. 1% of modifier in weight，70°C in temperature and 40 minutes in time. Contact angle, FT-IR, XRD and particle size distribution were conducted on both unmodified and modified chromium sesquioxide. The results indicate that lauric acid molecules are adsorbed on the surface of chromium sesquioxide chemically and new bonds formed. The surface modification does not destroy the crystal structure of chromium sesquioxide even though the particle size of chromium sesquioxide is reduced from 4.01μm to 2.71μm. The contact angle of the modified chromium sesquioxide with water is 143 °, which indicates that the surface of the chromium sesquioxide changes from hydrophilic to hydrophobic.

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Periodical:

Advanced Materials Research (Volumes 535-537)

Pages:

1586-1590

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.535-537.1586

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Online since:

June 2012

Authors:

Shuang Luo, Ji Chuan Huo, Hong Lei, Jun Deng

Keywords:

Chromium Sesquioxide, Lauric Acid, Mechanism, Surface Modification

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