If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Surface Characterization of Gamma-Iron Oxides for Magnetic Memory Media Using Fourier Transform Infrared Photoacoustic Spectroscopy

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

The interaction of gamma-iron oxide powder with several substances (silica, stearic acid, stearylamine, and polyurethane resin) was investigated with the use of Fourier transform infrared photoacoustic spectroscopy. The stearic acid was found to be chemisorbed onto the gammairon oxide surface through the carboxyl group and then dissociated the proton of the carboxyl group. It was also suggested that the stearylamine was chemisorbed onto the surface of the gamma-iron oxides through the NH2 group. In the case of polyurethane, a lower shift of the C=O stretching band and a decreasing of the relative absorption intensity of the NH deformation band were observed, indicating that a chemical interaction between the polyurethane resin and the oxides had occurred. The adsorption sites of these substances on the gamma-iron oxide were also considered.

Keywords: Adsorption; FT-IR; Gamma-iron oxide; Photoacoustic spectroscopy; Polyurethane; SiO2; Stearic acid; Stearylamine

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702924926934

Affiliations: 1: Analytical Center, Konica Corporation, No. 1 Sakura-machi, Hino-shi, Tokyo 191, Japan 2: Recording Material Laboratory, Research and Development Center, Konica Corporation, No. 1 Sakura-machi, Hino-shi, Tokyo 191, Japan

Publication date: November 1, 1992

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more