Influence of counter-ions on antifogging coatings
Name
259101691-MIT.pdf
Description
Full printable version
Size
16.98 MB
Format
Adobe PDF
Checksum (MD5)
1328b0c3b53975e551ae57c397789f72
Author(s)
Sundareshan, Shashank
Advisor(s)
Michael F. Rubner.
Date Issued
2008
Publisher
Massachusetts Institute of Technology
Abstract
The influence of different counter-ions on the superhydrophilic and antifogging behavior of polyelectrolyte multilayers was examined. Multilayers assembled with a polymer anion and amine-modified silica nanoparticles were treated with salt solutions of monovalent and divalent cations. Refraction index of the films dropped significantly when treated with monovalent cations, and increased when treated with divalent cations. It has been found that the refraction index decrease in films treated with monovalent salts may be correlated with porosity increase in treated films, and this porosity increase in turn linked with an increase in hydrophilicity. Polyelectrolyte films have yet to show long-lasting antifogging properties on the commercially valuable polycarbonate, but monovalent cations may have improved the longevity of antifogging properties of the multilayer on polycarbonate, and warrant further study.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, June 2008.
"May 2008."
Includes bibliographical references.
Subjects
Materials Science and Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
Persistent DSpace Link
