Paper making and fiber liberation – Processes and products – Safety – identification and fraud preventing paper
Reexamination Certificate
2007-02-07
2010-10-26
Fortuna, José A (Department: 1791)
Paper making and fiber liberation
Processes and products
Safety, identification and fraud preventing paper
C162S162000, C162S177000, C283S072000, C428S199000
Reexamination Certificate
active
07820009
ABSTRACT:
Polymer composite films were prepared by solvent casting suspensions of quantum dots (QDs) in cellulose triacetate (CTA) solution. The films were robust and possessed the optical properties characteristic of QDs. Transmission electron microscopy (TEM) images of the films revealed that the QDs were well dispersed within the CTA film matrix. The selective alkaline hydrolysis of QD/CTA films in 0.1N NaOH over 24 hours resulted in the surface conversion of CTA to regenerated cellulose. Optical properties of the films were probed both before and after the hydrolysis reaction using fluorescence spectroscopy, and were found generally unaltered. The cellulose surfaces of the alkaline treated films allow for facile incorporation of the films into paper sheets.
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Abitbol Tiffany
Gray Derek
Fortuna José A
Ogilvy Renault LLP
The Royal Institution for the Advancement of Learning/McGill Uni
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