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Title: Colored polymer microparticles through carbon dioxide-assisted dyeing

Abstract

A new procedure is described for dyeing polymer beads using liquid carbon dioxide as a plasticizer to facilitate transport of dye into the particle phase. Aqueous latexes consisting of monodisperse polystyrene particles with surface-grafted poly(N-vinylpyrrolidone) were dyed with Sudan Red 7B using CO{sub 2} at 25 C and 310 bar. Adding CO{sub 2} to the headspace above the latex resulted in some dyeing of the polymer, but better results were obtained by forming an emulsion of CO{sub 2} in the aqueous latex phase. Emulsions were formed with both a fluorinated and a hydrocarbon-based surfactant. It was found that the carbon dioxide emulsion greatly enhances the transfer of dye into the polystyrene without altering the size or morphology of the particles.

Authors:
; ;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (US)
OSTI Identifier:
20080282
Resource Type:
Journal Article
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 16; Journal Issue: 11; Other Information: PBD: 30 May 2000; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; POLYSTYRENE; DYES; CARBON DIOXIDE; EMULSIONS

Citation Formats

Yates, M.Z., Birnbaum, E.R., and McCleskey, T.M. Colored polymer microparticles through carbon dioxide-assisted dyeing. United States: N. p., 2000. Web. doi:10.1021/la000049i.
Yates, M.Z., Birnbaum, E.R., & McCleskey, T.M. Colored polymer microparticles through carbon dioxide-assisted dyeing. United States. doi:10.1021/la000049i.
Yates, M.Z., Birnbaum, E.R., and McCleskey, T.M. Tue . "Colored polymer microparticles through carbon dioxide-assisted dyeing". United States. doi:10.1021/la000049i.
@article{osti_20080282,
title = {Colored polymer microparticles through carbon dioxide-assisted dyeing},
author = {Yates, M.Z. and Birnbaum, E.R. and McCleskey, T.M.},
abstractNote = {A new procedure is described for dyeing polymer beads using liquid carbon dioxide as a plasticizer to facilitate transport of dye into the particle phase. Aqueous latexes consisting of monodisperse polystyrene particles with surface-grafted poly(N-vinylpyrrolidone) were dyed with Sudan Red 7B using CO{sub 2} at 25 C and 310 bar. Adding CO{sub 2} to the headspace above the latex resulted in some dyeing of the polymer, but better results were obtained by forming an emulsion of CO{sub 2} in the aqueous latex phase. Emulsions were formed with both a fluorinated and a hydrocarbon-based surfactant. It was found that the carbon dioxide emulsion greatly enhances the transfer of dye into the polystyrene without altering the size or morphology of the particles.},
doi = {10.1021/la000049i},
journal = {Langmuir},
issn = {0743-7463},
number = 11,
volume = 16,
place = {United States},
year = {2000},
month = {5}
}