Morphological changes and dye uptake of poly(ethylene terephthalate) and 2,5-cellulose diacetate immersed in supercritical carbon dioxide

Pier Luigi Beltrame; Antonella Castelli; Elena Selli; Luca Villani; Andrea Mossa; Alberto Seves; Giovanni Testa

doi:10.1016/S0143-7208(98)00006-0

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Morphological changes and dye uptake of poly(ethylene terephthalate) and 2,5-cellulose diacetate immersed in supercritical carbon dioxide

Beltrame, Pier Luigi; Castelli, Antonella; Selli, Elena; Villani, Luca; Mossa, Andrea; Seves, Alberto; Testa, Giovanni

Follow Dyes and Pigments , Volume 39 (1) Elsevier – Jul 31, 1998

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$The dyeing process of poly(ethylene terephthalate) (PET) and 2,5-cellulose diacetate (CA) fibers at 40–100°C using supercritical carbon dioxide (CO 2 SCF) as solvent system has been kinetically investigated in relation to the morphological modifications induced by the CO 2 SCF treatment in these fibers, determined through DSC, X-ray diffraction, SEM analysis and shrinkage measurements. A comparison between the effects of annealing both polymer fibers in CO 2 SCF and in hot air evidenced that CO 2 SCF has a plastifying action towards PET by lowering its T g value to 0–5°C and thus favoring the dyeing process at low temperature. Such effect was not observed with CA.$

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Title: Morphological changes and dye uptake of poly(ethylene terephthalate) and 2,5-cellulose diacetate immersed in supercritical carbon dioxide
Author(s): Beltrame, Pier Luigi; Castelli, Antonella; Selli, Elena; Villani, Luca; Mossa, Andrea; Seves, Alberto; Testa, Giovanni
Journal: Follow Dyes and Pigments , Volume 39 (1) Elsevier – Jul 31, 1998
Publisher: Elsevier
ISSN: 0143-7208
D.O.I.: 10.1016/S0143-7208(98)00006-0
Publisher site: Get PDF