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

被引：26

作者：

Beltrame, PL

Castelli, A

Selli, E

Villani, L

Mossa, A

Seves, A

Testa, G

机构：

[1] Univ Milan, Dipartimento Chim Fis & Elettrochim, I-20133 Milan, Italy

[2] Fedegari Autoclavi SpA, I-27010 Albuzzano, PV, Italy

[3] Stn Sperimentale Cellulosa Carta Fibre Tessili Ve, I-20133 Milan, Italy

来源：

DYES AND PIGMENTS | 1998年 / 39卷 / 01期

关键词：

poly(ethylene terephthalate); 2,5-cellulose diacetate; supercritical carbon dioxide; morphological changes; dye uptake;

D O I：

10.1016/S0143-7208(98)00006-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The dyeing process of poly(ethylene terephthalate) (PET) and 2,5-cellulose diacetate (CA) fibers at 40-100 degrees C using supercritical carbon dioxide (CO2SCF) as solvent system has been kinetically investigated in relation to the morphological modifications induced by the CO2SCF 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 CO2SCF and in hot air evidenced that CO2SCF has a plastifying action towards PET by lowering its T-g value to 0-5 degrees C and thus favoring the dyeing process at loll, temperature. Such effect was not observed with CA. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：35 / 47

页数：13

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