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Dyeing Kinetics and Colouristic Properties of Blend PP/PES Fibres

Bolhová E., Ujhelyiová A., Vaľková K., Marcinčin A.

Fibres & Textiles in Eastern Europe

2007

Vol. 15, no. 5-6 (64)

131--135

The aim of this work was the study of the dyeability of blended polypropylene/polyester (PP/PES) fibres. Blended PP/PES fibres contain various polyesters - polyethylene terephthalate (PET), polybuthylene terephthalate (PBT), polytrimethylene terephthalate (PTT) and a blend of these polyesters. The fibres were dyed with C.I. Disperse Blue 79 and C.I. Disperse Violet 95 at 98°C. The dyeing kinetics and colouristic properties of these fibres were investigated. In addition, the influence of different contents of individual PES was also studied.

Celem naszych badań była analiza wybarwień mieszanek włókien polipropylenowo-poliestrowych (PP/PES). Mieszanki włókien PP/PES zawierające różne proporcje włókien z polietylenu tereftalanu (PET), polibutylenu terftalanu (PBY), politrimetylenu tereftalanu (PTT) oraz mieszanek tych poliestrów przygotowano do badań. Włókna barwiono za pomocą barwników dyspersyjnych C.I. Disperse Blue 79 i C.I. Disperse Violet 95. Badano dynamikę procesu barwienia i właściwości kolorystyczne barwionych włókien. Dodatkowo analizowano wpływ składu mieszanek na otrzymane wyniki.

Study of the biodegradability of sodium salt from the condensation product of naphthalene sulphonic acids and formaldehyde

Ladhari N., Hayet G., Harrabi L.

Autex Research Journal

2005

Vol. 5, no. 2

113--119

The biodegradability of dispersants (naphthalenesulfonate formaldehyde condensates), used with disperse dyes, has been evaluated using different techniques such as chemical oxygen demand (COD), UV-spectroscopic analysis and tonometry. A biomass was used from industrial waste water which was acclimated for six months prior to use. The study has shown that biodegradation involves two steps: first, the cleavage of the CH2 bridges; second, the degradation of the aromatic nuclei. We identified a series of bacteria (Pseudomonas cepacia, Pseudomonas vesicularis, Pseudomonas stutzeri, Pseudomonas pichetti, Shevanella putrefacians, Agrobacterium radiobacter and Aeromonas hydrophila) that proved to biodegrade the dispersant very efficiently.