TY - JOUR
T1 - Preparation and application of a β-cyclodextrin-disperse/reactive dye complex
AU - Parlati, Stefania
AU - Gobetto, Roberto
AU - Barolo, Claudia
AU - Arrais, Aldo
AU - Buscaino, Roberto
AU - Medana, Claudio
AU - Savarino, Piero
N1 - Funding Information:
Acknowledgments This work was supported by a contribution from the Ministero dell’Istruzione, dell’Università e della Ric-erca and Università di Torino (ex 60% funds). The authors thank Wacker-Chemie GmbH for cyclodextrins kindly supplied and Compagnia di San Paolo and Fondazione Cassa di Risparmio for supplying laboratory equipment.
PY - 2007/4
Y1 - 2007/4
N2 - A disperse and a disperse/reactive azo-dyes were prepared and characterised with spectroscopic methods. The complexes with β-cyclodextrin were prepared by a dry milling method. The characterisation of the complexes in solid state was performed by 13C CP MAS NMR, FT-IR, Raman spectroscopies and TGA-DTA analysis. The presence of the complexes in solution was evidenced with ESI-MS experiments. The products were used to dye synthetic (nylon, PET), natural (cotton) and cotton-PET blend fibres. Colour intensity and uniformity were evaluated by means of tristimulous colorimetry. β-Cyclodextrin, used as additive in dyeing baths, enhanced the colour intensity and uniformity of dyed samples. The complexes gave rise to a generalised good result. The disperse/reactive dye showed better fastness to washing properties on nylon 6 and cotton fibres. β-Cyclodextrin easily substituted the surface active agents, normally used in industrially dyeing processes, without loss in dyeing quality as dyeing uniformity, intensity and washing fastness.
AB - A disperse and a disperse/reactive azo-dyes were prepared and characterised with spectroscopic methods. The complexes with β-cyclodextrin were prepared by a dry milling method. The characterisation of the complexes in solid state was performed by 13C CP MAS NMR, FT-IR, Raman spectroscopies and TGA-DTA analysis. The presence of the complexes in solution was evidenced with ESI-MS experiments. The products were used to dye synthetic (nylon, PET), natural (cotton) and cotton-PET blend fibres. Colour intensity and uniformity were evaluated by means of tristimulous colorimetry. β-Cyclodextrin, used as additive in dyeing baths, enhanced the colour intensity and uniformity of dyed samples. The complexes gave rise to a generalised good result. The disperse/reactive dye showed better fastness to washing properties on nylon 6 and cotton fibres. β-Cyclodextrin easily substituted the surface active agents, normally used in industrially dyeing processes, without loss in dyeing quality as dyeing uniformity, intensity and washing fastness.
KW - Azodyes
KW - C CP MAS NMR
KW - Dyeing
KW - ESI-MS
KW - FT-IR
KW - Raman spectra
KW - TGA-DTA
KW - Tristimulus Colorimetry
KW - β-Cyclodextrin complexes
UR - http://www.scopus.com/inward/record.url?scp=34047101804&partnerID=8YFLogxK
U2 - 10.1007/s10847-006-9235-6
DO - 10.1007/s10847-006-9235-6
M3 - Article
SN - 0923-0750
VL - 57
SP - 463
EP - 470
JO - Journal of Inclusion Phenomena and Macrocyclic Chemistry
JF - Journal of Inclusion Phenomena and Macrocyclic Chemistry
IS - 1-4
ER -