کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1269128 972440 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultrasonic preparation of cationic cotton and its application in ultrasonic natural dyeing
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Ultrasonic preparation of cationic cotton and its application in ultrasonic natural dyeing
چکیده انگلیسی

Cationization of cotton fabric was conferred by the sonicator reaction of cellulose with bromoacetyl bromide, followed by substitution of the terminal bromo groups by triethylamine. Experiments showed that the optimal volume of bromoacetyl bromide necessary to succeed the first stage was 0.4 mL. The order of weight gain for various processes indicates, ultrasound, 25 kHz > ultrasound, 40 kHz > mechanical stirring. Also, for the second stage the order of nitrogen contents indicates ultrasound, 25 kHz > ultrasound, 40 kHz > mechanical stirring. The structures of both untreated and cationic fibres were investigated by FTIR spectroscopy. Modified cotton fabric was subsequently dyed in both conventional and ultrasonic techniques with isosalipurposide dye isolated from Acacia cyanophylla yellow flowers. The effect of dye bath pH, ultrasonic power and frequency, dyeing time and temperature were studied and the order of K/S values indicates ultrasound, 25 kHz > ultrasound, 40 kHz > CH. ultrasound was also found to enhance the dye uptake and the overall fastness properties. Analysis of the sorption isotherms of isosalipurposide dye on cationic cotton fabric shows that the Languimir isotherm equation is best able to correlate the data.


► We propose the sonicator preparation of cationic cotton as a more efficient method.
► We investigate the deability of modified cotton fabris with isosalipurposide dye.
► The fastness properties, the kinetics and the isotherms of dyeing were investigated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 20, Issue 1, January 2013, Pages 571–579
نویسندگان
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