Aggregation of o,o′-dihydroxyazo dyes–1. Concentration, temperature, and solvent effect

Dakiky, M.; Němcová, I.

doi:10.1016/s0143-7208(98)00037-0

Cited by 50 publications

(26 citation statements)

References 24 publications

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“…The Nylonfabric (2g) was wetted and immersed in the dyebath at 45 0 C. The bath temperature was then raised to 102 0 C over 15 minutes and maintained for 30 minutes. At this temperature formic acid (1.5 ml of 10 %), was added to the dyebath to achieve good exhaustion 12 . After cooling of the dyebath, the dyed fabric was rinsed and reduction-cleared twice with Iodet T (2 g/l) in a bath containing water (material to liquot 1:2) at 46 0 C for 15 minutes followed by washing thoroughly with cold water and drying in air.…”

Section: Dyeing Of Nylon 66mentioning

confidence: 99%

Dis-azo Dyes Derived from 2-methoxy-5-nitroaniline and 3-chloroaniline and their Application on Polymer Fibres

Otutu¹

2012

Orientjchem.

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Section: Dyeing Of Nylon 66mentioning

confidence: 99%

Dis-azo Dyes Derived from 2-methoxy-5-nitroaniline and 3-chloroaniline and their Application on Polymer Fibres

Otutu¹

2012

Orientjchem.

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“…It is found that CR, like many azo dyes [29][30][31][32][33], has a strong tendency to aggregate. As shown by the UV-Vis spectral changes of CR in its small concentration (3.5×10 -5 M), CR molecules form face-to-face aggregates with zero or very little offset [34].…”

Section: Adsorption Of Cr On Cellulosementioning

confidence: 99%

Kinetics and thermodynamics of adsorption of congo red on cellulose

Samiey

Dargahi

2010

Open Chemistry

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Thermodynamics and kinetics of adsorption of congo red (CR) on cellulose are studied at 308-328 K. In the used concentration range of CR, interaction of CR with cellulose is exothermic and CR molecules adsorb chemically on cellulose surface. The effects of contact time, temperature and initial concentration of CR on kinetics of its adsorption on cellulose were investigated. The process proceeds according to the pseudo-second-order equation. Initial adsorption rate of adsorption is first-order in CR and the intraparticle diffusion of CR molecules within cellulose is identified as the main rate-limiting step.

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“…At high concentrations, the third region is observed due to molecular association on the surface [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of triton X-100 on silica gel: effects of temperature and alcohols

Samiey

Golestan

2010

Open Chemistry

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Adsorption of Triton X-100 (TX-100) on silica gel has been studied as a function of temperature (308-328 K) and composition for mixtures of water with ethanol or t-butanol. The adsorption capacity of silica gel for TX-100 decreases with increase in alcohol content. Adsorption isotherms of TX-100 on silica gel are four-region and were analyzed using the ARIAN (adsorption isotherm regional analysis) model. Data in regions 2, 3 and 4 were fitted to the Temkin, bilayer and reverse desorption isotherms, respectively. The results show that adsorption of TX-100 on silica gel in water and alcohol-water binary mixtures occurs mainly through formation of monolayer surface aggregates or low bilayer coverage. © Versita Sp. z o.o.

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Aggregation of o,o′-dihydroxyazo dyes–1. Concentration, temperature, and solvent effect

Cited by 50 publications

References 24 publications

Dis-azo Dyes Derived from 2-methoxy-5-nitroaniline and 3-chloroaniline and their Application on Polymer Fibres

Dis-azo Dyes Derived from 2-methoxy-5-nitroaniline and 3-chloroaniline and their Application on Polymer Fibres

Kinetics and thermodynamics of adsorption of congo red on cellulose

Adsorption of triton X-100 on silica gel: effects of temperature and alcohols

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