Printing properties of a high substituted guar gum and its mixture with alginate

Nazir

Green Processing and Synthesis

et al. 2020

AbstractThis study focusses on the synthesis of carboxymethyl guar gum (CMG) via monochloroacetic acid under alkaline conditions. The reaction conditions were also optimized during the course of experiment. Guar derivative with variable degree of substitution (DS) were prepared and were confirmed by Fourier transform infrared (FTIR) spectroscopy. The DS was determined quantitatively by titration method for each derivative. The synthesized guar gum derivatives, being the natural thickners, have been used in textile printing technology. Substituted guar gum has been proved environmental friendly thickener as compared to synthetic thickeners. Penetration properties, fixation ability, colour fastness, levelness and fabric handling was compared with alginate thickener (commercially available). Guar gum thickeners showed enhanced properties versus alginate thickener and can be used as an alternative to synthetic thickeners in view of its green, non-hazardous and economical derivatives. Guar gum is the outstanding natural thickener, stabilizer, gelling agent and could possibly be used in various industrial units including food, cosmetic, textile, oil fracturing and mining.

Section: Introductionmentioning

confidence: 99%

Green synthesis and characterization of carboxymethyl guar gum: Application in textile printing technology

Nazir

Green Processing and Synthesis

et al. 2020

“…Kumbasar and Bide studied the rheology and printability of binary mixtures with three anionic thickeners, alginate, carboxymethyl starch, and modified polyacrylic acid. Šostar‐Turk and Schneider investigated the printing properties of mixed thickeners from highly substituted guar gum and sodium alginate. Rekaby et al .…”

Section: Introductionmentioning

confidence: 99%

Rheological studies of mixed printing pastes from sodium alginate and modified xanthan and their application in the reactive printing of cotton

Wang

Liu

Yang

et al. 2014

Coloration Technology

The rheology of printing pastes using sodium alginate and modified xanthan as mixed thickeners has been measured by steady shear tests and dynamic strain sweep tests. The rheological results showed that, with a small addition of modified xanthan to sodium alginate, the flowability of the mixed printing pastes was better than that with sodium alginate alone. Subsequently, as the addition of modified xanthan increased, the apparent viscosity at low shear rates increased gradually, and the mixed printing pastes gained increasingly pronounced shear‐thinning features. In addition, the mixed printing pastes with more sodium alginate exhibited mainly viscous behaviour under strain, and the liquid‐like features became increasingly weak with the addition of modified xanthan. On the other hand, the mixed printing pastes with more modified xanthan exhibited mainly elastic behaviour within the linear viscoelastic region, and the solid‐like features became increasingly marked with the addition of modified xanthan. Mixtures of sodium alginate and modified xanthan can be used as thickeners in the reactive printing of cotton, producing a good colour yield, levelness, and outline sharpness. In particular, for large patterns, the mixed printing paste performed best when the ratio of sodium alginate to modified xanthan was 80:20; for fine patterns, it performed best when the ratio of sodium alginate to modified xanthan was 20:80.

J of Applied Polymer Sci

“…Alginates are regarded as the only natural thickener suitable for use in printing with reactive dyes. [1][2][3][4][5][6][7] All other carbohydrates react with the reactive dyes, resulting in low color yield.…”

Section: Introductionmentioning

confidence: 99%

Polymerization products of acrylic acid with Gleditsia triacanthos gum as thickeners for reactive printing

Hebeish¹,

Ragheb²,

Nassar³

et al. 2006

Glactomannan gum was isolated from Gleditsia triacanthos seeds. It was then subjected to polymerization with acrylic acid using potassium persulfate initiation system. Products of the polymerization reactions are referred to as composites. Technical evaluation of the latter as thickening agent in reactive printing using cotton fabric was studied. The use of composite in printing cotton fabric with natural dye was also studied. It was found that the composite pastes are characterized by a non-Newtonian pseudoplastic behavior, and their apparent viscosity increases on increasing the concentration of acrylic acid. The composite can be diluted by water and its viscosity increases by neutralization. Printing pastes of the composite are very stable for storing, in contrast with those of natural gum which exhibit no stability for storing. It was also found that reactive prints thickened with the composite display relatively higher K/S than those thickened with native gum do. Meanwhile, K/S values of prints thickened with the composite are comparable with the values of those thickened with sodium alginate. Printed fabrics using the composite as a thickener exhibit soft handle, and their overall fastness properties are almost equal to, if not higher than, the properties of those printed using sodium alginate. On the other hand, printing of cotton fabric with a natural dye using the composite as a thickener results in prints with K/S values lower than those obtained using commercial synthetic thickener; but the overall fastness properties are nearly the same.