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

Abstract

<jats:title>Abstract</jats:title><jats:p>This 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.</jats:p>

Carboxylated gums as additives in the production of interpenetrating hydrogel beads and slow release of glimepiride

“…The degree of O ‐carboxymethyl substitution was calculated following the methods reported earlier. [ 22,33,34 ] Briefly, the sodium form of carboxymethyl gum was converted to hydrogen form and then the hydrogen form of the gum was dissolved in standardized sodium hydroxide solution. The solution was then back titrated with standardized HCl to a phenolphthalein end‐point.…”

Modified guar gum: An alternative source for printing of cotton fabric with reactive dye

“…Commercial alginate thickener was comparable in terms of penetration, fixing ability, and colour fastness. These first findings revealed that GG might be employed as a green, not dangerous, cost‐effective, and environmentally friendly thickener in textile printing 17 …”

“…It is grown from the grains of yearly leguminous plants that thrive in India, Pakistan, Iran, and also the southern United States 11 . As a result, guar and its derivatives have a wide range of commercial and industrial applications in water treatment, 12,13 drug delivery system (DDS), 14,15 solar cells 16 and textiles 9,17,18 …”

“…11 As a result, guar and its derivatives have a wide range of commercial and industrial applications in water treatment, 12,13 drug delivery system (DDS), 14,15 solar cells 16 and textiles. 9,17,18 Non-modified and native GG contains a significant number of hydroxyl groups that form a complicated crosslinking with the dye, preventing the printing paste from being quantitatively rinsed off the fabric. 1 Hence, it is essential to change the native GG to reduce the reactive activity of hydroxyl groups.…”

“…These first findings revealed that GG might be employed as a green, not dangerous, cost-effective, and environmentally friendly thickener in textile printing. 17 In this study, natural polysaccharide GG was creatively and innovatively modified with three materials: H 2 O 2 , sodium hydroxide and sodium hypochlorite, and then used as a thickener in the printing of reactive dyed cotton fabric. The main purpose of this research is to introduce safe, cheap and abundant GG as an alternative thickener in the textile industry.…”