Synthesis and properties of s-triazine di-sulfanilic guar gum as a thickener in reactive printing

Abstract

S-triazine di-sulfanilic guar gum (TSG) was successfully prepared by monochlorotriazine di-sulfanilic (TS) and guar gum (GG) in order to improve the printing properties in reactive printing. The results showed that the optimized synthesis condition of TSG was at sodium carbonate solution 1.2 g/L at 90℃ for 75 min through the single-factor experiment. Compared to GG, TSG had better flowability, mainly viscous effects and higher viscosity recoverability, which was more appropriate as a thickener in reactive printing. In the cotton printing experiment, TSG had higher paste add-on, color yield, penetration and levelness than GG. Furthermore, the printing effects of TSG on cotton drew near to those of sodium alginate, which could obtain evenly colored large patterns and excellent outline sharpness.

New thickener based on s-triazine di-sulfanilic xanthan for reactive printing of silk fabric with double-sided patterns

“…These flow characteristics of the thickener contributed to the homogenous distribution of the printing pastes on the screen and the successful flow through the screen openings under shears. 6 The flow behaviors of XG were well described by the Power-law model, which was consistent with the literature. 15 However, the Cross model 16,17 should be used to depict the flow behaviors of TDG with accuracy.…”

“…The after-treatments were as follows: the squared samples were steamed in a high temperature steam oven (DHE, Mathis, Switzerland) at 102 C for 10 min, then soaped in boiling water with bath ratio 1:50 at 95 C for 10 min to remove the thickener and unfixed dyes. 6…”

“…11,14 The PR was higher than 85%, indicating the high penetrability of the thickener. The color variation coefficient (CVC) of the printed sample was calculated for 13 K/S values of the face of the printed square samples as follows: 6 CVC ð%Þ¼ ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi 1 12…”

“…The thickener used in reactive printing must possess little reaction with reactive dyes to ensure a high dye transfer rate. 6 The thickeners selected in most cases are polysaccharides and their derivatives with high molecular weight. 7 Currently sodium alginate (SA) is the most widely used thickener in reactive printing owing to the mutual ionic repulsion between the alginate's carboxylate group and the dye's sulfonic acid groups.…”

Application of Modified Xanthan as Thickener in the Printing of Natural and Synthetic Fabrics

“…Using a laboratory printing device, the exquisite designs were printed on silk cloth. All printed samples were dried for two minutes at 80 C. The squared samples were then steamed in a high-temperature steam oven for 10 minutes at 102 C. They were then immersed in boiling water with a bath ratio of 1:50 for 10 minutes at 95 C. to remove the thickener and unfixed dyes [42].…”