Formaldehyde-free, crease-resistant functionalization of cellulosic material modified by a hydrolyzed dicarboxylic acid based alkoxysilane/melamine finishing system

Abstract

Cotton fabrics show the tendency to wrinkle. Various chemical agents have been used to convey crease-resistance to cellulosic material in an attempt to replace the formaldehyde-releasing crosslinking agent DMDHEU. A novel non-formaldehyde organic-inorganic hybrid material synthesized via the sol-gel route is investigated. The hydrolyzed trialkoxysilane (3-triethoxysilylpropyl)succinic anhydride was reacted with 2,4,6-triamine-1,3,5-triazine (melamine, MEL) at elevated temperature. The asprepared aqueous solutions were applied to cotton fabrics, which were cured at 160°C and 220°C. The physicomechanical data: dry crease recovery angle (DCRA), flexural rigidity, whiteness index (WI), water retention, water vapor permeability were evaluated. An increase in the DCRA can be observed. However, the thermal treatment results in a reduction of the WI. Fourier transform infrared spectroscopy spectra confirm the formation of an imide group. X-ray powder diffraction analysis makes evident that the crystallinity index increased. SEM images make evident that depositions can be observed on the surface.

Copper nanoparticles induced, trimesic acid grafted cellulose–an effective, non-hazardous processing approach for multifunctional textile with low chemical induction

“…5c. The diffraction peaks in the untreated sample (control) at 14.6°, 16.6 o , and 22.4 o present the (110), (110), and (200) crystalline planes of cotton (cellulose-I) respectively, whereas, peak at 34.4°is subjected to (004) plane (Schramm and Amann 2019). The roughly similar cellulose-I peaks in treated samples show that the internal crystallinity of the treated samples is not affected in the finishing process.…”

Established an eco-friendly cotton fabric treating process with enhancing anti-wrinkle performance

“…[7][8][9][10][11][12][13] However, this kind of N-methylol compounds would release cancerogenic and toxic formaldehyde. [14][15][16] Thus, environmental concerns have given the pressure to develop more eco-friendly crosslinking agents. The polycarboxylic acids, such as 1,2,3,4-butanetetracarboxylic acid (BTCA), maleic acid (MA), and citric acid (CA), are some of the most promising formaldehyde-free compounds and have been extensively studied for decades.…”

Investigation of the effect of different process variables on color and physical properties of viscose and cotton knitted fabrics

“…A linear polymer cellulose encompass the repeating unit D-anhydroglucose joined together by β (1–4) glycosidic linkages. The anhydroglucose unit of cellulose has three free hydroxyl groups that make cellulose fiber more absorbent and facilitates easily swelling during wet processing [ 6 , 8 ]. A distinctive form of cellulosic fiber is shown in Figure 1 .…”