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 as-prepared 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.Graphical abstract
Highlights
Cellulose-based material has been widely applied in many areas, since cellulose is regarded to be the most abundant biomass material and it possesses various interesting properties, such as good mechanical strength and excellent hydrophilicity (Hearle 2002; Moon et al 2011)
The most important reaction is the methylolation of the amino groups by means of formaldehyde resulting in the formation of a melamine resin, a durable thermosetting plastic (Fink 2005)
Melamine was reacted with hydrolyzed TESP-SA at various molar TESP-SA/MEL ratios (3/ 1, 2/1, 1/1)
Summary
Cellulose-based material has been widely applied in many areas, since cellulose is regarded to be the most abundant biomass material and it possesses various interesting properties, such as good mechanical strength and excellent hydrophilicity (Hearle 2002; Moon et al 2011). The anhydroglucose unit of cellulose has three hydroxyl groups. The application of cotton is limited because of its tendency to produce creases. This fact can be attributed to the phenomenon that cellulose chains within the cotton fibers are held in place by intermolecular hydrogen bonds which are formed between the hydroxyl groups of adjacent molecules. Under the influence of deformation or moisture the hydrogen bonds are broken and reformed at a new location. To minimize this phenomenon crosslinking between the cellulose chains are formed applying various chemical agents
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