Effect of fixation conditions on yellowing behavior of cellulose powder–coated fabrics

Abstract

In this study, the yellowing behavior of cellulose powders, which is applied to pretreated polyester woven fabrics with concentrations of 100 g/kg by knife coating technique, was investigated. After drying process, coated fabrics were cured at different conditions to determine the effects of the curing temperature and time on yellowing behaviors. The yellowness-whiteness of coated fabrics was measured with a spectrophotometer according to ASTM E313. As the curing temperature and time increase, yellowing effect was more observable. However, the effect of temperature increase is found to be more significant than the increase in curing duration in terms of more observed yellowness. In order to investigate the reason of yellowing, cellulose powder samples were heated in drying oven at three different heating temperatures (130°C, 150°C, and 170°C) for three different heating periods (3, 5, and 7 min). Then, thermal gravimetric analysis and Fourier transform infrared spectroscopy analysis of powder samples were performed for each temperature-period combinations. No ring-opening reaction on the cellulose group was found in the Fourier transform infrared spectroscopy analysis. However, the changes in the spectra can be attributed to the chain breakage in the cellulose macromolecules as well as water loss from the molecular structure during the heating process. Microscopic and scanning electron microscopic analysis was carried out to see any surface change on the fiber and coated fabric. There was no detectable surface change on the fiber and coated fabric surface, apart from a color change on the fabric surface.

Nano/Micro Hybrid Bamboo Fibrous Preforms for Robust Biodegradable Fiber Reinforced Plastics

“…As seen from the figure, the color change of BF/CNF did not occur significantly until heat treatment at 120 °C, whereas yellowing occurred when thermal compression was performed at high temperatures of 160 °C and 200 °C. This yellowing phenomenon of the BF/CNF preform due to the high heat treatment temperature was caused by thermal degradation of cellulose [ 33 ]. The more severe the yellowing, the more degradation proceeded [ 34 ].…”

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

“…As long as physical performance is concerned, S8 presents only 11% strength loss in comparison to untreated fabric (around 30% better than sample S4) while maintaining the WI value of 69 as compared to the original value of 72 of control (Table 1). The slight reduction in WI might be subjected to the heating process while curing (Manasoglu et al 2019). The strength retention in sample S8 is subjected to a high diffusion distance of TMA in cellulose.…”

Investigation of Electrical and Wearing Properties of Wool Fabric Coated with PEDOT:PSS

“…It helps to characterize the microstructure of fibers and yarns, as well as the surface texture and finish of textiles [34,35,40,41]. FTIR-ATR spectroscopy was used to identify the chemical bonds present in the sample and to determine the chemical composition of the investigated sample [37,[42][43][44][45].…”