Plasma treatment machine manufacturers introduce to you the desizing of cotton fabric by atmospheric pressure plasma treatment

• Categories:Industry News
• Author:Plasma cleaning machine-CRF plasma plasma equipment-plasma surface treatment machine manufacturer-chengfeng intelligent manufacturing
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• Time of issue:2021-09-23
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(Summary description)Plasma treatment machine manufacturers introduce to you the desizing of cotton fabric by atmospheric pressure plasma treatment: Research on the modification of fiber materials by low-temperature plasma has been carried out since the 1970s. Low-temperature plasma treatment can improve fiber wettability, easy decontamination, printing and dyeing performance, etc. The following Chengfeng Zhizhi plasma treatment machine manufacturer will explain its process. The fabric must be desizing before dyeing, printing and finishing. Different slurry desizing methods are often different. For PVA pulp, the traditional method mainly uses H2O2 or alkali high temperature desizing, usually two hot and cold water washing, which consumes water and energy, and produces a lot of waste water. In recent years, we have applied atmospheric pressure plasma technology to remove PVA slurry from cotton fabrics. After the pure cotton sizing cloth sample is plasma treated, the cellulose itself is etched and the loss of water is relatively small, so the weight loss rate of the fabric. It can be considered as an important indicator that directly reflects the amount of PVA slurry that is oxidized and degraded into small molecules and disappeared by plasma. It can be seen that the plasma treatment of atmospheric pressure plasma treatment machine can cause the oxidative degradation of PVA slurry and lose weight. After the fabric containing PVA slurry is subjected to regular pressure plasma treatment, the weight loss is obvious, and the solubility of PVA in water after treatment increases, which helps For cold water desizing, these changes should be related to the changes in the chemical composition and structure of the PVA. These changes indicate that the atmospheric pressure plasma treatment machine plasma treatment will cause the PVA to undergo oxidative degradation, resulting in the reduction of CH and CC bonds, the increase of CO, C=O, O=C, and O- bonds, and the oxygen-air-helium plasma has an effect on PVA. The effect is stronger than that of air helium. Generally speaking, the PVA desizing process includes swelling, dissolution and dispersion. The molecular weight of PVA and the degree of degradation of macromolecules are two important factors affecting its desizing. XPS analysis shows that atmospheric pressure plasma treatment can cause PVA to undergo oxidative degradation and cause the PVA macromolecular chain to be cut, which is conducive to the swelling, dissolution and dispersion of PVA. Compared with the commonly used H2O2 desizing process, the atmospheric pressure plasma treatment of Chengfeng Zhizhi plasma treatment machine manufacturers can achieve the effects of water saving, energy saving and less pollution. Before plasma treatment, there is a lot of PVA slurry on the fiber, and the surface is uneven, and there are a lot of particulate matter attached, making the surface of the fiber rough. After plasma treatment, the particulate matter on the fiber surface has been significantly reduced, and the surface is relatively clean. Atmospheric pressure plasma from Chengfeng Zhizhi plasma treatment machine manufacturer has obvious oxidative degradation effect on PVA slurry. Plasma treatment increases the solubility of PVA slurry in cold water. This may be due to the degradation of PVA macromolecules into relatively small molecules due to the action of plasma, making it easier to swell and dissolve in water.