The Experts below are selected from a list of 66 Experts worldwide ranked by ideXlab platform

Süleyman Çoban - One of the best experts on this subject based on the ideXlab platform.

  • Performance Comparison of New (Dendrimer, Nanoproduct) and Conventional Water, Oil and Stain Repellentss
    Fibres & Textiles in Eastern Europe, 2020
    Co-Authors: E. S. Namligöz, Muhammed İbrahim Bahtiyari, E. Hosaf, Süleyman Çoban
    Abstract:

    *Erciyes University Department of Textile Engineering, Kayseri/Turkey Abstract In this study, novel water, oil and Stain repellent chemicals such as polymeric dendrimer containing fluorocarbon, nano sized fluorocarbon polymer, nano-silica acid and conventional agents such as paraffin emulsion containing zirconium salt and conventional FC (micro emulsion) compound were applied to cotton fabrics. After treatments, the water, oil and Stain Repellency, air permeability and water vapour permeability of all the fabrics treated were tested, and the effect of the chemical concentration, performance and washing resistance of all the chemicals were compared. In general, the water, oil and Stain Repellency results showed that new chemicals such as polymeric dendrimer containing FC and FC nanomolecules had better results than conventional ones in terms of performance and washing resistance. The performance of all the chemicals increased with a rise in chemical concentration. The air and water vapour permeability of all the fabrics treated were not negatively affected. FTIR analyses of the fabrics treated were also carried out.

  • Performance Comparison of New (Dendrimer, Nanoproduct) and Conventional Water, Oil and Stain Repellents E. S. Namligoz, *M. İ. Bahtiyari, E. Hosaf,
    2020
    Co-Authors: Süleyman Çoban
    Abstract:

    In this study, novel water, oil and Stain repellent chemicals such as polymeric dendrimer containing fluorocarbon, nano sized fluorocarbon polymer, nano-silica acid and conven tional agents such as paraffin emulsion containing zirconium salt and conventional FC (micro emulsion) compound were applied to cotton fabrics. After treatments, the water, oil and Stain Repellency, air permeability and water vapour permeability of all the fabrics treated were tested, and the effect of the chemical concentration, performance and washing resistance of all the chemicals were compared. In general, the water, oil and Stain Repellency results showed that new chemicals such as polymeric dendrimer containing FC and FC nanomolecules had better results than conventional ones in terms of performance and washing resistance. The performance of all the chemicals increased with a rise in chemical concentration. The air and water vapour permeability of all the fabrics treated were not negatively affected. FTIR analyses of the fabrics treated were also carried out.

Gang Yu - One of the best experts on this subject based on the ideXlab platform.

  • Screening of textile finishing agents available on the Chinese market: An important source of per- and polyfluoroalkyl substances to the environment
    Frontiers of Environmental Science & Engineering, 2019
    Co-Authors: Mehvish Mumtaz, Yixiang Bao, Lingxiao Kong, Wenchao Li, Jun Huang, Gang Yu
    Abstract:

    Organofluorinated surfactants are widely employed in textile finishing agents (TFAs) to achieve oil, water, and Stain Repellency. This has been regarded as an important emission source of per-and polyfluoroalkyl substances (PFASs) to the environment. China is the biggest manufacturer of clothes, and thus TFA production is also a relevant industrial activity. Nevertheless, to date, no survey has been conducted on PFAS contents in commercially available TFAs. In the present study, TFA products were investigated by the Kendrick mass defect method. The quantification results demonstrated a significant presence of perfluorooctane sulfonate (0.37 mg/L) in TFAs manufactured by electrochemical fluorination technology. The products obtained by short-chain PFAS-based telomerization were dominated by perfluorooctanoic acid (mean concentration: 0.29 mg/L), whose values exceeded the limits stated in the European Chemical Agency guidelines (0.025 mg/L). Moreover, the total oxidizable precursor assay indicated high levels of indirectly quantified precursors with long alkyl chains (C7-C9). Together, these results suggest that there is currently a certain of environmental and health risks in China that originates from the utilization of TFAs, and a better manufacturing processes are required to reduce such risks.

  • Screening of textile finishing agents available on the Chinese market: An important source of per- and polyfluoroalkyl substances to the environment
    Frontiers of Environmental Science & Engineering in China, 2019
    Co-Authors: Mehvish Mumtaz, Lingxiao Kong, Wenchao Li, Jun Huang, Gang Yu
    Abstract:

    Organofluorinated surfactants are widely employed in textile finishing agents (TFAs) to achieve oil, water, and Stain Repellency. This has been regarded as an important emission source of per-and polyfluoroalkyl substances (PFASs) to the environment. China is the biggest manufacturer of clothes, and thus TFA production is also a relevant industrial activity. Nevertheless, to date, no survey has been conducted on PFAS contents in commercially available TFAs. In the present study, TFA products were investigated by the Kendrick mass defect method. The quantification results demonstrated a significant presence of perfluorooctane sulfonate (0.37 mg/L) in TFAs manufactured by electrochemical fluorination technology. The products obtained by short-chain PFAS-based telomerization were dominated by perfluorooctanoic acid (mean concentration: 0.29 mg/L), whose values exceeded the limits stated in the European Chemical Agency guidelines (0.025 mg/L). Moreover, the total oxidizable precursor assay indicated high levels of indirectly quantified precursors with long alkyl chains (C7-C9). Together, these results suggest that there is currently a certain of environmental and health risks in China that originates from the utilization of TFAs, and a better manufacturing processes are required to reduce such risks. Open image in new window

Huaqiong Li - One of the best experts on this subject based on the ideXlab platform.

  • multifunctional superhydrophobic composite materials with remarkable mechanochemical robustness Stain Repellency oil water separation and sound absorption properties
    Chemical Engineering Journal, 2019
    Co-Authors: Zusheng Huang, Yunyun Quan, Yili Wang, Jing Zheng, Zhong Chen, Huaqiong Li
    Abstract:

    Abstract Superhydrophobic materials have attracted immense commercial and academic interests in recent years. However, the poor mechanical durability has restricted their practical applications where high durability is required. Here, a facile one-pot synthesis method was reported to fabricate multifunctional superhydrophobic composite materials with remarkable mechanochemical robustness, Stain Repellency, oil-water separation and sound-absorption. Their mechanical and chemical durability could be greatly improved by chemically adhering epoxy resin microspheres (ERMs) on 3-D porous skeleton structures of latex sponge. The materials could retain superhydrophobicity after going through sandpaper abrasion, ultrasonication, multiple knife scratch, tape peeling and finger wiping, and exposure to UV irradiation and high temperature. The materials are able to maintain the Repellency against strong acid and alkali droplets. The combined excellent mechanical properties, liquid Repellency & selectivity, and other functional properties displayed by this type of material have made it a strong candidate for a range of industrial applications.

Mehvish Mumtaz - One of the best experts on this subject based on the ideXlab platform.

  • Screening of textile finishing agents available on the Chinese market: An important source of per- and polyfluoroalkyl substances to the environment
    Frontiers of Environmental Science & Engineering, 2019
    Co-Authors: Mehvish Mumtaz, Yixiang Bao, Lingxiao Kong, Wenchao Li, Jun Huang, Gang Yu
    Abstract:

    Organofluorinated surfactants are widely employed in textile finishing agents (TFAs) to achieve oil, water, and Stain Repellency. This has been regarded as an important emission source of per-and polyfluoroalkyl substances (PFASs) to the environment. China is the biggest manufacturer of clothes, and thus TFA production is also a relevant industrial activity. Nevertheless, to date, no survey has been conducted on PFAS contents in commercially available TFAs. In the present study, TFA products were investigated by the Kendrick mass defect method. The quantification results demonstrated a significant presence of perfluorooctane sulfonate (0.37 mg/L) in TFAs manufactured by electrochemical fluorination technology. The products obtained by short-chain PFAS-based telomerization were dominated by perfluorooctanoic acid (mean concentration: 0.29 mg/L), whose values exceeded the limits stated in the European Chemical Agency guidelines (0.025 mg/L). Moreover, the total oxidizable precursor assay indicated high levels of indirectly quantified precursors with long alkyl chains (C7-C9). Together, these results suggest that there is currently a certain of environmental and health risks in China that originates from the utilization of TFAs, and a better manufacturing processes are required to reduce such risks.

  • Screening of textile finishing agents available on the Chinese market: An important source of per- and polyfluoroalkyl substances to the environment
    Frontiers of Environmental Science & Engineering in China, 2019
    Co-Authors: Mehvish Mumtaz, Lingxiao Kong, Wenchao Li, Jun Huang, Gang Yu
    Abstract:

    Organofluorinated surfactants are widely employed in textile finishing agents (TFAs) to achieve oil, water, and Stain Repellency. This has been regarded as an important emission source of per-and polyfluoroalkyl substances (PFASs) to the environment. China is the biggest manufacturer of clothes, and thus TFA production is also a relevant industrial activity. Nevertheless, to date, no survey has been conducted on PFAS contents in commercially available TFAs. In the present study, TFA products were investigated by the Kendrick mass defect method. The quantification results demonstrated a significant presence of perfluorooctane sulfonate (0.37 mg/L) in TFAs manufactured by electrochemical fluorination technology. The products obtained by short-chain PFAS-based telomerization were dominated by perfluorooctanoic acid (mean concentration: 0.29 mg/L), whose values exceeded the limits stated in the European Chemical Agency guidelines (0.025 mg/L). Moreover, the total oxidizable precursor assay indicated high levels of indirectly quantified precursors with long alkyl chains (C7-C9). Together, these results suggest that there is currently a certain of environmental and health risks in China that originates from the utilization of TFAs, and a better manufacturing processes are required to reduce such risks. Open image in new window

Zusheng Huang - One of the best experts on this subject based on the ideXlab platform.

  • multifunctional superhydrophobic composite materials with remarkable mechanochemical robustness Stain Repellency oil water separation and sound absorption properties
    Chemical Engineering Journal, 2019
    Co-Authors: Zusheng Huang, Yunyun Quan, Yili Wang, Jing Zheng, Zhong Chen, Huaqiong Li
    Abstract:

    Abstract Superhydrophobic materials have attracted immense commercial and academic interests in recent years. However, the poor mechanical durability has restricted their practical applications where high durability is required. Here, a facile one-pot synthesis method was reported to fabricate multifunctional superhydrophobic composite materials with remarkable mechanochemical robustness, Stain Repellency, oil-water separation and sound-absorption. Their mechanical and chemical durability could be greatly improved by chemically adhering epoxy resin microspheres (ERMs) on 3-D porous skeleton structures of latex sponge. The materials could retain superhydrophobicity after going through sandpaper abrasion, ultrasonication, multiple knife scratch, tape peeling and finger wiping, and exposure to UV irradiation and high temperature. The materials are able to maintain the Repellency against strong acid and alkali droplets. The combined excellent mechanical properties, liquid Repellency & selectivity, and other functional properties displayed by this type of material have made it a strong candidate for a range of industrial applications.