Nour F. Attia, Heba Ameen, Ibrahim E. El-Sayed, Ahmed A. Galhoum, Jiayu Xin, Xingmei Lu
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引用次数: 0
Abstract
Green and facile route was employed for development of smart flame-retardant, antibacterial and reinforced textile fabric's coatings. The multifunctional coatings were fabricated from sustainable chitosan functionalized via one pot method with α-aminophosphonates with different groups (methyl and phenyl groups). Phenyl- and methyl-based α-aminophosphonates were grafted on chitosan chains individually. Additionally, magnetic chitosan-Fe3O4 nanoparticles functionalized α-aminophosphonates-based phenyl moiety were also prepared. Moreover, tetra-n-butylammonium hexafluorophosphate was also dispersed in coating dispersion. The different prepared functionated chitosan was then exploited as efficient flame-retardant, reinforced and antibacterial-based multifunctional coatings for cotton fabrics. Different mass loadings of methyl- and phenyl-based functionalized chitosan and magnetic chitosan were dispersed in chitosan solution and then coated on cotton surface. The influence of mass loading and different side groups was studied. Flammability, tensile strength and antibacterial properties of developed cotton fabrics were evaluated. The flammability of coated cotton fabrics was strongly improved achieving reduction in rate of burning by 48% compared to uncoated one. This is in addition to LOI value of 23.5% compared to 18% for uncoated fabric. This is due to the influence of organic phosphate in coating layer which stimulates the formation of protective char layer. The tensile strength of coated fabrics was improved recording 29% enhancement compared to uncoated one. Moreover, the developed coating layer strongly inhibits the growth of well-known bacterial strains Escherichia coli and Staphylococcus aureus, achieving clear antibacterial inhibition zones of 16.7 and 23.6 mm, respectively. Additionally, the flame retardancy mechanism was proposed and elucidated.
期刊介绍:
Journal of Thermal Analysis and Calorimetry is a fully peer reviewed journal publishing high quality papers covering all aspects of thermal analysis, calorimetry, and experimental thermodynamics. The journal publishes regular and special issues in twelve issues every year. The following types of papers are published: Original Research Papers, Short Communications, Reviews, Modern Instruments, Events and Book reviews.
The subjects covered are: thermogravimetry, derivative thermogravimetry, differential thermal analysis, thermodilatometry, differential scanning calorimetry of all types, non-scanning calorimetry of all types, thermometry, evolved gas analysis, thermomechanical analysis, emanation thermal analysis, thermal conductivity, multiple techniques, and miscellaneous thermal methods (including the combination of the thermal method with various instrumental techniques), theory and instrumentation for thermal analysis and calorimetry.