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Green engineering of flame-retardant, conductive, and UV protective coating for lyocell blended textiles decorated with graphene and MnO2@Ppy composite
A straightforward and green coating is prepared from graphene sheets decorated with MnO
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@Polypyrrole for obtaining multifunctional lyocell textiles. A facile ultrasonication approach was developed for the preparation of effectively exfoliated graphene sheets using sodium casein salt (mGRP). A dipping and drying method was used for applying graphene onto the textile. Further, MnO
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@Polypyrrole was then prepared on the graphene-modified textile using a new vapor polymerization approach to obtain ternary-coated textiles (LC@mGRP@MOPpy). Different spectroscopic and microscopic analysis techniques were exploited for approving the chemical structure and surface morphology of mGRP, and the various obtained textiles. The thermal, mechanical, electrical resistance, UPF, and flame retardancy behaviors of the fabricated fabrics were evaluated. The electrical resistance of the composite modified textiles was estimated as 10.6 MΩ, which is relatively lower than the pure lyocell fabric (178.9 MΩ). A highly improved ultraviolet protection factor was recorded also for the coated textile (33.74) compared to the pure one (7). Moreover, the flammability tests stated that the rate of burning of coated textile was measured as 0 mm/min compared to the virgin lyocell fabric (125 mm/min). In addition, the afterflame, and glow times were noted as 0 s, and 300 s compared to 17, and 10 s for the uncoated textiles assuring an efficient retardation performance against flame spread.