نوع المستند : أبحاث علمیة
المؤلفون
1
Assistant Professor of Garments and Textile, Department of home Economics, Faculty of Specific Education, Alexandria university
2
Research doctor, Gas Analysis and Fire Safety Laboratory, Chemistry Division, National Institute for Standards, Giza, Egypt
3
Polymers and Pigments Department, Chemical Industries Research institute, National Research Center, Dokki, Giza, Egypt
المستخلص
Pyrrole Vapor Polymerization (PVP) is a green, easy, and advantageous approach to attach improved multilateral features to various substrates for being implemented in different aspects.
The research aims to study the possibility of to design to rationally designed flame-retardant coating by vapor polymerization for obtaining lyocell blended textiles with multifunctional properties.
In this study, a newly straightforward PVP was stimulated on Lyocell blend textiles using both AgNO3 and KMnO4 as oxidants that were formerly dissolved in CMC polymer. The mass ratios between the two oxidants were altered to yield new composite textiles. When a redox interaction occurred between pyrrole vapor and MnO4/Ag anions, a new silver and manganese dioxide@Polypyrrole (Ag-MnO2@Ppy) was formed as an effective coating for obtaining smart multifunctional textiles.
The structural, morphological, thermal, and mechanical features of as-developed fabrics were investigated. Notably, MnO2 and Ag nanoparticles were grown inside polypyrrole nano granules on textile with size diameters of ~583, and 58 nm, respectively.
In addition, the UV protection, conductivity, antimicrobial activity, and fire safety properties were studied. The electrical resistance of the composite modified textiles was estimated as) 26.3 MΩ (, which is relatively lower than the pure Lyocell fabric (165 MΩ). A highly improved ultraviolet protection factor was recorded also for the coated textile (33.69) compared to the pure one (6.2). Also, the textile composites could retard the microbial infection with measured inhibition zone diameters of 29, and 28 mm for E. coli, and S. aureus, respectively approving an excellent antimicrobial manner. Moreover, the flammability tests stated that the rate of burning of coated textile was measured to be 0 mm/min with regard to the virgin Lyocell fabric (172.5 mm/min). In addition, the afterflame, and glow times were noted as 0, and 395 sec compared to 14, and 35 sec for the uncoated textiles assuring an efficient retardation performance against flame spread.
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