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Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton. FIBERS 2021. [DOI: 10.3390/fib9110069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Environmentally benign layer-by-layer (LbL) deposition was used to obtain flame-retardant and antimicrobial cotton. Cotton was coated with 8, 10, and 12 phytic acid (PA) and chitosan (CH)-urea bilayers (BL) and then immersed into copper (II) sulfate (CuSO4) solution. Our findings were that 12 BL of PA/CH-urea + Cu2+ were able to stop flame on cotton during vertical flammability testing (VFT) with a limiting oxygen index (LOI) value of 26%. Microscale combustion calorimeter (MCC) data showed a reduction of peak heat release rates (pHRR) of more than 61%, while the reduction of total heat release (THR) was more than 54%, relative to untreated cotton. TG-IR analysis of 12 BL-treated cotton showed the release of water, methane, carbon dioxide, carbon monoxide, and aldehydes, while by adding Cu2+ ions, the treated cotton produces a lower amount of methane. Treated cotton also showed no levoglucosan. The intumescent behavior of the treatment was indicated by the bubbled structure of the post-burn char. Antibacterial testing showed a 100% reduction of Klebsiella pneumoniae and Staphylococcus aureus. In this study, cotton was successfully functionalized with a multifunctional ecologically benign flame-retardant and antibacterial nanocoating, by means of LbL deposition.
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Aspects of the reduction of the coating fire resistance by the use of nanosized additives. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-020-01405-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abdelkhalik A, Makhlouf G, Hassan MA. Manufacturing, thermal stability, and flammability properties of polypropylene containing new single molecule intumescent flame retardant. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4573] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Aksam Abdelkhalik
- National Institute for Standards; El-sadat street, El-Haram, El-Giza, PO Box 136 code 12211 Egypt
| | - Ghada Makhlouf
- National Institute for Standards; El-sadat street, El-Haram, El-Giza, PO Box 136 code 12211 Egypt
| | - Mohamed Aly Hassan
- National Institute for Standards; El-sadat street, El-Haram, El-Giza, PO Box 136 code 12211 Egypt
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Sharon P, Afri M, Mitlin S, Gottlieb L, Schmerling B, Grinstein D, Welner S, Frimer AA. Preparation and characterization of bis(guanidinium) and bis(aminotetrazolium)dodecahydroborate salts: Green high energy nitrogen and boron rich compounds. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.09.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Costa L, Avataneo M, Bracco P, Brunella V. Char formation in polyvinyl polymers I. Polyvinyl acetate. Polym Degrad Stab 2002. [DOI: 10.1016/s0141-3910(02)00108-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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