Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton

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 (CuSO<sub>4</sub>) solution. Our findi...

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Autores principales:	Eva Magovac, Bojana Vončina, Ana Budimir, Igor Jordanov, Jaime C. Grunlan, Sandra Bischof
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cotton antimicrobial flame-retardancy chitosan phytic acid copper (II) sulfate Chemicals: Manufacture, use, etc. TP200-248 Textile bleaching, dyeing, printing, etc. TP890-933 Biology (General) QH301-705.5 Physics QC1-999
Acceso en línea:	https://doaj.org/article/fcfe2bac96fa407ca2f7bb442ca1f23d
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spelling	oai:doaj.org-article:fcfe2bac96fa407ca2f7bb442ca1f23d2021-11-25T17:31:16ZEnvironmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton10.3390/fib91100692079-6439https://doaj.org/article/fcfe2bac96fa407ca2f7bb442ca1f23d2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-6439/9/11/69https://doaj.org/toc/2079-6439Environmentally 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 (CuSO<sub>4</sub>) solution. Our findings were that 12 BL of PA/CH-urea + Cu<sup>2+</sup> 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 Cu<sup>2+</sup> 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 <i>Klebsiella pneumoniae</i> and <i>Staphylococcus aureus</i>. In this study, cotton was successfully functionalized with a multifunctional ecologically benign flame-retardant and antibacterial nanocoating, by means of LbL deposition.Eva MagovacBojana VončinaAna BudimirIgor JordanovJaime C. GrunlanSandra BischofMDPI AGarticlecottonantimicrobialflame-retardancychitosanphytic acidcopper (II) sulfateChemicals: Manufacture, use, etc.TP200-248Textile bleaching, dyeing, printing, etc.TP890-933Biology (General)QH301-705.5PhysicsQC1-999ENFibers, Vol 9, Iss 69, p 69 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cotton antimicrobial flame-retardancy chitosan phytic acid copper (II) sulfate Chemicals: Manufacture, use, etc. TP200-248 Textile bleaching, dyeing, printing, etc. TP890-933 Biology (General) QH301-705.5 Physics QC1-999
spellingShingle	cotton antimicrobial flame-retardancy chitosan phytic acid copper (II) sulfate Chemicals: Manufacture, use, etc. TP200-248 Textile bleaching, dyeing, printing, etc. TP890-933 Biology (General) QH301-705.5 Physics QC1-999 Eva Magovac Bojana Vončina Ana Budimir Igor Jordanov Jaime C. Grunlan Sandra Bischof Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton
description	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 (CuSO<sub>4</sub>) solution. Our findings were that 12 BL of PA/CH-urea + Cu<sup>2+</sup> 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 Cu<sup>2+</sup> 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 <i>Klebsiella pneumoniae</i> and <i>Staphylococcus aureus</i>. In this study, cotton was successfully functionalized with a multifunctional ecologically benign flame-retardant and antibacterial nanocoating, by means of LbL deposition.
format	article
author	Eva Magovac Bojana Vončina Ana Budimir Igor Jordanov Jaime C. Grunlan Sandra Bischof
author_facet	Eva Magovac Bojana Vončina Ana Budimir Igor Jordanov Jaime C. Grunlan Sandra Bischof
author_sort	Eva Magovac
title	Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton
title_short	Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton
title_full	Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton
title_fullStr	Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton
title_full_unstemmed	Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton
title_sort	environmentally benign phytic acid-based nanocoating for multifunctional flame-retardant/antibacterial cotton
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fcfe2bac96fa407ca2f7bb442ca1f23d
work_keys_str_mv	AT evamagovac environmentallybenignphyticacidbasednanocoatingformultifunctionalflameretardantantibacterialcotton AT bojanavoncina environmentallybenignphyticacidbasednanocoatingformultifunctionalflameretardantantibacterialcotton AT anabudimir environmentallybenignphyticacidbasednanocoatingformultifunctionalflameretardantantibacterialcotton AT igorjordanov environmentallybenignphyticacidbasednanocoatingformultifunctionalflameretardantantibacterialcotton AT jaimecgrunlan environmentallybenignphyticacidbasednanocoatingformultifunctionalflameretardantantibacterialcotton AT sandrabischof environmentallybenignphyticacidbasednanocoatingformultifunctionalflameretardantantibacterialcotton
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Environmentally Benign Phytic Acid-Based Nanocoating for Multifunctional Flame-Retardant/Antibacterial Cotton

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