Phytic acid-induced durable fire-proof and hydrophobic complex coating for versatile cotton fabrics.

Autor: Yang M; Key Laboratory of Natural and Biomedical Polymer Materials (Guilin University of Technology), College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China., Yan C; Key Laboratory of Natural and Biomedical Polymer Materials (Guilin University of Technology), College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China., Huang Z; Key Laboratory of Natural and Biomedical Polymer Materials (Guilin University of Technology), College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China., Yu C; Key Laboratory of Natural and Biomedical Polymer Materials (Guilin University of Technology), College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China., Wang YT; SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., China., Zhao HB; The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China. Electronic address: haibor7@163.com., Rao W; Key Laboratory of Natural and Biomedical Polymer Materials (Guilin University of Technology), College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China. Electronic address: raowh1@163.com.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Nov; Vol. 281 (Pt 2), pp. 135733. Date of Electronic Publication: 2024 Sep 30.
DOI: 10.1016/j.ijbiomac.2024.135733
Abstrakt: To address the current development requirements for multifunctional cotton fabrics, a phytic acid-induced flame-retardant hydrophobic coating containing nitrogen (N), phosphorus (P), and silicon (Si) was grafted on the surface of cotton fabrics using a facile step-by-step immersion method. The limiting oxygen index value improved to 31.2 %, decreasing to 26.7 % after 50 laundering cycles, while the fabric remained self-extinguishing effect in the vertical flammability test and showed a water contact angle of 126.1°. Cone calorimetry test showed that the modified fabric could not be ignited at the irradiation heat flux of 35 kW/m 2 . When the irradiation heat flux was raised to 50 kW/m 2 , there was a significant decline in the peak heat release rate of the modified cotton fabric, which decreased by 43.2 % to a remarkably low value of 114.0 kW/m 2 , indicating excellent flame-retardant properties. The analysis of the flame-retardant mechanism uncovered that the modified coating exhibited a significant dual flame-retardant mechanism involving both the gaseous phase and the condensed phase. Additionally, the oil-water separation tests revealed that the separation efficiency of the modified cotton fabrics was as high as 97.1 % and remained around 96 % after 10 cycles, which made them reusable for the clean-up of hazardous chemicals.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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