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Self-cleaning cotton fabrics with good flame retardancy via one-pot approach.

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Title:	Self-cleaning cotton fabrics with good flame retardancy via one-pot approach.
Authors:	Fu, Can^1,2,3 (AUTHOR), Ye, Wen³ (AUTHOR), Zhai, Zhongjie⁴ (AUTHOR), Zhang, Jing^1,2 (AUTHOR), Li, Pingyang³ (AUTHOR), Xu, Baoyun³ (AUTHOR), Li, Xiaolei³ (AUTHOR), Gao, Fei⁴ (AUTHOR), Zhai, Jinguo³ (AUTHOR), Wang, De-Yi^1,5 (AUTHOR) deyi.wang@imdea.org
Source:	Polymer Degradation & Stability. Oct2021, Vol. 192, pN.PAG-N.PAG. 1p.
Subjects:	Cotton textiles, Flame, Fireproofing agents, Condensed matter, Fire testing, Contact angle, Superhydrophobic surfaces
Abstract:	• Non-halogenated method to functional cotton fabrics was developed. • Functional fabrics displayed good flame retardancy via both gaseous and condensed phases. • Functional fabrics exhibited excellent hydrophobic property. The demand for multifunctional cotton fabrics possessing fire retardancy and hydrophobic self-cleaning property is soaring in recent years. In this work, non-halogen functional coatings by water-soluble phenylphosphinyl and amine-containing silanol (WPAS) were prepared through sol-gel method, in which functional cotton fabrics embraced with flame retardant (FR) and hydrophobic properties, simultaneously. The prepared WPAS coated functional fabrics reached as high as 30.4% for LOI value, and extinguished immediately after removing the ignitor in vertical fire test. Low-energy •PO free radicals released by WPAS which was detected by TG-MS and TG-FTIR, captured high energy radicals such as •H or •OH radicals in the gas-phase. The char residue study from SEM, FTIR, Raman and XPS results found that P/Si/N thermostable ceramic char layer and aromatic carbonaceous structures formed which could provide a good barrier effect, effectively hindering diffusion of oxygen and transferring of heat into the flame zone. Additionally, water contact angle of functional cotton increased to 145° compared with cotton. As a result, it displayed hydrophobic self-cleaning property towards a series of common liquids in daily life. This convenient, eco-friendly one-pot approach is promising, and feasible for large-scale production of functional cotton fabrics with both excellent FR and hydrophobic self-cleaning properties to end-use industrial applications. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	• Non-halogenated method to functional cotton fabrics was developed. • Functional fabrics displayed good flame retardancy via both gaseous and condensed phases. • Functional fabrics exhibited excellent hydrophobic property. The demand for multifunctional cotton fabrics possessing fire retardancy and hydrophobic self-cleaning property is soaring in recent years. In this work, non-halogen functional coatings by water-soluble phenylphosphinyl and amine-containing silanol (WPAS) were prepared through sol-gel method, in which functional cotton fabrics embraced with flame retardant (FR) and hydrophobic properties, simultaneously. The prepared WPAS coated functional fabrics reached as high as 30.4% for LOI value, and extinguished immediately after removing the ignitor in vertical fire test. Low-energy •PO free radicals released by WPAS which was detected by TG-MS and TG-FTIR, captured high energy radicals such as •H or •OH radicals in the gas-phase. The char residue study from SEM, FTIR, Raman and XPS results found that P/Si/N thermostable ceramic char layer and aromatic carbonaceous structures formed which could provide a good barrier effect, effectively hindering diffusion of oxygen and transferring of heat into the flame zone. Additionally, water contact angle of functional cotton increased to 145° compared with cotton. As a result, it displayed hydrophobic self-cleaning property towards a series of common liquids in daily life. This convenient, eco-friendly one-pot approach is promising, and feasible for large-scale production of functional cotton fabrics with both excellent FR and hydrophobic self-cleaning properties to end-use industrial applications. [ABSTRACT FROM AUTHOR]
ISSN:	01413910
DOI:	10.1016/j.polymdegradstab.2021.109700