Flame-retardant coating by alternate assembly of poly(vinylphosphonic acid) and polyethylenimine for ramie fabrics

Wang, Li-li and Zhang, Tao and Yan, Hong-quiang and Peng, Mao and Fang, Zheng-ping and Li, Yan and Wang, Hao (2014) Flame-retardant coating by alternate assembly of poly(vinylphosphonic acid) and polyethylenimine for ramie fabrics. Chinese Journal of Polymer Science, 32 (3). pp. 305-314. ISSN 0256-7679

Abstract

A novel intumescent flame retardant coating, consisting of poly(vinylphosphonic acid) (PVPA) as the acid source and branched polyethylenimine (BPEI) as the blowing agent, was constructed on the surface of ramie fabrics by alternate assembly to remarkably improve the flame retardancy of ramie. The PVPA/BPEI coating on the surface of individual fibers of ramie fabric pyrolyzes to form protective char layer upon heating/burning and improves the flame retardancy of ramie. Thermogravimetric analysis reveals that the PVPA/BPEI-coated ramie fabrics left as much as 25.8 wt% residue at 600 °C, while the control (uncoated) fabric left less than 1.4 wt% residue. Vertical flame test shows that all PVPA/BPEI-coated fabrics have shorter after-flame time, and the residues well preserved the original weave structure and fiber morphology, whereas, the uncoated fabric left only ashes. Microscale combustion calorimetry shows that the PVPA/BPEI coatings greatly reduce the total heat release by as much as 66% and the heat release capacity by 76%, relative to those of the uncoated fabric. © Chinese Chemical Society.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © Chinese Chemical Society.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 26 May 2015 03:01
Last Modified: 26 May 2015 23:37
Uncontrolled Keywords: alternative assembly; flame retardant; poly(vinylphosphonic acid); ramie fabric
Fields of Research : 09 Engineering > 0910 Manufacturing Engineering > 091012 Textile Technology
Identification Number or DOI: 10.1007/s10118-014-1408-y
URI: http://eprints.usq.edu.au/id/eprint/27385

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