Layer-by-Layer Self-assembly of Organic-inorganic Hybrid Intumescent Flame Retardant on Cotton Fabrics 


Vol. 20,  No. 3, pp. 538-544, Mar.  2019
10.1007/s12221-019-8914-z


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  Abstract

In this study, a novel organic-inorganic hybrid intumescent flame-retardant composed of nanosilica (SiO2) covered with polyethyleneimine (PEI) and phytic acid (PA) was coated on cotton fabrics by layer-by-layer (LbL) self-assembly to improve flame retardancy of cotton fabrics. FT-IR, SEM and EDX were used to characterize the deposition of SiO2-PEI/PA on the surface of cotton fabrics. The LbL assembly process had a minor effect on the tensile strength of cotton fabrics. With the synergistic effect of phosphorus, nitrogen and silicon, the coated cotton fabrics with only 7 bilayers exhibited excellent flame retardancy with an LOI value of 33.7 % and a char length of 7.5 cm. TG analysis results showed that cotton/(SiO2-PEI/PA)7 had 40.7 % char residue at 600 oC, compared with 8 % char residue of uncoated cotton fabrics. Cone calorimetry test confirmed that cotton/(SiO2-PEI/PA)7 displayed a major reduction in peak of heat release rate (pHRR) of 75 % and total heat release (THR) of 52 %.

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  Cite this article

[IEEE Style]

S. Li, F. Ding, X. Lin, Z. Li, X. Ren, "Layer-by-Layer Self-assembly of Organic-inorganic Hybrid Intumescent Flame Retardant on Cotton Fabrics," Fibers and Polymers, vol. 20, no. 3, pp. 538-544, 2019. DOI: 10.1007/s12221-019-8914-z.

[ACM Style]

Shanshan Li, Fang Ding, Xinghuan Lin, Zhiguang Li, and Xuehong Ren. 2019. Layer-by-Layer Self-assembly of Organic-inorganic Hybrid Intumescent Flame Retardant on Cotton Fabrics. Fibers and Polymers, 20, 3, (2019), 538-544. DOI: 10.1007/s12221-019-8914-z.

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