title: Construction of flame retardant nanocoating on ramie fabric via layer-by-layer assembly of carbon nanotube and ammonium polyphosphate.
abstract: A new flame retardant nanocoating has been constructed by the alternate adsorption of polyelectrolyte amino-functionalized multiwall carbon nanotube (MWNT-NH2) and ammonium polyphosphate (APP) onto flexible and porous ramie fabric. Scanning electron microscopy indicates that the adsorbed carbon nanotube coating is a randomly oriented and overlapped network structure, which is a promising candidate for flame retardancy applications. Attenuated total reflection Fourier transform infrared spectroscopy and energy-dispersive X-ray analysis confirm that the APP is successfully incorporated into the multilayers sequentially. Assessment of the thermal and flammability properties for the pristine and nanocoated ramie fabrics shows that the thermal stability, flame retardancy and residual char are enhanced as the concentration of MWNT-NH2 suspension and number of deposition cycles increases. The enhancements are mostly attributed to the barrier effect of intumescent network structure, which is composed of MWNT-NH2 and the absorbed APP.
authors: MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors: Tao
authors: T
authors: Zhang
authors: Hongqiang
authors: H
authors: Yan
authors: Mao
authors: M
authors: Peng
authors: Lili
authors: L
authors: Wang
authors: Hongliang
authors: H
authors: Ding
authors: Zhengping
authors: Z
authors: Fang
mesh_terms: D032402:Boehmeria / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis* / Q000737:chemistry; D005411:Flame Retardants / Q000138:chemical synthesis*; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D058105:Polymerization; D011122:Polyphosphates / Q000138:chemical synthesis / Q000737:chemistry; D011208:Powders; D013784:Textiles
chemical_list: D020099:Coated Materials, Biocompatible; D005411:Flame Retardants; D037742:Nanotubes, Carbon; D010710:Phosphates; D011122:Polyphosphates; D011208:Powders; C024788:ammonium phosphate