Flame-Resistant Cellulose Fibers with Magnesium Hydroxide Prepared by Wet Electrospinning Yingying Zheng Visiting Scholar Department of Chemistry and Chemical Biology Rensselaer Polytechnic Institute, Troy, NY, USA 2013 Rensselaer Nanotechnology Center Research Symposium Wednesday, November 6, 2013 Robert J. Linhardt, Trevor J. Simmons, Jianjun Miao
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Flame-Resistant Cellulose Fibers with Magnesium Hydroxide Prepared by Wet Electrospinning
Yingying ZhengVisiting Scholar
Department of Chemistry and Chemical Biology Rensselaer Polytechnic Institute, Troy, NY, USA
2013 Rensselaer Nanotechnology Center Research SymposiumWednesday, November 6, 2013
Robert J. Linhardt, Trevor J. Simmons, Jianjun Miao
Cellulose Fiber
Ease of thermal degradation, ignition and burning
Availability in vast quantitiesGood mechanical propertiesBiodegradabilityHydrophilicity…
Commonly Used Durable Flame Retardants
PEPBP
Halogen, Nitrogen, Organic-phosphorus compounds
React with the cellulosic fibre or form cross-linked structures on the fibre
-----W. Liu et al. Polymer Degradation and Stability 97 (2012) 2487
-----Z. Yang et al. Polymer Degradation and Stability 97 (2012) 2467
Fabrication of the Flame-Retarded Fibers of Cellulose—Wet Electrospinning
1. Coating of Cellulose with Mg(OH)2 (outside) 2. The mixture of the Cellulose and Mg(OH)2(inside)
3. Coating of the mixture of the Cellulose and Mg(OH)2 (inside & outside)
Standard Vortex Mixer
Ionic liquids
Fig. 1 TGA curves of cellulose under air and N2 atmosphere Fig. 2 TGA and DSCcurves of Nano Mg(OH)2
220-300OCMass loss:76%flame combustion
300-500OCMass loss:22%Smouldering phenomenon
Thermal Properties of Cellulose and Mg(OH)2
Fig.4 The XRD spectra of the cellulose fibers coated with nano Mg(OH)2
Fig.3 The ATR-FTIRspectra of the cellulose fibers with nano Mg(OH)2