Characterization of cyanophyte biomass in a Bureau of Reclamation reservoir

Simon, N.S.; Ali, Ahmad Abdul; Samperton, Kyle M.; Korson, Charles S.; Fischer, Kris; Hughes, Michael L.

doi:10.3133/ofr20131156

Cited by 1 publication

(1 citation statement)

References 7 publications

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“…In addition to the H 3 PO 4 peak, the burned spectra contain small peaks that appear at −10.0 ppm for TPN1-18 and 17.1 ppm for TPN3-20 . They are likely the side products from the decomposition of TPN1 and TPN3 with possible structures of 4 [59,60,61] and 5 [62,63,64] (Figure 7), respectively. Furthermore, the side product in TPN1 cannot be the pyrophosphoric acid A (Figure 7) as this has a 31 P chemical shift at −14 ppm [65].…”

Section: Resultsmentioning

confidence: 99%

Understanding the Mechanism of Action of Triazine-Phosphonate Derivatives as Flame Retardants for Cotton Fabric

et al. 2015

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Countless hours of research and studies on triazine, phosphonate, and their combination have provided insightful information into their flame retardant properties on polymeric systems. However, a limited number of studies shed light on the mechanism of flame retardancy of their combination on cotton fabrics. The purpose of this research is to gain an understanding of the thermal degradation process of two triazine-phosphonate derivatives on cotton fabric. The investigation included the preparation of diethyl 4,6-dichloro-1,3,5-triazin-2-ylphosphonate (TPN1) and dimethyl (4,6-dichloro-1,3,5-triazin-2-yloxy) methyl phosphonate (TPN3), their application on fabric materials, and the studies of their thermal degradation mechanism. The studies examined chemical components in both solid and gas phases by using attenuated total reflection infrared (ATR-IR) spectroscopy, thermogravimetric analysis coupled with Fourier transform infrared (TGA-FTIR) spectroscopy, and 31 P solid state nuclear magnetic resonance ( 31 P solid state NMR), in addition to the computational studies of bond dissociation energy (BDE). Despite a few differences in their decomposition, TPN1 and TPN3 produce one common major product that is believed to help reduce the flammability of the fabric.

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