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Influence of Hydrolytic Degradation on Properties of Moisture Membranes Used in Fire-Protective Clothing
Abstract:This study intends to show the influence of the hydrolytic degradation on the properties of the e-PTFE/NOMEX® membranes used in fire-protective clothing. The modification of water vapour permeability, morphology and chemical structure was examined by MOCON Permatran, electron microscopy scanning (SEM), and ATR-FTIR, respectively. A decrease in permeability to water vapour of the aged samples was observed following closure of transpiration pores. Analysis of fiber morphology indicates the appearance of defects at the fibers surface with the presence of micro cavities. ATR-FTIR analysis reveals the presence of a new absorption band attributed to carboxylic acid terminal groups generated during the amide bond hydrolysis.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1108811Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2174
 El Aidani, R., Dolez, P., Vu-Khanh, T. Effect of thermal aging on the mechanical and barrier properties of an e-PTFE/Nomex® moisture membrane used in firefighters' protective suits. J. of Applied Polymer Sci. 121(5), 3101–3110 (2011).
 El Aidani, R. Nguyen-Tri, P., Malajati, Y., Vu-Khanh, T. Photochemical aging of an e-PTFE/NOMEX (R) membrane used in firefighter protective clothing. Polymer Degradation and Stability. 98(7), 1300– 1310 (2013).
 Lawson, J.R. Fire Fighters' Protective Clothing and Thermal Environments of Structural Fire Fighting, National Institute of Standards and Technology, NISTIR 5804, Gaithersburg, MD, (1996).
 Zimmerli, T. Contact Heat Testing of Dry and Wet Firefighters Gloves, presented at the Quality and Usage of Protective Clothing Symposium, Kittil & Finland, February 5-7, (1992).
 Rossi, R.M., Zimmerli, T. Influence of Humidity on the Radiant, Convective and Contact Heat Transmission Through Protective Materials, Performance of Protective Clothing: Fifth Volume, ASTM STP 1237, J.S. Johnson and S.Z. Mansdorf, eds., American Society for Testing and Materials, West Cgnshohocken, PA, 269-280,(1996).
 Zimmerli, T., Weder, M. 6th Volume, ASTM STP 1273. J.O. Stull and A.D. Schwope, eds., American Society for Testing and Materials, West Conshohocken, PA (in press).
 Veghte, J.H., Fire Technolo, 23, 313-322, (1987).
 Makinen, H., Smolander, J., Vuorinen, H. ASTM STP 989, S.Z. Mansdorf, R. Sager and A.P. Nielsen, eds., American Society for Testing and Materials, West Conshohocken, PA. 415-421 (1988).
 Trong-Ming, D., Chiu, W.Y. Journal of Applied Polymer Science 43(12): 2193-2199, (1991)
 Zhu, Cai, Z.E. Effects of temperature and humidity on the polyurethane propellant aging by FEM. Tuijin Jishu/Journal of Propulsion Technology 18(4), 80-83, (1997).
 Mclntyre, J. E. Aramid fibres. Review of Progress in Coloration and Related Topics 25(1), 44-56, (1995).
 Panar, M., Avakian, P. Morphology of poly(p-phenylene terephthalamide) fibers. Journal of Polymer Science, Polymer Physics Edition 21(10), 1955-1969, (1983).
 Thominette, F., Merdas, I., Verdu J. Ageing of PA 11 pipes in CO2 medium: a tool to predict their residual lifetime, In: Proc. of the twentyfirst international conference on offshore mechanics and arctic engineering. 3, 15–21, (2002).
 Morgan, R.J. Butler Hydrolytic degradation mechanism of Kevlar 49 fibers when dissolved in sulfuric acid Polym Bull, 27, 689–696, (1992).
 Meyer, N. Jones, Y. Lin, D. Kranbuehl Characterizing and modeling the hydrolysis of polyamide-11 in a pH 7 water environment, Macromolecules, 35, 2784–2798,(2002).
 Auerbach I. Kinetics for the degradation of nylon and Kevlar parachute materials. Collection of technical papers – AIAA ninth aerodynamic decelerators and balloon technology conference. 254–262, (1986).