... to the BDO liner. trichloroethylene CAS # 79-01-6 cotton polypropylene melt blow spunbond nonwoven activated carbon protective clothing battle dress overgarment BDO military chemical warfare Maureen Dever, l Derong Tu, ~and Wayne T. Davis2 Trichlorethylene Vapor Adsorption by Nonwovens...

... are currently in service. Lastly, the standard should consider using the glass transition temperature to monitor changes in membranes due to aging/weathering. roofing membrane single-ply roofing thermoplastic olefin thermoplastic polyolefin TPO polyethylene polypropylene flexible polyolefin FPO...

... During the thermal oxidation of polyolefins, exemplified by isotactic polypropylene, few observable physical and chemical changes occur until embrittlement or similar failure. The increasing oxidative and auto-oxidative behavior that accompanies oxidation can be measured as a reducing oxidation...

... was investigated in order to provide some appreciation of the sources of variability. This paper presents the results and observations from an inter-laboratory study that determined tensile modulus of stiff polypropylene geogrids. Various test parameters and procedures affecting the measured results...

... The paper describes the two major degradation mechanisms of geosynthetics: oxidation of polyolefins (polyethylene and polypropylene), and hydrolysis of polyester (polyethylene terephthalate). These are the polymers which comprise the vast majority of geotextiles and geogrids used for soil...

... The purpose of this study was to determine whether layering fabrics which are readily available to agricultural workers would reduce penetration of methyl parathion. The fabrics used were cotton denim, cotton printcloth, cotton jersey knit, and polypropylene knit. The two chemically-different...

... An investigation in two phases was conducted to characterize and evaluate the cause(s) of field deterioration of both black and white nonwoven polypropylene geotextiles in a municipal landfill. A preliminary determination was made in the first phase that the observed decay varied between...

... Characteristics of diverse polymers used as pile ribbon, backing yarns, and shock-absorbing pads in artificial turf systems are examined. Particular attention is directed toward end-use performance in the major commercial systems of polypropylene or nylon 66 pile ribbon combined...

... This article describes the determination of vanadium in crude oils, iron in pitch, and titanium in polypropylene. The sample is placed into a pyrolytically coated graphite microboat and pyrolyzed in an air-acetylene flame. The microboat is then inserted into the cuvette of a flameless atomizer...

... The chemical effects of near ultraviolet light (equivalent to that in terrestrial sunlight) on polypropylene and on poly(ethylene terephthalate) are described in some detail with particular emphasis on identification of the important primary bond-breaking reactions. It is shown that the critical...