scholarly journals Process Property Studies of Melt Blown Thermoplastic Polyurethane Polymers for Protective Apparel

2005 ◽  
Vol os-14 (4) ◽  
pp. 1558925005os-14
Author(s):  
Youn Eung Lee ◽  
Larry C. Wadsworth
Keyword(s):  
Thermoplastic Polyurethane ◽  
Elastic Fiber ◽  
Chemical Warfare Agents ◽  
Woven Fabrics ◽  
Process Conditions ◽  
University Of Tennessee ◽  
Structures And Properties ◽  
Film Forming ◽  
Warfare Agents ◽  
The University

The primary goal of this research was to determine optimum processing conditions to produce commercially acceptable melt blown (MB) thermoplastic polyurethane (TPU) non-woven fabrics. The 20-inch wide Accurate Products MB pilot line at the Textiles and Nonwovens Development Center (TANDEC), The University of Tennessee, Knoxville, was utilized for this study. MB TPU webs having small fiber diameters were obtained from film-forming and highly elastic fiber-forming TPUs and the webs were mechanically strong and durable to abrasion compared to MB PP. The basic MB process was found to be fundamentally valid for the MB TPU process; however, the MB process was more complicated for TPU than PP, because web structures and properties of MB TPUs are very sensitive to MB process conditions. Furthermore, different TPU polymers responded very differently to MB processing and exhibited different web structure and properties, although uniform elastic MB webs were produced with average fiber diameters as small as 5.0μm. Preliminary research leading to this study was funded the Army Research Office (ARO) and the findings were used by ARO towards the development of an elastic chemical protective liner with better overall comfort attributes and protection against chemical warfare agents.

scholarly journals Evaluation of Breakthrough Time Of Selected Chemical Warfare Agents Through Protection Materials Under Static Conditions Within the Interlaboratory Methods Comparison

2018 ◽  
Vol 24 (3) ◽  
pp. 162-168
Author(s):  
Pavel Otřísal ◽  
Iva Vošahlíková ◽  
Markéta Weisheitelová ◽  
Jiří Slabotinsky ◽  
Vladimír Obŝel ◽  
...  
Keyword(s):  
Interlaboratory Comparison ◽  
Chemical Warfare Agents ◽  
Chemical Warfare ◽  
Breakthrough Time ◽  
Management Tools ◽  
Comparison System ◽  
Warfare Agents ◽  
Biological Protection ◽  
Static Conditions ◽  
The University

Abstract Based on long-term experiences cooperation between the Laboratory of Toxic Compounds at the National Institute for Nuclear, Chemical and Biological Protection and the Nuclear, Chemical and Biological Defence Institute of the University of Defence in Brno an interlaboratory double-sided comparison has been established in recent time. The interlaboratory comparison of methods is one of several quality management tools according to ČSN EN ISO/IEC 17 025:2005. In the Czech Republic a commercial available comparison system for breakthrough time determination of chemical warfare agents through protection material actually does not exist. In fact the methods are somewhat narrowly focused. Several procedures for evaluation of protection materials properties to drops and steams of soman or sulphur mustard under static conditions have been performed. Detection of chemical warfare agents has been realized by using suitable chromogenic indicator. This article summarises evaluation of the realised interlaboratory comparison

scholarly journals Preparation and Properties of Cotton-Eastar Nonwovens

2003 ◽  
Vol os-12 (2) ◽  
pp. 1558925003os-12
Author(s):  
Haoming Rong ◽  
Gajanan S. Bhat
Keyword(s):  
Great Promise ◽  
Process Conditions ◽  
Structure And Properties ◽  
Thermal Bonding ◽  
University Of Tennessee ◽  
Nonwoven Fabrics ◽  
The Past ◽  
Sustainable Materials ◽  
Novel Applications ◽  
The University

As biodegradable/compostable cotton-based nonwovens are sustainable materials, there is increasing interest in them, with the expansion of nonwovens into novel applications. Over the past few years, research has been done at the University of Tennessee, Knoxville to produce and evaluate nonwoven products containing cotton/cellulose acetate fibers. Nonwoven fabrics manufactured from cotton and Eastar, a biodegradable thermoplastic fiber have shown great promise. The production of nonwovens by the thermal bonding process from such compositions, and the structure and properties of the resulting products are investigated. The results have shown that, by appropriately selecting the combination of fibers and process conditions, nonwoven fabrics with good performance properties can be produced.

NEUROLOGICAL FEATURES IN CHILDREN AND DIPHENYLARSINIC ACID PROBABLY DERIVED FROM CHEMICAL WARFARE AGENTS

2006 ◽  
Vol 37 (S 1) ◽  
Author(s):  
N Iwasaki ◽  
S Miyamoto ◽  
K Ishii ◽  
T Takeda ◽  
T Ohto ◽  
...  
Keyword(s):  
Chemical Warfare Agents ◽  
Chemical Warfare ◽  
Warfare Agents ◽  
Neurological Features

ORGANOPHOSPHORUS NEUROTOXINS

2020 ◽  
Author(s):  
Mariya Andriyanova ◽  
Aslanli Aslanli ◽  
Nataliya Basova ◽  
Viktor Bykov ◽  
Sergey Varfolomeev ◽  
...  
Keyword(s):  
Crop Protection ◽  
Chemical Warfare Agents ◽  
Agricultural Crop ◽  
Current State ◽  
Physicochemical Biology ◽  
Chemical Agents ◽  
Warfare Agents ◽  
History Of ◽  
Physicochemical Methods ◽  
State Of Research

The collective monograph is devoted to discussing the history of creation, studying the properties, neutralizing and using organophosphorus neurotoxins, which include chemical warfare agents, agricultural crop protection chemical agents (herbicides and insecticides) and medicines. The monograph summarizes the results of current scientific research and new prospects for the development of this field of knowledge in the 21st century, including the use of modern physicochemical methods for experimental study and theoretical analysis of biocatalysis and its mechanisms based on molecular modeling with supercomputer power. The book is intended for specialists who are interested in the current state of research in the field of organophosphorus neurotoxins. The monograph will be useful for students, graduate students, researchers specializing in the field of physical chemistry, physicochemical biology, chemical enzymology, toxicology, biochemistry, molecular biology and genetics, biotechnology, nanotechnology and biomedicine.

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