Protection from chemical, biological and nuclear CBN agents

4 Protection from chemical, biological and nuclear (CBN) agents 

Protection from chemical agents has been accomplished on a regular basis by a variety of means, such as chemical protective suits that include face masks. However, biological enzymes can also be used as a counter-measure to chemical toxins. 

According to Shishoo (2002), the development of protective clothing always involves a trade-off between protection (from heat, cold, chemicals, and microbes) and comfort characteristics such as thermal resistance, liquid barrier, and water vapor permeability. The comfort and barrier characteristics often conflict with each other. Shishoo emphasizes the need to have a better balance of different properties such as drape, heat resistance, water vapor permeability, elasticity, and barrier properties.  

Textile fibers such as nylon and Kevlar have been used extensively in protective garments for military personnel. Some of the important properties that 

Defense communities have invested much effort over the years to enhance the safety of their soldiers. The major focns is to develop an omniphobic fabric, a super-non-wetting fabric that is resistant to the penetration of all liqitids, inclnding water, alcohols, solvents, hydrocarbons, and hazardous chenticals. The characteristics of such a fabric include 1) surface chemistry that creates a higher 

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