Activated carbon fibres based on non-woven precursors for applications as protective mask

摘要

Activated carbons are high surface area, high porosity materials showing ability to adsorb chemicals from liquid or gaseous media. Activated carbons are traditionally available in powder or granular form. Activated carbons in fibre forms (ACF) are a later development and dominated textile based applications for chemical protection, because of superior adsorption properties.rnThe ACF are made from polymeric precursors by controlled carbonisation/activation. However, presently used precursors are made from expensive precursors like Viscose filament based fabrics. This has restricted their usage in applications other than defence and it is well known that workers in Agro, Pharma, Chemical and even the common man are exposed to hazardous chemicals. The need to protect them against hazardous chemicals should not be overlooked. Therefore, in the present study an attempt has been made to develop ACF using cheaper polymeric precursors like viscose fibres in non-woven form and also viscose fibre wastes in nonwoven form were used as precursor for developing cheaper ACF.