Animal fibres, oily

Animal fabrics, oily Animal fibres, burnt, wet or damp Animal fibres, oily Bhusa,... 

Detergency is about the theory and practice of the removal of foreign material from solids by surface-active substances. This definition excludes pure mechanical cleaning. Also a pure chemical cleaning, e.g., by solvation of the foreign material, is not considered. In textiles oily substances usually attach to the fibres (animal fats, fatty acids, hydrocarbons, etc.). Also dust, soot, and other solid particles have to be removed in a washing process. In order to test the effectiveness of a surfactant, textiles are often polluted with standard dirt mixtures and cleaned with a standard washing procedure (launderometer). Often cleanliness is measured on the basis of optical reflectivity of white textiles. 

Plant oils and animal fat are mostly unsatured fatty acids. Some of these oily products are already well known by the public from their use in paint (e.g., flax (linseed) tung oils are drying oils used in paints, varnishes and enamels) or in soaps, detergents, cosmetics and lubricant applications. Plant oils increasingly become a source of raw material to produce thermoset resins that can be mixed widi natural fibres in order to achieve light and resistant composite materials. The combination of bio-based resins with natural fibres (plant and poultry) or... 

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