Dust follows textiles in numerous methods, mostly relying on the sort of dust and material characteristics.
(surfactant powder)
1. Liquid oily dust: mostly adsorbed on fabrics with van der Waals forces. Non-polar mineral oil dust sticks securely to hydrophobic fibers such as polyester and polypropylene, however is relatively very easy to remove on hydrophilic cotton fibers.
2. Water-soluble dirt: adsorbs securely on hydrophilic textiles such as cotton fibers and is challenging to get rid of, yet is very easy to fall off on hydrophobic fibers such as polyester and polypropylene.
3. Solid dust: The adsorption method is intricate, including being secured by twisted fibers, being wrapped between fibers, and being adsorbed on the concave or smooth surface area of the fiber surface.
According to the force category, the attachment of dirt on fabrics can be summed up as follows:
( surfactants fight dirt adhesion)
1. Mechanical force attachment: strong dirt bits comply with the material with the air flow, which is influenced by the thickness, texture and fiber characteristics of the textile. This sort of dirt is very easy to fall off during washing, however it is tough to get rid of when the particle dimension is less than 0.1 μm.
2. Van der Waals force bond: triggered by intermolecular electrostatic tourist attraction, induction pressure and dispersion pressure, it is the main factor for dirt adhesion. Electrostatic attraction is specifically considerable between fibers and dust with opposite charges, and multivalent cations can improve this adsorption.
3. Chemical bonding pressure bond: Dust forms hydrogen bonds, ionic bonds and other chemical bonds with fibers, such as clay, fats, protein dirt, dyes, ink, and so on. Once securely adhered, it is challenging to eliminate.
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