Dust sticks to fabrics in numerous means, mainly relying on the sort of dirt and textile attributes.
(surfactant powder)
1. Liquid oily dust: generally adsorbed on textiles via van der Waals pressures. Non-polar mineral oil dirt sticks firmly to hydrophobic fibers such as polyester and polypropylene, yet is relatively simple to eliminate on hydrophilic cotton fibers.
2. Water-soluble dirt: adsorbs securely on hydrophilic textiles such as cotton fibers and is challenging to remove, yet is very easy to diminish on hydrophobic fibers such as polyester and polypropylene.
3. Solid dust: The adsorption technique is complex, including being secured by twisted fibers, being wrapped between fibers, and being adsorbed on the concave or smooth surface of the fiber surface.
According to the force category, the bond of dust on materials can be summed up as adheres to:
( surfactants fight dirt adhesion)
1. Mechanical force attachment: strong dust particles adhere to the material with the air circulation, which is affected by the density, structure and fiber characteristics of the textile. This type of dirt is simple to fall off during washing, but it is hard to eliminate when the bit size is less than 0.1 μm.
2. Van der Waals pressure bond: brought on by intermolecular electrostatic destination, induction pressure and diffusion force, it is the primary reason for dust adhesion. Electrostatic destination is particularly considerable between fibers and dust with contrary charges, and multivalent cations can improve this adsorption.
3. Chemical bonding force attachment: Dust forms hydrogen bonds, ionic bonds and other chemical bonds with fibers, such as clay, fats, protein dirt, dyes, ink, etc. Once firmly adhered, it is difficult to eliminate.
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