Dust complies with fabrics in numerous ways, mainly depending on the kind of dirt and fabric features.
(surfactant powder)
1. Fluid oily dirt: mainly adsorbed on materials through van der Waals pressures. Non-polar mineral oil dirt sticks securely to hydrophobic fibers such as polyester and polypropylene, however is relatively easy to eliminate on hydrophilic cotton fibers.
2. Water-soluble dust: adsorbs firmly on hydrophilic textiles such as cotton fibers and is difficult to get rid of, but is very easy to fall off on hydrophobic fibers such as polyester and polypropylene.
3. Strong dirt: The adsorption technique is complex, consisting of being secured by twisted fibers, being covered between fibers, and being adsorbed on the concave or smooth surface of the fiber surface area.
According to the force category, the bond of dirt on textiles can be summed up as adheres to:
( surfactants fight dirt adhesion)
1. Mechanical force bond: solid dirt bits comply with the textile with the air circulation, which is impacted by the density, texture and fiber characteristics of the textile. This type of dirt is simple to fall off throughout washing, but it is challenging to get rid of when the particle size is less than 0.1 μm.
2. Van der Waals force bond: caused by intermolecular electrostatic destination, induction pressure and diffusion pressure, it is the primary factor for dust adhesion. Electrostatic tourist attraction is particularly substantial between fibers and dirt with contrary costs, and multivalent cations can enhance this adsorption.
3. Chemical bonding force bond: Dust kinds hydrogen bonds, ionic bonds and other chemical bonds with fibers, such as clay, fats, healthy protein dust, dyes, ink, and so on. As soon as firmly bonded, it is hard to eliminate.
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