Stains on Wedding Dress: How do they get on my Dress & How to remove stains?
How does stains get on my Wedding Dress?
Under the law of Physics, there is always an attraction force between any objects, and the force can be large or small. Stains will be adsorbed on the garment after it comes into contact with it. The mechanism of the combination is physical and chemical.
1) Mechanical adsorption
Mechanical adsorption is the combination of stain and Wedding Dress. It is a simpler form. It mainly refers to the dust particles floating in the air scattered in the holes of the fabric, the folds of the Wedding Dress, and the splicing tabs. The edges and the gap between the yarns and other places cannot be absorbed. This adhesion is related to the structure, density, thickness, surface treatment, dyeing and finishing of the Dress material.
For example, the surface of the sparse fabric has obvious unevenness and therefore, stain particles are can easily be attached. The dense fabric is not easy to accumulate dust and stain, but it is also difficult to wash off the stain particles. This type of stain can be dealt with by mechanical methods such as the impact of water during the washing process and the friction between materials. The mechanical absorption of stain is destroyed, so that the stain will fall off the wedding dress and achieve the purpose of decontamination. However, this method has certain difficulties for stain particles below 1um.
2) Physical Binding
The interaction force between physical binding molecules is the main cause of stains on Wedding Dresses. For example, body oil particles are attached to the fibers by intermolecular forces. They can easily penetrate the fibers. Stain particles are often electrically charged.
When the stain comes in contact with a dress material with opposite charges, the surplus between each other becomes stronger. This form is more obvious for chemical fibers. Chemical fiber fabrics often have a fixed charge due to friction. Therefore, it is easy to absorb stain with opposite charges. There are often traces of multivalent metal salts in the water, such as calcium and magnesium ions. The negatively charged fibers interact strongly with the positively charged stain through calcium and magnesium ions. The removal of this kind of stain from Wedding Dresses requires a certain amount of detergent.
3) Chemical combination
The chemical combination of stain and wedding dress does not generate a new substance, but refers to the fatty acid, milk, protein and other suspended or dissolved liquids that penetrate into the fiber. The stain and some of the fiber molecules are combined through certain chemical bonds, which is attached to the fabric, just like dyeing. This kind of stain is generally difficult to remove, and special chemicals must be used to destroy the strong chemical bonding.
For example, blood stains on the fabric can be decomposed and removed by protein enzymes. Iron rust stains can be made using the reducing properties of oxalic acid. It is converted into iron oxalate and removed.