Just look at the original properties of the fiber
Cotton is really skin-friendly
The primary factor affecting the "skin-friendly" is that the fabric should have hygroscopicity, and hygroscopicity can refer to the "common moisture regain" of the fiber. The higher the moisture regain, the better the hygroscopicity.
Because people's skin should be moist and comfortable, such as dry winter to oil, clothes are the same, the higher the moisture recovery rate of the fabric, can absorb more moisture in the air, the skin is also more comfortable to contact.
Light at the initial state of moisture regain, indeed verified everyone's impression: cotton, silk moisture absorption is relatively strong, better than polyester and other chemical fibers skin-friendly feeling. (but viscose as a chemical fiber, moisture regain is not bad oh)
But after processing
Chemical fibers are just as skin-friendly
With the rapid development of textile technology, we can now improve the moisture regain and other indexes of chemical fiber through more diverse clothing processing and finishing methods, so that their skin-friendliness is getting better and better, even better than cotton.
This benefits from the biggest characteristic of chemical fiber -- very strong processability, from synthetic formula to spinning preparation to dyeing and finishing processing, can change the nature according to our needs, to provide a variety of functions.
For example, a few decades ago, traditional polyester was a non-hydrophilic plastic thread, but the modern textile industry can introduce hydrophilic chemical groups in the synthesis of polyester to improve its hygroscopicity. Polyester acrylic fiber itself is prone to static electricity, but regular manufacturers will do antistatic finishing, additional cost is not high, the effect is immediate; You can also use false twist deformation silk process when spinning, so that the original elasticity is not obvious polyester become fluffy and elastic.
That is to say, if you only look at the fiber composition of modern textiles, it can not fully reflect the skin-friendly characteristics of fabrics. Pure cotton skin friendly, chemical fiber can be the same.
When you sweat a lot
Chemical fiber is actually better than cotton
Cotton is breathable, hygroscopic and cool, but only if you're not sweating too much.
When there is a lot of sweat, such as during exercise or in hot weather, the biggest drawback of pure cotton is revealed: poor moisture conductivity, sweat is difficult to evaporate.
Because cotton fiber after contact with a lot of moisture will hygroscopic expansion, coupled with the sweat of the block, can be breathable hole blocked, breathability is not good.
If you've ever played basketball, soccer, or any other strenuoussport in a cotton shirt, you know this: When you sweat a lot, your clothes stick to your skin, revealing your body shape in an instant. It's also slimy and annoying.
Source: Hua Xian tou Tiao
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