Polylactic acid fiber properties

Polylactic acid fiber has a transparent appearance, comfortable touch and silky luster. It can be dyed with disperse dyes and has a darker color. It combines the characteristics of natural fibers and synthetic fibers, many properties between polyester and nylon 6, such as strength, elasticity, sensitivity, extensibility, hygroscopicity and dyeability are similar to them, sincerely high-strength, extended Good, low modulus fibers. Polylactic acid fiber has good machinability, and its fabric has high strength, good extensibility, soft hand feeling, good drapability, good resilience, and good curling and long-lasting properties, and has good setting properties and anti-wrinkle properties.


Polylactic acid fibers have a lower density than polyester fibers, and they are lighter than nylon 6, and polylactic acid fibers have less moisture absorption. Wu Shi has better wicking properties, making it water-wettable and water-diffusible. The fabric has a dry style and is comfortable to use. Polylactic acid (lower melting point, but with good heat resistance and flame retardancy. Under the long-term irradiation of ultraviolet rays, its strength and elongation changes are 7 I after 500 hours of exposure to the sun, can still maintain 90% of the strength, and in general After 200 hours of solarization, the strength of polyester decreases by about 60%. When it burns, only a slight amount of smoke is emitted, and almost no harmful gas is produced.


The good biodegradability of polylactic acid fiber is the most prominent feature. Due to its non-crystalline structure in the internal structure of fiber, biodegradation is rapid in the presence of water, bacteria and oxygen, and in the soil and cellulose fiber after disposal. Similar decomposition into carbon dioxide and water. And polylactic acid fiber also has antibacterial, anti-mildew, odorless features, can be used as food packaging materials, orange juice drinks more food preservation. Polylactic acid can be absorbed and absorbed in the human body. Therefore, polylactic acid has been widely used in medical bandages, disposable surgical gowns, anti-adhesion films, crepe cloths, and medical fixtures.


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