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As people 's living standards improve , people began to become increasingly concerned about their own health and living environment . Polylactic acid (PLA) fiber is a new type of polyester fiber biodegradable , even wheat straw and other resources to the agricultural products such as corn , wheat , sugar beet , cassava starch - containing raw materials by fermentation into lactic acid , and then the polymerization , melt together . spinning process and made ??into fiber , which has good strength and elastic recovery , nice soft drape , moisture , and skin-friendly , anti-bacterial , etc. , in the clothing industry and the field of decorative have a good prospect of application . In this thesis , on the basis of the detailed understanding of polylactic acid fiber morphology and physical mechanical properties and functions , research points and measures of polylactic acid fiber spun core yarn process by orthogonal experiment to find the the spinning optimal process parameters , and designed four different specifications of the yarn, the core yarn designed several different specifications , organization , yarn fabric and wearability of cotton fiber , viscose fiber , polyester fabrics tested the comparative analysis of selected nine indicators , mainly from three angles of the mechanical properties , appearance, performance and comfort performance test . Last method of fuzzy mathematics comprehensive assessment of the performance of the fabric of an objective, quantitative evaluation , and as a basis to draw the fabric yarn raw material , yarn structure, fabric structure , specifications , and other factors of various fabric the impact of the performance . The study showed that the polylactic acid core yarn spinning optimal process parameters : twist 950 twist / m, back draft multiple of 1.30 -fold , spindle speed of about 11000r/min . Polylactic acid fabric has a high bursting strength , excellent guide drenched wet performance and drape , but there are also prone to static , anti- pilling affected by polylactic acid fiber and viscose fiber mix can be effective in reducing the effects of static electricity . Polylactic acid fiber fabric or higher levels of polylactic acid fiber fabric performance is better, has a toning , breathable , guide wet advantages, particularly suited to the development of summer apparel fabrics . With the strengthening of the people's health , environmental protection and energy-conscious , future research and development of polylactic acid fiber fabric , is bound to have significant social and economic benefits .
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