2012•Synthetic Fiber in ChinaRequires access

Study on the Thermal Property Testing of Local Made Polylactic Acid Fibers

Yabin Li

Abstract

TG and DSC are used to analyze the thermal property of polylactic acid(PLA) fibers and compared with polyester(PET) fibers.The heat shrinkage and limited oxygen index of the PLA fibers are also tested.The investigation showes that as the temperature increases,the PLA fibers′ TG curves appear two weight loss bands.It begins to decompose at about 330 ℃,and the main weight loss temperature is about 360 ℃.Compared with PET fibers,the PLA fibers′ DSC curve appears double melting peaks.The higher melting peak appears at 169.9 ℃,and the lower one appears at 161.6 ℃.The heat shrinkages of PLA fibers in boiling water and hot air are 12 % and 4.5 % respectively.The limited oxygen index of the PLA fiber is 27 %.

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Key concepts: Polylactic acid, Materials science, Composite material, Polyester, Fiber, Boiling, Shrinkage, Oxygen