Accelerated multistep thermal stabilization of polyacrylonitrile fibers using an ethylenediamine pretreatment
Kemal Şahin Tunçel,
Tuba Demirel,
Ismail Karacan
Abstract:The polyacrylonitrile multifilament yarn underwent a multistep heat treatment process including stabilization times ranging from 5 to 75 min following impregnation with a 30% ethylenediamine (EDA) aqueous solution. A series of measurements were employed to determine the structure and properties of thermally stabilized PAN samples. These included fiber thickness, fiber density, flame testing, tensile testing, X-ray diffraction, thermal analysis (differential scanning calorimetry and thermogravimetric analysis),… Show more
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