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武汉理工大学学报-材料科学版(英文版), 2010, 25(2): 200-205.
10.1007/s11595-010-2200-7

1, , 2, , 3, , 4, , 5,

1.School of Material Science and Engineering, University of Jinan, Ji'nan 250022, China;
2.School of Material Science and Engineering, University of Jinan, Ji'nan 250022, China;
3.School of Material Science and Engineering, University of Jinan, Ji'nan 250022, China;
4.School of Material Science and Engineering, University of Jinan, Ji'nan 250022, China;
5.School of Material Science and Engineering,Shandong University, Ji'nan 250061, China
The evolvement of microstructure and properties of nascent fibers during coagulation process in the polyacrylonitrile (PAN) wet-spinning and the effect of coagulation bath conditions on the structure and properties of the nascent fibers were investigated by the means of X-ray diffraction (XRD), scanning electron microscope (SEM), fiber fineness machine, fiber tensile strength machine, etc. The experimental results indicate that the nascent fibers become denser and have fewer inner defects, the diameter of nascent fibers shrink and the crystallization degree of nascent fibers gradually increases with the increasing of coagulation time. Too large spinning tension leads to grooves occurring on surface of fibers. To obtain circular cross-section of nascent fibers the optimal coagulation conditions are 50℃, 65% (concentration) and 0.9 (draw ratio).
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引用： , , , , . 武汉理工大学学报-材料科学版(英文版), 2010, 25(2): 200-205. doi: 10.1007/s11595-010-2200-7
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