Melt spinning and characterization of hollow fibers from poly(4‐methyl‐1‐pentene),Journal of Applied Polymer Science

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Melt spinning and characterization of hollow fibers from poly(4‐methyl‐1‐pentene)
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-07-06 , DOI: 10.1002/app.49630
Martin Pelzer ₁ , Thomas Vad ₁ , Amrei Becker ₁ , Thomas Gries ₁ , Svetlana Markova ₂ , Vladimir Teplyakov ₂

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In this article, the melt spinning behavior of poly(4‐methyl‐1‐pentene) (PMP) hollow fibers (HF) is examined. The melt spinning trials are carried out on a pilot scale melt spinning plant with different settings while a 10‐hole 2c‐shaped spinneret is used. It is found that the winding speed mainly affects the outer fiber diameter. The influence of different melt spinning parameters is investigated, in particular temperatures, take‐up velocities, and the use of quench air. For this purpose, the shape and crystalline structure of the fibers are analyzed using a light microscope, a scanning electron microscope, and wide‐angle X‐ray scattering. The shape of the fibers is mainly influenced by the temperature settings in the melt spinning process. As a reasonable lower limit, a melt spinning temperature of 280°C is identified. Concerning the crystallinity, a saturation going along with a slight reduction of the polymer chain orientation is observed at elevated take‐up velocities.

中文翻译：

聚（4-甲基-1-戊烯）中空纤维的熔融纺丝和表征

在本文中，研究了聚（4-甲基-1-戊烯）（PMP）中空纤维（HF）的熔融纺丝行为。熔体纺丝试验是在具有不同设置的中试熔体纺丝厂进行的，同时使用了10孔2c形喷丝头。发现卷绕速度主要影响纤维的外径。研究了不同熔体纺丝参数的影响，特别是温度，卷绕速度和急冷空气的使用。为此，使用光学显微镜，扫描电子显微镜和广角X射线散射分析纤维的形状和晶体结构。纤维的形状主要受熔融纺丝过程中温度设置的影响。作为合理的下限，确定的熔体纺丝温度为280℃。

更新日期：2020-07-06

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