Structure-property analysis for gel-spun, ultrahigh molecular mass polyethylene fibers
Structure-property analysis for gel-spun, ultrahigh molecular mass polyethylene fibers
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DOI：
10.1080/00222349608220375
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发表时间：
1996-02
期刊：
影响因子：
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通讯作者：
Yigang Fu;Wei Chen;M. Pyda;D. Londono;B. K. Annis;A. Boller;A. Habenschuss;Jinlong Cheng;B. Wunderlich
中科院分区：
文献类型：
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作者：
Yigang Fu;Wei Chen;M. Pyda;D. Londono;B. K. Annis;A. Boller;A. Habenschuss;Jinlong Cheng;B. Wunderlich
摘要采用全谱X射线衍射、小角X射线散射、粉末X射线衍射、固态13 C核磁共振、差示扫描量热法和光学显微镜技术研究了四种凝胶纺超高分子量聚乙烯纤维的结构。还研究了高分子量聚乙烯纤维以进行比较。在室温下，这些纤维主要表现为普通的斜方晶体和少量的单斜晶体，除了一个中间，取向相和非晶相。正交相的结构参数随纤维加工历史的变化不大。中间相的链在很大程度上具有反式构象，并且优先平行于纤维轴取向，但横向无序。中间相的碳原子迁移率（相关时间）比晶相的高2个数量级，但比非晶相的低。
Abstract The structures of four gel-spun, ultrahigh molecular mass polyethylene fibers have been studied with the techniques of full-pattern x-ray diffraction, small-angle x-ray scattering, powder x-ray diffraction, solid-state 13C nuclear magnetic resonance, differential scanning calorimetry, and optical microscopy. A high molecular mass polyethylene fiber is also studied for comparison. At room temperature these fibers show mainly the common orthorhombic crystals and a small amount of monoclinic crystals in addition to an intermediate, oriented phase and the amorphous phase. The structure parameters of the orthorhombic phase change slightly with fiber processing history. The chains of the intermediate phase have largely a trans-conformation and are oriented preferentially parallel to the fiber axis, but are disordered laterally. The mobility (correlation time) of the carbon atoms of the intermediate phase is higher than that of the crystalline phase by 2 orders of magnitude, but lower than that of the a...