Nanoperiodic Arrangement of Crystal/Amorphous Phases Induced by Tensile Drawing of Highly Entangled Polyethylene
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- 作者：Hiroki Uehara ; Kei-ichi Takeuchi ; Masaki Kakiage ; Takeshi Yamanobe ; Tadashi Komoto
- 刊名：Macromolecules
- 出版年：2007
- 出版时间：August 7, 2007
- 年：2007
- 卷：40
- 期：16
- 页码：5820 - 5826
- 全文大小：1421K
- 年卷期：v.40,no.16(August 7, 2007)
- ISSN：1520-5835
文摘
A nanoperiodic crystalline/amorphous arrangement was homogeneously developed by tensiledrawing and subsequent annealing of ultrahigh molecular weight polyethylene (UHMW-PE) lamellae, trappinga large number of molecular entanglements on their surfaces. Lozenge crystalline blocks 40 nm in edge appearedregularly packed, producing the meshlike amorphous channels 5 nm wide. A grid-rotation analysis based ontransmission electron microscopy observations indicated characteristic bicontinuous arrangements of crystallineand amorphous phases. The results of the small-angle X-ray scattering measurements for the drawn sample alsosupported this unique phase packing model.