High Strength Metallocene Catalyst-Synthesized Polypropylene Fibers with High Stereoregularity and High Molecular Weight

• Kunimitsu Tatsuma

  Faculty of Textile Science and Technology, Shinshu University

• Warashina Shuji

  Faculty of Textile Science and Technology, Shinshu University

• Ikaga Toshifumi

  Faculty of Textile Science and Technology, Shinshu University

• Kim KyoungHou

  Faculty of Textile Science and Technology, Shinshu University

• Ohkoshi Yutaka

  Faculty of Textile Science and Technology, Shinshu University Institute for Fiber Engineering, Shinshu University

• Koike Katsuhiko

  Prime Polymer Co., Ltd./Mitsui Chemicals Inc.,

抄録

High stereoregularity isotactic polypropylene (iPP) can now be synthesized even using metallocene catalysts. Fibers with higher tensile strength than those of Ziegler-Natta catalyst-synthesized iPP have been reported for iPP with 20 g/10 min melt index. The aim of this study is to further increase the tensile strength using 4 g/10 min melt index iPP. Metallocene iPP fibers with higher tensile strength, higher initial modulus,and lower creep strain at 125 ̊C than Ziegler-Natta iPP fibers were also obtained using 4 g/10 min melt index iPP. Moreover, the obtained maximum tensile strength of 1.39 N/tex (1.3 GPa) was higher than that of 20 g/10 min melt index iPP. The metallocene iPP fibers also had smaller crack diameters estimated by ultra-small angle X-ray scattering.

収録刊行物

• Journal of Fiber Science and Technology

  Journal of Fiber Science and Technology 77 (2), 66-75, 2021-02-15

  一般社団法人 繊維学会

キーワード

• Industrial and Manufacturing Engineering
• Polymers and Plastics
• Materials Science (miscellaneous)
• Chemical Engineering (miscellaneous)

詳細情報

• CRID: 1390568617215982464
• NII論文ID: 130007990693
• DOI: 10.2115/fiberst.2021-0009
• ISSN: 21897654
• Web Site: https://www.jstage.jst.go.jp/article/fiberst/77/2/77_2021-0009/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
  • KAKEN
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