Effect of Cross-Sectional Configuration on Fiber Formation Behavior in the Vicinity of Spinning Nozzle in Bicomponent Melt Spinning Process
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- Chen Yiwen
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
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- Takarada Wataru
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
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- Kikutani Takeshi
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
抄録
<p>To investigate the fundamental melt spinning behavior of the islands-in-the-sea (S/I) fibers,bicomponent melt spinning of polystyrene (PS) and polypropylene (PP) with the composition of 1 : 1 was performed using a spinning pack for preparation of S/I fibers with 1519 islands in the fiber cross-section. The sheath-core (S/C) fibers and blend fibers of the same composition were also prepared for comparison. The reduction ratio of the cross-sectional area of polymer flow from the position of the confluence of two polymer flows to the die exit for the sheath-core type spinning pack is 16 : 1, whereas that for the islands-in-the-sea type spinning pack is 3200 : 1. In this research, particular attention was paid to the behavior of polymer flow in the vicinity of spinneret. Magnitude of die-swell decreased with the increase of extrusion temperature. It was also found that the swelling was more significant for the S/I spin-line in comparison with that for the S/C spin-line. When the S/C and S/I components were exchanged from PS/PP to PP/PS, the swelling behavior of S/C spinline decreased whereas that of S/I spin-line did not show any significant change. On the other hand, magnitude of die-swell for the blend spinning was larger than that for the S/I and S/C spinnings and increased with the increase of extrusion temperature. The distance from the spinneret surface to the position of maximum spinline diameter increased in the order of S/C<S/I<blend. These results suggested that the swelling effect in the S/C and S/I spinning is governed by the viscoelastic effect whereas that in the blend spinning is caused mainly by the interfacial tension between the two components.</p>
収録刊行物
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- Journal of Fiber Science and Technology
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Journal of Fiber Science and Technology 72 (7), 154-159, 2016
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詳細情報 詳細情報について
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- CRID
- 1390001205763395968
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- NII論文ID
- 130005165385
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- ISSN
- 21897654
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可