Mechanism for anisotropic thermal expansion of polyamide fibers

Daisuke Kimura, Toshihira Irisawa, Kentaro Takagi, Kenji Tahara, Daichi Sakurai, Haruhiko Watanabe, Wataru Takarada, Masatoshi Shioya

研究成果: Contribution to journalArticle査読


This paper examines the validity of the contribution of entropy elasticity, which has been vaguely considered to be the main cause of the thermal expansion behavior of the untwisted fiber. Thereafter, we indicate the inconsistencies and propose a new possible physical principle. A new high-order structural model that can effectively cause anisotropic thermal expansion of fibers is proposed. The observed results verify our proposal, and further show its validity and correctness. The twisted fiber actuator, which has garnered significant attention in recent years, is driven by the anisotropic thermal expansion of an untwisted fiber, which is the precursor of the twisted fiber. Analyzing the physical principle of the thermal expansion behavior of the untwisted fiber is to obtain the knowledge for improving performance of the actuator.

ジャーナルSensors and Actuators, B: Chemical
出版ステータス出版済み - 10 1 2021

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 器械工学
  • 凝縮系物理学
  • 表面、皮膜および薄膜
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学


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