論文 Tensile strength of polyester fiber estimated by molecular-chain extension prior to structure formation Scientific Reports,13:11759 2023(Jun.) Author:Ren Tomisawa, Mutsuya Nagata, Yumu Otsuka, Toshifumi Ikaga, KyoungHou Kim, Yutaka Ohkoshi, Kazuyuki Okada, Toshiji Kanaya, Hiroo Katsuta
X-ray Computed Tomography Observations of Multi-Hollowed Fibers Produced by CO2 Laser-Heated Drawing Journal of Fiber Science and Technology,78(7):121-125 2022(Jul.) Author:Takuma Isshiki, Hidenori Yamazaki, Toshifumi Ikaga, Kyoung-Hou Kim, Yutaka Ohkoshi
High Strength Fiber obtained from a High Stereoregularity Metallocene Catalyst-Synthesized Polypropylene Polymer,202:122654 2020(Aug.) Author:Kunimitsu Tatsuma, Toyoda Kai, Ikaga Toshifumi, Kim KyoungHou, Ohkoshi Yutaka, Koike Katsuhiko
Effects of melt-spinning speed on structure development of polypropylene fiber after necking Journal of Fiber Science and Technology,76(5):161-169 2020(May) Author:Koike Naoki, Tomisawa Ren, Ikaga Toshifumi, Kim KyoungHou, Ohkoshi Yutaka, Okada Kazuyuki, Masunaga Hiroyasu, Kanaya Toshiji, Katsuta Hiroo, Funatsu Yoshitsugu
Effects of dimensions and regularity on the mechanical properties of the smectic phase formed during orientation-induced crystallization of poly(ethylene terephthalate) Polymer,164:163-173 2019(Jan.) Author:Ren Tomisawa, Shun Oneda, Toshifumi Ikaga, Kyoung-Hou Kim, Yutaka Ohkoshi, Kazuyuki Okada, Hiroyasu Masunag, Toshiji Kanaya, Hiroo Katsuta, Yoshitsugu Funatsu
Crystallization, orientation, and mechanical properties of laserheated photothermally drawn polypropylene/multi-walled carbon nanotube fibers European Polymer Journal,91:70–80 2017 Author:Byung Hak Lee, Jae Whan Cho, Kyoung Hou Kim
Fiber structure development of Nylon 6 after necking J. Fiber Sci. Technol.,73(1):19-26 2017 Author:Kyoung-Hou Kim, Yutaka Ohkoshi, Akira Wakasugi, Aya Komoriya, Toshifumi Ikaga, Isao Wataoka, Hiroshi Urakawa, Masato Masuda, Yuhei Maeda
Effect of draw ratio on fiber structure development of polyethylene terephthalate Polymer,116:357-366 2017 Author:R. Tomisawa, T. Ikaga, K.H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, M. Masuda, Y. Maeda
Effect of melt spinning conditions on the fiber structure development of polyethylene terephthalate Polymer,116:367-377 2017 Author:R. Tomisawa, T. Ikaga, K.H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, M. Masuda, Y. Maeda
Fiber Structure Development of Syndiotactic Polystyrene after Necking during the Laser-Heated Drawing Process J. Fiber Sci. Technol.,73(7):158-169 2017 Author:Gaku Matsuno, Toshifumi Ikaga, Kyoung-Hou Kim, Yutaka Ohkoshi, Takeharu Tajima, Hideaki Yamaguchi, Isao Wataoka
Visualization of a pillar-shaped fiber bundle in a model needle-punched nonwoven fabric using X-ray micro-computed tomography Textile Research Journal,87(11):1387–1393 2017 Author:Tatsuya Ishikawa, KyoungHou Kim, Yutaka Ohkoshi
Structure and Mechanical Properties of Multi-Hollowed Fibers Produced by CO2 Laser Irradiated Neck Drawing POLYMER ENGINEERING AND SCIENCE,56(6):609–616 2016 Author:Young-Ah Kang, Xin Zhao, Yutaka Ohkoshi, Kyoung Hou Kim
Fabrication of Hollowed Polytrimethylene Terephthalate Fiber by Carbon Dioxide Laser Irradiation POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING,55(6):553–558 2016 Author:Young-Ah Kang, Yutaka Ohkoshi, Kyoung-Hou Kim
Orientation and Mechanical Properties of Laser-Induced Photothermally Drawn Fibers Composed of Multiwalled Carbon Nanotubes and Poly(ethylene terephthalate) Journal of Polymer Science : Polymer Physics,54(5):603–609 2016 Author:Jin Wuk Hur, Hye Jin Yoo, Jae Whan Cho, Kyoung Hou Kim
Response of fiber diameter to a continuously changing draw ratio in a laser drawing process Textile Research Journal,86(10):1074-1083 2016 Author:Munekazu Matoba, Yutaka Ohkoshi, Kyoung Hou Kim and Toshifumi Ikaga
Fiber structure development in PS/PET sea-island conjugated fiber during continuous laser drawing Polymer,79:37-46 2015 Author:K. Sugawara, T. Ikaga, K.H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga,T. Kanaya, M. Masuda, Y. Maeda
Structure and Mechanical Properties of Poly(trimethylene terephthalate) Fibers Obtained by CO2 Laser Drawing and a Secondary Contact Heater Drawing SEN-I GAKKAISHI,69(6):107-117 2013(Jun. 30) Author:Young-Ah Kang, Kyoung-Hou Kim, Xin Zhao, Yang Hun Lee, Toshifumi Ikaga, Yutaka Ohkoshi
In situ study of fiber structure development of poly(butylene terephthalate) in a continuous laser-heated drawing process POLYMER JOURNAL,44(10):1030-1035 2012(Oct.) Author:Kim, KH; Kang, YA; Yokoyama, A; Ikaga, T; Ohkoshi, Y; Wataoka, I; Urakawa, H
Effect of drawing stress on mesophase structure formation of poly(ethylene 2,6-naphthalene dicarboxylate) fiber just after the neck-drawing point POLYMER,53(19):4272-4279 2012(Aug.) Author:Kim, KH; Aida, R; Kang, YA; Ikaga, T; Ohkoshi, Y; Wataoka, I; Urakawa, H
Effects of carbon nanotube functionalization and annealing on crystallization and mechanical properties of melt-spun carbon nanotubes/poly(ethylene terephthalate) fibers Composites Science and Technology,72(15):1834-1840 2012 Author:Hye Jin Yoo, Kyoung Hou Kim, Santosh Kumar Yadav, Jae Whan Cho
In-situ analysis of fiber structure development for isotactic polypropylene POLYMER,52(9):2044-2050 2011(Apr.) Author:Kang, YA; Kim, KH; Ikehata, S; Ohkoshi, Y; Gotoh, Y; Nagura, M; Urakawa, H
Microsecond Analysis of Quasi-Smectic Fibrillar Structure in the Continuous Fiber Drawing of Poly(ethylene terephthalate) Macromolecules,44(18):7378-7384 2011 Author:Kyoung-Hou Kim, Takahisa Murata, Young-Ah Kang, Yutaka Ohkoshi, Yasuo Gotoh, Masanobu Nagura, Hiroshi Urakawa
Development of a fiber structure in poly(vinylidene fluoride) by a CO(2) laser-heated drawing process POLYMER JOURNAL,42(8):657-662 2010(Aug.) Author:Kang, YA; Kim, KH; Ikehata, S; Ohkoshi, Y; Gotoh, Y; Nagura, M; Koide, M; Urakawa, H
Fiber Structure Development in High-Speed Melt Spinning of Poly(trimethylene terephthalate) (Ⅰ) - On-line Measurement of Birefringence- Journal of Polymer Science: Part B: Polymer Physics,46:847-856 2008 Author:Kyoung Hou Kim, Hyun Hok Cho, Hiroshi Ito, Takeshi Kikutani
Initial Stage of Fiber Structure Development in the Continuous Drawing of Poly(ethylene terephthalate) Journal of Polymer Science: Part B: Polymer Physics,46:2126-2142 2008 Author:Takayoshi Yamaguchi, Kyoung-Hou Kim, Takahisa Murata, Mitsuharu Koide, Shuuji Hitoosa, Hiroshi Urakawa, Yutaka Ohkoshi, Yasuo Gotoh, Masanobu Nagura, Masaru Kotera, Kanji Kajiwara
Effect of Vibration on Drawing and Annealing of High-Speed Spun Poly(trimethylene terephthalate) Fiber e-Polymers,023:1-14 2007 Author:Kyoung Hou Kim, Yang Hun Lee, Hyun Hok Cho, Takeshi Kikutani
Effect of Low-Temperature Annealing on Dimensional Stability of Poly(ethylene 2,6-naphthalene dicarboxylate)Fibers Melt-Spun at High Speed Journal of Applied Polymer Science,95:212-218 2005 Author:Young Ah Kang, Kyoung Hou Kim, Hyun Hok Cho, Takeshi Kikutani
Structural development of poly(ethylene 2,6-naphthalene dicarboxylate) film upon solvent drawing Journal of Applied Polymer Science,88:1357-1365 2003 Author:Young Ah Kang, Kyoung Hou Kim, Yang Hun Lee, Jang Oo Lee, Hyun Hok Cho
Fine structure formation and physical properties of poly(butylene terephthalate) fibers in high-speed melt spinning e-Polymers,027:1-12 2003 Author:Sun Hee Lee, Kyoung Hou Kim, Takeshi Kikutani, Hyun Hok Cho
Fine-structure and physical properties of polyethylene fibers in high-speed spinning. I. Effect of melt-flow rate in the high-density polyethylene Journal of Applied Polymer Science,77:1182-1194 2000 Author:H. H. Cho, K. H. Kim, H. Ito, T. Kikutani
Fine-structure and physical properties of polyethylene fibers in high-speed spinning. II. Effect of catalyst systems in linear low-density polyethylene Journal of Applied Polymer Science,77:1195-1206 2000 Author:H. H. Cho, K. H. Kim, H. Ito, T. Kikutani
Fine structure and physical properties of polyethylene/ poly(ethylene terephthalate) bicomponent fibers in high-speed spinning. I. Polyethylene sheath/ poly(ethylene terephthalate) core fibers Journal of Applied Polymer Science,77:2254-2266 2000 Author:H. H. Cho, K. H. Kim, Y. A. Kang, H. Ito, T. Kikutani
Fine structure and physical properties of polyethylene/ poly(ethylene terephthalate) bicomponent fibers in high-speed spinning. II. Poly(ethylene terephthalate) sheath/polyethylene core fibers Journal of Applied Polymer Science,77:2267-2277 2000 Author:H. H. Cho, K. H. Kim, Y. A. Kang, H. Ito, T. Kikutani
講演・口頭発表等 Effect of processing conditions on internal structure of nonwoven fabrics The 16th Asian Textile Conference 2023(Jul. 29) Presenter:KyoungHou Kim
Structure evaluation of the both sides needle-punched nonwoven fabric with using tracer fiber visualized by X-ray CT The 49th Textile Research Symposium 2022(Oct. 09) Presenter:Sakika Nakmura, Ryo Wakamatsu, Ren Tomisawa, KyoungHou Kim, Yutaka Ohkoshi
Effect of annealing on the structure and properties of nonwoven fabrics produced by Polypropylene / Poly(ethylene terephthalate) bicomponent melt-blowing using different diameter nozzle The 49th Textile Research Symposium 2022(Oct. 09) Presenter:Rina Tomita, Akihiro Makimura, Kosuke Sugawara, Toshifumi Ikaga, Ren Tomisawa, KyoungHou Kim, Yutaka Ohkoshi
Physical properties of non-woven fabrics prepared by PP/PET mixed melt blowing 15th Asian Textile Conference 2019(Sep. 26) Presenter:Koki IMANARI, Ryoko SUGITA, KyoungHou KIM, Yutaka OHKOSHI
Structure change of needle punched non-woven fabrics applied tensile deformation analyzed by the X-ray CT 15th Asian Textile Conference 2019(Sep. 26) Presenter:Yohei HASEGAWA, Hibiki TONOSAKI, Kyoung Hou KIM, Yutaka OHKOSHI
Effects of additives on the tensile and knot-pull strength of polypropylene fibers 15th Asian Textile Conference 2019(Sep. 26) Presenter:Tatsuma Kunimitsu, Chisa Ikeda, Shuntaro Oshima, Toshifumi Ikaga, KyoungHou Kim, Yutaka Ohkoshi, Masayuki Takata, Tomoyoshi Yamashita
Structure analysis of needle-punched nonwoven fabric by X-ray computed tomography: Effect of needling on the structure and properties ATC-14 2017 Presenter:Tatsuya Ishikawa, Yujiro Isi, Kengo Nakasone, KyoungHou Kim, Yutaka Ohkoshi
Effects of spinning conditions on the structure development and properties of poly(ethylene terephthalate) fiber ATC-14 2017 Presenter:Yutaka Ohkoshi, KyoungHou Kim, Ren Tomisawa, Toshifumi Ikaga, Masato Masuda, Kazuyuki Okada, Hiroyasu Masunaga, Toshiji Kanaya
Structural change with the tensile strain of the needle-punched non-woven fabrics analyzed by X-ray micro-computed tomography ATC-14 2017 Presenter:KyoungHou Kim, Kengo Nakasone, Yujiro Isii, Tatsuya Isikawa, Yutaka Ohkoshi
Dimensions and stability of smectic phase formed on the structure development of poly(ethylene terephthalate) fiber ATC-14 2017 Presenter:Yutaka Ohkoshi, KyoungHou Kim, Ren Tomisawa, Shun Oneda, Toshifumi Ikaga, Masato Masuda, Yuhei Maeda, Kazuyuki Okada, Hiroyasu Masunaga, Toshiji Kanaya
Effects of molecular weight distribution and stereoregularity on the properties and structure of Isotactic Polypropylene fiber ATC-14 2017 Presenter:Tatsuma Kunimitsu, Kai Toyoda, Toshifumi Ikaga, KyoungHou Kim, Yutaka Ohkoshi, Katsuhiko Koike
特許等知的財産
登録済特許 Multi-hollow filament and a manufacturing method thereof and product using the same
研究諸活動
海外派遣 2015-2015 , 信州大学教員海外派遣支援事業 , KunKuk University, Korea