博士(工学), 信州大学

Polymer materials

2025
繊維学会, 繊維学会奨励賞
配向結晶化挙動の定量解析から推定したポリエステル繊維の強度発現メカニズムに関する研究
冨澤錬

2024
繊維学会, 繊維学会年次大会優秀口頭発表賞
芯鞘複合溶融紡糸による接着性樹脂ポリビニルブチラールの繊維化および応用
冨澤錬

2024
日本繊維機械学会, 日本繊維機械学会学術研究奨励賞
接着性樹脂ポリビニルブチラールの複合溶融紡糸による繊維および繊維集合体の高強度化
冨澤錬

2023
日本繊維機械学会, 日本繊維機械学会学術奨励賞
Polycarbonate/Polypropylene 複合メルトブロー不織布の作成と熱安定性
冨澤錬

Effects of the nozzle flow on the ultra-SAXS-scale orientation and tensile toughness of melt-spun poly(ethylene terephthalate) fibers
Yuki Tanimoto, Yutaka Ohkoshi, KyoungHou Kim, Ren Tomisawa, Kazuyuki Okada, Toshiji Kanaya, Hiroo Katsuta
Polymer, 350, 129782, Apr. 2026, Refereed

Effect of the Polycarbonate-to-polypropylene Ratio on the Pressure Drop and Filtration Efficiency of a Melt-blown Nonwoven
Yuji Shibata, Ren Tomisawa, KyoungHou Kim, Masashi Sato, Eiko Meguro
Fibers and Polymers, 27, 1679-1687, Jan. 2026, Refereed

Effects of Annealing on the Structure and Properties of a Melt‑Blown Nonwoven Fabricated with Polypropylene and Poly‑(Ethylene Terephthalate) Extruded Simultaneously from Nozzles of Different Diameters
Rina Tomita, Kim Kyoung‑Hou, Ren Tomisawa
Fibers and Polymers, 26, 5371-5378, Sep. 2025, Refereed

In situ analysis of hierarchal structure changes to the tensile breakage of poly(ethylene terephthalate) fiber
Ryohei Fuse, Yuki Tanimoto, Ren Tomisawa, KyoungHou Kim, Yutaka Ohkoshi, Kazuyuki Okada, Hiroo Katsuta, Keiichi Osaka
Polymer, 332, 128558, May 2025, Refereed

Fabrication of a polycarbonate/polypropylene fiber mix air filter using a melt-blowing apparatus with different nozzle diameters
TOMISAWA Ren, SHIBATA Yuji, KIM KyoungHou, SATO Masashi, MEGURO Eiko
Journal of Textile Engineering, 71(1), 1-8, Feb. 2025, Refereed

Effects of drawing stress on the molecular-chain extension in fiber structure formation of poly(ethylene terephthalate)
R. Tomisawa, T. Ikaga, K.H. Kim,Y. Ohkoshi, K. Okada,T. Kanaya, H. Katsuta
Polymer, 312, 127605, Oct. 2024, Refereed

Effects of poly(vinyl butyral)/poly(ethylene terephthalate) sheath-core composite fibers on the structure and tensile strength of a needlepunchednonwoven
R. Tomisawa, T. Yoshida
Journal of Textile Engineering, 70(5), 66-71, Oct. 2024, Refereed

Thickness and Compression Behavior of a Nonwoven Produced by Melt‑Blowing a Polypropylene/Poly(ethylene terephthalate) Fiber Mix
R. Tomisawa, Y. Ohkoshi, K.H. Kim
Fibers and Polymers, 25, 3539-3548, Aug. 2024, Refereed

ポリプロピレンメルトブロー不織布を用いたAg表面増強ラマン散乱基板の開発
田原 祐助,西山 貴史,山本 純也,冨澤 錬,園田 英人,田中 充
電気学会論文誌, 144(11), 350-356, May 2024, Refereed

Development of Surface-enhanced Raman Scattering Substrate Using Melt-blown Nonwoven Fabric Subjected to Electroless Ag Plating: A Basic Study
Y. Tahara, J. Yamamoto, T. Nishiyama, R. Tomisawa, R. Takigawa
Sensors and Materials, 36(4), 1305-1318, Feb. 2024, Refereed

Polycarbonate/Polypropylene-conjugated Melt-blown Nonwovens: Thermal Stability and Performance as Li-ion Battery Separators
R. Tomisawa, A. Makimura, K.H. Kim, Y. Ohkoshi
Journal of Textile Engineering, 69(5), 71-77, Oct. 2023, Refereed

Tensile strength of polyester fiber estimated by molecular-chain extension prior to structure formation
R. Tomisawa, M. Nagata, Y. Otsuka, T. Ikaga, K.H. Kim, Y. Ohkoshi, K. Okada, T. Kanaya, H. Katsuta
SCIENTIFIC REPORTS, 13(1), 11759, Jul. 2023, Refereed

Fiber structure development of poly(ethylene terephthalate-co-isophthalate) copolymer
R. Tomisawa, M. Okazaki, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, T. Kabe, T. Kanaya, H. Katsuta, Y. Funatsu
Polymer, 245, 124708, Mar. 2022, Refereed

Effects of melt-spinning speed on structure development of polypropylene fiber after necking
N. Koike, R. Tomisawa, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, H. Katsuta, Y. Funatsu
JOURNAL OF FIBER SCIENCE AND TECHNOLOGY, 76(5), 161-169, May 2020, Refereed

Effects of dimensions and regularity on the mechanical properties of the smectic phase formed during orientation-induced crystallization of poly(ethylene terephthalate)
R. Tomisawa, S. Oneda, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, H. Katsuta, Y. Funatsu
Polymer, 164, 163-173, Feb. 2019, Refereed

Ultra-SAXS observation of fibril-size structure formation after the necking of poly(ethylene terephthalate) and poly(phenylene sulfide) fiber
R. Tomisawa, T. o, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, H. Katsuta, Y. Funatsu
POLYMER JOURNAL, 51(2), 211-219, Nov. 2018, Refereed

Effect of melt spinning conditions on the fiber structure development of polyethylene terephthalate
R. Tomisawa, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada,H. Masunaga, T. Kanaya, M. Masuda, Y. Maeda
Polymer, 116(s1), 367-377, May 2017, Refereed

Effect of draw ratio on fiber structure development of polyethylene terephthalate
R. Tomisawa, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada,H. Masunaga, T. Kanaya, M. Masuda, Y. Maeda
Polymer, 116(s1), 357-366, May 2017, Refereed

Effect of polycarbonate mixing on thermal shrinkage and thermal bonding of nonwoven polypropylene separator
TOMISAWA Ren, MAKIMURA Akihiro, YOSHIDA Satoshi
Journal of Textile Engineering, Refereed

繊維の強度を決める構造
冨澤錬
繊維学会東海支部講演会, Mar. 2025, Invited

複合メルトブロー法を用いた不織布への機能付与
冨澤錬
日本繊維機械学会 不織布研究会・ ナノファイバー研究会合同研究会, Apr. 2024, Invited

Fiber structure development of poly(ethylene terephthalate-co-isophthalate) copolymer
R. Tomisawa, M. Okazaki, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, T. Kabe, T. Kanaya, H. Katsuta, Y. Funatsu
PPS37, Apr. 2022

Ultra-SAXS observation of fibril-size structure formation after the necking of poly(ethylene terephthalate) and poly(phenylene sulfide) fiber
R. Tomisawa, T. Ando, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, H. Katsuta, Y. Funatsu
IPC2018, Dec. 2018

Dimensions and stability of smectic phase formed on the structure development of poly(ethylene terephthalate) fiber
R. Tomisawa, S. Oneda, T. Ikaga, K. H. Kim, Y. Ohkoshi, K. Okada, H. Masunaga, T. Kanaya, M. Masuda, Y. Maeda
ATC14, Jul. 2017