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Dive into the research topics where Shizuo Kubota is active.

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Featured researches published by Shizuo Kubota.


Journal of Polymer Science Part A | 2000

Synthesis and characterization of novel biodegradable copolyesters by transreaction of poly(ethylene terephthalate) with copoly(succinic anhydride/ethylene oxide)

Yasukatsu Maeda; Takuya Maeda; Kazumi Yamaguchi; Shizuo Kubota; Atsuyoshi Nakayama; Norioki Kawasaki; Noboru Yamamoto; Sei-ichi Aiba

Poly(ethylene terephthalate)/copoly(succinic anhydride/ethylene oxide) copolymers, (PET/PES copolymers) were synthesized by the transreaction between PET and PES and characterized with GPC, 1 H NMR, and DSC. Most of the copolymers obtained were random copolymers. The films cast of these copolymers were transparent. The thermal, mechanical properties, and biodegradability of the copolymers obtained were studied with respect to the composition and lengths of aliphatic and aromatic units in the copolymers. In the copolymers having high PET content, the melting points, due to the PET segment, were observed by DSC measurement, although the fusion heats of the copolymers were small. The enzymatic hydrolyzability by a lipase from Rhizopus arrhizus and biodegradability by activated sludge of the copolymers decreased with an increase in PET content. When the length of succinic acid unit in the copolymer was below 2, the hydrolyzability of the copolymers decreased considerably. The tensile strengths of the cast films prepared from the copolymers synthesized by the transreaction increased with an increase in PET content, whereas, the elongations at break decreased. Their tensile strengths were half, and the elongations were double compared to those of PET homopolymer film.


Macromolecular Chemistry and Physics | 2007

Organic light-emitting diode application of fluorescent cellulose as a natural polymer

Makoto Karakawa; Masayuki Chikamatsu; Chikanobu Nakamoto; Yasukatsu Maeda; Shizuo Kubota; Kiyoshi Yase


Archive | 1996

Method of recycling cured unsaturated polyester resin waste

Shizuo Kubota; Osamu Ito; Hiroyuki Miyamoto


Polymer Journal | 2002

Organosoluble Oligomer Obtained by Glycolysis of Poly(ethylene terephthalate) and Its Detailed Structural Characterization by MALDI-TOF Mass Spectrometry

Hajime Mori; Yasukatsu Maeda; Shizuo Kubota; Kazumi Yamaguchi; Osamu Ito; Takuya Maeda


Archive | 1995

Method of recycling unsaturated polyester resin waste

Shizuo Kubota; Osamu Ito; Hiroyuki Miyamoto


Archive | 2000

Method for producing ester oligomer, ester oligomer, method for producing polyester and method for producing polyurethane

Shizuo Kubota; Ikukatsu Maeda; Takuya Maeda; Hiroyuki Miyamoto; Toshio Sakamoto; Kazumi Yamaguchi; 静男 久保田; 拓也 前田; 育克 前田; 登志生 坂本; 博行 宮本; 和三 山口


Journal of Applied Polymer Science | 2002

Characterization of novel biodegradable copolyesters prepared from glycolyzed products of poly(ethylene terephthalate)

Yasukatsu Maeda; Hajime Mori; Takuya Maeda; Osamu Itoh; Kazumi Yamaguchi; Shizuo Kubota; Atsuyoshi Nakayama; Norioki Kawasaki; Noboru Yamamoto; Seiich Aiba


Archive | 1998

Synthesis of unsaturated polyester resin and apparatus therefor

Shizuo Kubota; Hiroyuki Miyamoto; 静男 久保田; 博行 宮本


Archive | 1998

Unsaturated polyester resin composition and its molding

Hiroyuki Kanzaki; Shizuo Kubota; Ikukatsu Maeda; Takuya Maeda; 静男 久保田; 拓也 前田; 育克 前田; ▼裕▲行 神前


Journal of Polymer Science Part A | 1969

Further remarks on butadiene polymerization with nickel–organic halide systems

Shuzo Aoki; Shizuo Kubota; Takayuki Otsu

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Yasukatsu Maeda

National Institute of Advanced Industrial Science and Technology

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Atsuyoshi Nakayama

National Institute of Advanced Industrial Science and Technology

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Noboru Yamamoto

National Institute of Advanced Industrial Science and Technology

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Norioki Kawasaki

National Institute of Advanced Industrial Science and Technology

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Kiyoshi Yase

National Institute of Advanced Industrial Science and Technology

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Masayuki Chikamatsu

National Institute of Advanced Industrial Science and Technology

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Sei-ichi Aiba

National Institute of Advanced Industrial Science and Technology

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Seiich Aiba

National Institute of Advanced Industrial Science and Technology

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