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Multiwalled Carbon Nanotube Monoliths prepared by Spark Plasma Sintering (SPS) and their Mechanical Properties

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Title: Multiwalled Carbon Nanotube Monoliths prepared by Spark Plasma Sintering (SPS) and their Mechanical Properties
Authors: Uo, Motohiro Browse this author →KAKEN DB
Hasegawa, Tomoka Browse this author
Akasaka, Tsukasa Browse this author
Tanaka, Isao Browse this author
Munekane, Fuminori Browse this author
Omori, Mamoru Browse this author
Kimura, Hisamichi Browse this author
Nakatomi, Reiko Browse this author
Soga, Kohei Browse this author
Kogo, Yasuo Browse this author
Watari, Fumio Browse this author
Keywords: Carbon nanotube
spark plasma sintering
elastic modulus
hardness
Issue Date: 2009
Publisher: IOS Press
Journal Title: Bio-Medical Materials and Engineering
Volume: 19
Issue: 1
Start Page: 11
End Page: 17
Publisher DOI: 10.3233/BME-2009-0558
PMID: 19458441
Abstract: Three types of multiwalled carbon nanotube (MWCNT) monoliths without any binders were obtained by spark plasma sintering (SPS) treatment at 2000℃ under 80MPa sintering pressure. Three MWCNTs with different diameters: thin (20~30nm∅, CNT Co., Ltd., Korea), thick (100nm∅, Nano Carbon Technologies Co., Ltd., Japan) and spherical thin (20~30nm∅, granulated diameter=1~3μm, Shimizu Corporation, Japan)) were employed for SPS. SEM observation confirmed that these materials maintained the nanosized tube microstructure of raw CNT powder after SPS treatment. The densest monolith was prepared with the spherical MWCNTs. The mechanical properties of this material were estimated by the dynamic hardness test. The elastic modulus of the monolith did not depend on the difference of MWCNTs, but the hardness of spherical MWCNTs was higher than that of thick MWCNTs. The high density and hardness of the spherical MWCNTs were caused by the high packing density during the SPS process because of its spherical granulation. Thus, the spherical MWCNTs were most useful for the MWCNT monolith preparation with the SPS process and its application as a bone substitute material and a bone tissue engineering scaffold material was suggested.
Type: article (author version)
URI: http://hdl.handle.net/2115/38771
Appears in Collections:歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 宇尾 基弘

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