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Shinji Ochi – One of the best experts on this subject based on the ideXlab platform.
Tensile Properties of Bamboo Fiber Reinforced Biodegradable PlasticsInternational Journal of Composite Materials, 2012Co-Authors: Shinji OchiAbstract:
This paper describes tensile properties of Bamboo Fiber reinforced biodegradable plastics. The unidirectional biodegradable composites were made from Bamboo Fiber bundles and a starch-based biodegradable resin. The tensile strengths of the composites increased with increasing Fiber content up to 70%. The composites possessed extremely high tensile strengths of 265 MPa. The fabrication with emulsion-type biodegradable resin contributed to reduction in voids and Fiber contacts in the composites. Moreover, heat resistance of Bamboo Fibers and Bamboo Fiber reinforced plastics was in- vestigated. As results, tensile strength of both Bamboo Fiber and Bamboo Fiber reinforced plastics decreased at 160℃.
Hitoshi Takagi – One of the best experts on this subject based on the ideXlab platform.
strength evaluation of cross ply green composite laminates reinforced by Bamboo FiberComposites Part B-engineering, 2016Co-Authors: Romi Sukmawan, Hitoshi Takagi, Antonio Norio NakagaitoAbstract:
Abstract Steam exploded Bamboo (SEB) Fibers were treated with alkali solution to remove lignin and hemicelluloses and also to increase the compatibility with biodegradable matrix resin. The Fibers were processed by simple hand-lay-up method and hot pressed using dispersion-type biodegradable poly lactic acid (PLA) resin to produce a PLA/Bamboo Fiber cross-ply (0/90) s laminate composites, whose Fiber content varied from 17 up to 68 wt.%. The intermolecular interaction among Bamboo Fiber and PLA matrix was discussed based on Fourier transform infrared (FTIR) analysis. The results showed that the tensile strength of alkali treated Bamboo Fiber was comparable with those of common strong natural Fibers such as hemp and flax Fibers. The composites’ strength was similar to that of ordinary glass Fiber-reinforced plastics laminate and the specific strength was three times higher than that of mild steel. It was also found that the cross-ply (0/90) s SEB/PLA laminate has the same cracking character as the common cross-ply laminates based on carbon or glass Fibers.
Bamboo Fiber polypropylene composites: Effect of Fiber treatment and nano clay on mechanical and thermal propertiesJournal of Vinyl & Additive Technology, 2014Co-Authors: Rezaur Rahman, Sinin Hamdan, Dayang Maryani Awang Hashim, Saiful Islam, Hitoshi TakagiAbstract:
In the current study, Bamboo Fibers were modified with sodium meta-periodate in order to improve the mechanical and thermal properties of the Bamboo-clay-polypropylene (PP) composites. Both raw and treated Bamboo Fibers were used in the manufacturing of the composites. The mechanical and thermal properties of the composites from modified Bamboo Fibers were found to increase considerably compared with those of untreated Fibers. Tensile strengths of (raw Bamboo Fiber)/PP, (raw Bamboo Fiber-clay)/PP, and (treated Bamboo Fiber-clay)/PP composites showed a decreasing trend with increasing Fiber loadings. However, the values for the chemically modified (Bamboo Fiber)-clay-PP composite at all mixing ratios were found to be higher than that of the original PP. The scanning electron micrographs showed that interfacial bonding between the treated Fiber-clay and matrix has significantly improved. It was determined that better dispersion of the filler into matrix occurred on 5% clay addition and Fiber treatment
Mechanical Characterization of Bamboo Fiber-Reinforced Green CompositesKey Engineering Materials, 2013Co-Authors: Hitoshi Takagi, Toshihiro FujiiAbstract:
This paper deals with the mechanical behavior of Bamboo Fiber-reinforced biodegradable composites (green composites). A starch-based, dispersion type biodegradable resin was used as matrix polymer, and this matrix was reinforced by long Bamboo Fibers which were extracted by a steam-explosion method. The experimental results showed that the developed green composites possessed the flexural and tensile strength of 263 MPa and 270 MPa, respectively. The mechanical properties of the green composites were evaluated as a function of Fiber content. It is found that the observed tensile strength was slightly lower than that of estimated values from the rule of the mixture. This discrepancy might be related to the misorientation of the Bamboo Fiber in the composites and to that the final fracture of composites is also governed by the presence of weak Bamboo Fiber.
Hiroyuki Hamada – One of the best experts on this subject based on the ideXlab platform.
Effects of Compatibilizers on Properties of Polypropylene/Bamboo Fiber CompositesKey Engineering Materials, 2017Co-Authors: Jitlada Boonlertsamut, Rutchaneekorn Wongpajan, Supaphorn Thumsorn, Hiroyuki HamadaAbstract:
Bamboo Fiber (BF) reinforced thermoplastic material composites were prepared in this study. polypropylene (PP) was compounded with Bamboo Fiber in a twin screw extruder at Bamboo Fiber contents of 0-30 wt% with polyethylene grafted maleic anhydride (PE-g-MA) as modifying agent. PP/Bamboo Fiber composites were to dumbbell specimens by injection molding process. The effect of Bamboo Fiber contents on properties of the composites was investigated. Tensile and storage modulus of the composites increased when increasing Bamboo Fiber contents. It can be noted that Bamboo Fiber promoted crystallization and enhanced crystallinity of PP in the composites, which improved the composites mechanical performance. On the contrary, tensile strength of the PP/BF composites was almost unchanged. Nevertheless, it was considering that the level of interaction between Bamboo Fiber and PP could be enhanced at higher contents of PE-g-MA. It can be noted that fracture toughness of the PP/BF composites was maintained at the BF contents of 10 wt%, which was attributed to the good interaction between Bamboo Fiber and PP matrix with the addition of PE-g-MA.
Crystallization kinetics and thermal resistance of Bamboo Fiber reinforced biodegradable polymer composites, 2014Co-Authors: Supaphorn Thumsorn, Natee Srisawat, Sommai Pivsa-art, Hiroyuki HamadaAbstract:
Bamboo Fiber reinforced biodegradable polymer composites were prepared in this study. Biodegradable poly(butylene succinate) (PBS) was blended with Bamboo Fiber in a twin screw extruder with varied Bamboo content from 20-0wt%. PBS/Bamboo Fiber composites were fabricated by compression molding process. The effect of Bamboo Fiber contents on properties of the composites was investigated. Non-isothermal crystallization kinetic study of the composites was investigated based on Avrami equation. The kinetic parameters indicated that Bamboo Fiber acted as heterogeneous nucleation and enhanced crystallinity of the composites. Bamboo Fiber was well dispersed on PBS matrix and good adhered with the matrix. Tensile strength of the composites slightly deceased with adding Bamboo Fiber. However, tensile modulus and impact strength of the composites increased when increasing Bamboo Fiber contents. It can be noted that Bamboo Fiber promoted crystallization and crystallinity of PBS in the composites. Therefore, the compo…
Mechanical properties of carbonized Bamboo Fiber reinforced biodegradable polymer composite., 2004Co-Authors: H. Matsui, Kazuo Kitagawa, Takeshi Semba, H. Okumura, Umaru Semo Ishiaku, Hiroyuki HamadaAbstract:
The mechanical properties of biodegradable polymer composite with carbonized Bamboo Fibers were evaluated. Poly (butylene succinate) (PBS) was used as the biodegradable plastic matrix while the condition of carbonization was varied. By increasing Fiber content, tensile modulus was confirmed to increase. In particular, the tensile modulus of composite filled with semi-carbonized Bamboo displayed higher values than the uncarbonized Bamboo Fibers composite. The values of tensile strength decreased according to the increase of Fiber content; however, the carbonized Bamboo Fiber composites experienced less decrease than the uncarbonized ones. The surface resistivity of carbonized Bamboo Fiber composites was lower than that of Bamboo Fibers and also decreased with the increase in Fiber content in each case.