Development of multi-functional green composites with unique internal microstructure

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289243
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Composite materials/Surface and interface engineering
• Research Institution: The University of Tokushima
• Principal Investigator: Takagi Hitoshi 徳島大学, ソシオテクノサイエンス研究部, 教授 (20171423)
• Co-Investigator(Kenkyū-buntansha): Nakagaito Antonio Norio 徳島大学, 大学院ソシオテクノサイエンス研究部, 准教授 (50523156)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 天然繊維 / 複合材料 / ルーメン

Outline of Final Research Achievements

We examined changes in microstructure and tensile properties of abaca fibers. The lumen size became smaller after 10 and 15wt% NaOH treatment. Nonlinear stress-strain behavior was observed in the alkali-treated abaca fibers. Young’s modulus was found to decrease after alkali treatment with 10-15wt%NaOH.
We also made polylactic acid-base green composites reinforced with short abaca fiber, and evaluated their thermal property. It was found that the thermal conductivity of randomly-oriented short fiber composites also showed a similar dependence on the lumen size in the fiber as that of unidirectional composites.

Free Research Field

複合材料工学