ハイドロキシアパタイト微粒子分散ポリL乳酸の構造制御による破壊特性の向上 Improvement of the Fracture Properties of Hydroxiapatite Micro-particles Filled Poly(L-lactide) by Structural Modification

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The effect of press process on the mechanical properties of PLLA and HA/PLLA was investigated. Bending modulus and bending strength were effectively improved by press process. The improvement was more effective in the uniaxial press than in the biaxial press due to higher level of molecular orientation. Mode I fracture energy was evaluated for the materials. FE-SEM observation of the fracture surfaces was also performed to characterize the effects of press process on microscopic deformation and failure behavior. Mode I fracture energy was dramatically improved due to the press process. The primary mechanisms of the improvement are thought to be crevasse-like failure at the interlayers of the layered structure created by press process and improved adhesion between HA particles and PLLA matrix.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 55(5), 341-346, 2008-05-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10021173206
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    9531596
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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