Improvement of Mechanical Properties for Poly (L-lactic acid) Film through Drawing Process Optimization

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The enhancement of tensile strength and elongation of poly(L-lactic acid) without using additives has been awaited to open new environmentally friendly markets. To improve the brittle mechanical properties of poly(L-lactic acid), we have investigated the effect of draw ratios and process temperatures on the mechanical properties. The results suggested that tensile strength linearly increased as a function of draw ratio, but elongation at break had a maximum value around draw ratio 2. It was found that the mechanical properties of the films were strongly affected by the draw ratio and not by the process temperature. Δn increased as a function of draw ratio up to 4 (the highest limit of the present test). These results allowed us to interpret that the mechanical properties reflected mainly molecular orientations in the amorphous regions, which were governed by the draw ratio.

収録刊行物

  • 繊維学会誌

    繊維学会誌 60(7), 230-234, 2004-07-10

    社団法人 繊維学会

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各種コード

  • NII論文ID(NAID)
    10013273889
  • NII書誌ID(NCID)
    AN00131651
  • 本文言語コード
    ENG
  • 資料種別
    NOT
  • ISSN
    00379875
  • NDL 記事登録ID
    7023181
  • NDL 雑誌分類
    ZP33(科学技術--繊維工学・工業)
  • NDL 請求記号
    Z17-189
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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