メカニカルミリングによるPVA粉末の非晶質化 Amorphization of PVA Powder Subjected to Mechanical Milling

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抄録

The mechanical milling of PVA(polyviny l alcohol) under an Ar atmosphere was carried out at room temperature. So far, no complete amorphous PVA has been reported to be synthesized by any other methods. Bragg peaks of the crystal phase in the PVA, however, became broadened with increasing milling time. After 200 hours of milling a halo pattern dominated. The result, therefore, led us to conclude that the amorphization of the PVA was caused by the mechanical destruction of the crystal structure. The amorphization of the PVA was also confirmed through the observation of low energy excitation by inelastic neutron scattering. A drastic change within 5Å in the radial distribution function RDF(r)was not observed. On the contrary, the correlation distance of the atomic distribution became shorter with increasing milling time. The results suggest that the milling transforms straight long chain molecules into tangled ones in PVA.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 43(6), 726-730, 1996-06-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002012373
  • 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
    3976290
  • 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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