特異な試料分解を利用する架橋高分子の架橋構造の解析 Characterization of Cross-linking Structure in Cross-linking Polymers using Specific Decomposition of Samples

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著者

    • 大谷 肇 OHTANI Hajime
    • 名古屋工業大学物質工学専攻 Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology

抄録

Cross-linking structure of cross-linking polymers, especially for acrylate-type ultraviolet (UV)-cured resin, was characterized using specific decomposition methods. At first the cured resin sample was analyzed by pyrolysis-gas chromatography (Py-GC) in the presence of organic alkali, tetramethylammonium hydroxide (TMAH). A series of methyl acrylate (MA) oligomers (up to hexamers) were observed in the pyrograms, which were formed through thermally assisted hydrolysis and methylation selectively occurred at ester linkages in the UV-cured resin.<br>Moreover, acrylate-type UV cured resins were also characterized by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) combined with supercritical methanolysis of the samples. The MALDI mass spectrum of the methanolysis products contained a series of peaks related to MA oligomers up to around 50-mers, which cannot be observed by Py-GC in the presence of TMAH. Furthermore, the methanolysis products were fractionated by size exclusion chromatography followed by the MALDI-MS measurements of the individual fractions. The MALDI mass spectrum of the highest molar mass fraction showed a broad peak up to <i>m</i>/<i>z</i> ca. 180, 000. The observed distributions of the decomposition products suggested that the network junctions in the UV-cured resin were composed of up to around 2, 000 acrylate units.

収録刊行物

  • 日本ゴム協會誌  

    日本ゴム協會誌 80(7), 254-259, 2007-07-15 

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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各種コード

  • NII論文ID(NAID)
    10018921590
  • NII書誌ID(NCID)
    AN00189720
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    0029022X
  • NDL 記事登録ID
    8889254
  • NDL 雑誌分類
    ZP17(科学技術--化学・化学工業--高分子化学・高分子化学工業--ゴム・プラスチックス)
  • NDL 請求記号
    Z17-125
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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