時分割XAFS法による硫黄架橋配合ゴムの架橋反応解析

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タイトル別名
  • Time-resolved XAFS Study on Crosslinking Reaction of Sulfur-based Rubber Compounds
  • ジブンカツ XAFSホウ ニ ヨル イオウ カケハシ ハイゴウ ゴム ノ カケハシ ハンノウ カイセキ
  • Time-Resolved XAFS Study on Crosslinking Reaction of Sulphur Based Rubber Compounds

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説明

Crosslinking reaction of sulfur-based rubber compounds with sulfur, accelerators and zinc oxide (ZnO) as crosslinking agents was studied by a time-resolved X-ray adsorption fine structure (XAFS) method. The Zn K-edge XANES (X-ray absorption near-edge structure) spectra obtained during the process were properly decomposed into two components, assigned to ZnO and zinc sulfide (ZnS). The [ZnO]/[Zn] ratio was found to decrease with the increased amounts of sulfur and accelerators, or by the addition of surface active-carbon black. It was confirmed that the decreasing behavior of the amount of ZnO gives a good indicator of the crosslinking reaction by changing of ZnO into ZnS through the chemical reactions with sulfur-containing reagents.

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