伸長による天然ゴムの不均質構造の変化

• 岩蕗 仁

  岡山県工業技術センター材料技術部

• 永田 員也

  岡山県工業技術センター材料技術部

• 野口 徹

  日信工業 (株) 開発センター

• 山田 英介

  愛知工業大学工学部応用化学科

書誌事項

タイトル別名

• Inhomogeneous Structure in Natural Rubber Vulcanizate under Deformation
• シンチョウ ニ ヨル テンネン ゴム ノ フキンシツ コウゾウ ノ ヘンカ

抄録

Inhomogeneous structure in natural rubber (NR) vulcanizate was examined by ¹H pulsed NMR. The spin-spin relaxation times (T₂) under various extension ratios (α) were measured by the Hahn echo method and the solid echo method. The decay curves of NRs were resolved into three T₂ components, T_2SS, T_2HS, and T_2HL, which were respectively arising from the strain-induced crystalline chains, the network chains, and the more mobile chains that were less affected by crosslinks or entanglements. T_2HS and T_2HL decreased with increasing α. However, T_2HL leveled off at α beyond 4 while T_2HS kept decrease. The decrease in T_2HL with α was more rapid than that of T_2HS until T_2HL became constant. This indicates that the deformation of the more mobile chains was larger than that of the network chains. The increase in the fraction of T_2SS component with increasing α was observed in the region of α that T_2HL were almost unchanged. It was suggested that the strain-induced crystallization is closely related with the more mobile chains.

収録刊行物

• 日本ゴム協会誌

  日本ゴム協会誌 80 (3), 83-85, 2007

  一般社団法人 日本ゴム協会

キーワード

• Natural Rubber
• Inhomogeneous Structure
• Network Component
• Non-network Component
• Straininduced Crystallization
• Pulsed NMR
• Hahn Echo Method
• Solid Echo Method

詳細情報

• CRID: 1390001206563303680
• NII論文ID: 10018295375
• NII書誌ID: AN00269207
• DOI: 10.2324/gomu.80.83
• COI: 1:CAS:528:DC%2BD2sXlsFGjsbg%3D
• ISSN: 18840442
• ISSN: 0029022X
• NDL書誌ID: 8742941
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8742941
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
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