天然ゴムの結晶化挙動の解析　３　　ＩＲの結晶化への飽和脂肪酸濃度の効果

DOI Web Site 参考文献16件
  • 河原 成元
    Department of Chemistry, Nagaoka University of Technology
  • 松浦 亜衣
    Division of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology
  • 鹿久保 隆志
    Division of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology
  • 西山 直幸
    Division of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology
  • 田中 康之
    Division of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology

書誌事項

タイトル別名
  • Crystallization Behavior of Natural Rubber, Part 3. Effect of Saturated Fatty Acid on Crystallization of cis-1,4-Polyisoprene.
  • テンネン ゴム ノ ケッショウカ キョドウ ノ カイセキ ダイ3ポウ IR ノ ケッショウカ エ ノ ホウワ シボウサン ノウド ノ コウカ

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抄録

Crystallization behavior of synthetic cis-1, 4 polyisoprene (IR), mixed with 0.4×10-2mol/kg_??_4.8×10-2mol/kg saturated fatty acid, was investigated by dilatometry at -25 and -15°C. The crystallization of IR was abruptly promoted by the addition of saturated fatty acids higher than 1.0×10-2mol/kg, such as stearic acid, palmitic acid and myristic acid, respectively, because of the formation of crystalline domain of the fatty acids. But, capric acid did not stimulate the crystallization of IR due to melting at above -25°C and soluble into IR. These demonstarate that the lowest concentration of fatty acids necessary for the acceleration of the crystallization rate of IR was 1.0×10-2mol/kg, when fatty acid formed crystalline domain dispersed in IR matrix. The crystallization of IR was influenced by not only equilibrium crystal structure, but also dynamic deposition of stearic acid from melt, which was confirmed by precooling of the rubber at 0, 10 and 30°C before crystallization at -25°C.

収録刊行物

  • 日本ゴム協会誌

    日本ゴム協会誌 72 (7), 413-417, 1999

    一般社団法人 日本ゴム協会

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