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2002 Fiscal Year Final Research Report Summary

Physico-chemical studies of liquid materials in the gland just before solidification of spider silks

Research Project

Project/Area Number 13650958
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 高分子構造・物性(含繊維)
Research InstitutionNara Medical University

Principal Investigator

SOSAKI Shigeyoshi  Nara Medical University, Professor, 医学部, 教授 (90273911)

Project Period (FY) 2001 – 2002
Keywordsspider / silks / anatomy / gland / secretedliquid / molecular weight / electrophoresis / degradation
Research Abstract

Recently, many researchers have focused on an application of spider silks to stocking, bullet proof jacket and threads from the viewpoint of genetic technology. However, many interesting properties on spider silks have been not made clear even though the genetic technology was developed. Especially, it is necessary to make clear the physico-chemical properties of spider silks in the liquid state. The author tried to dissect spider's bodies and to examine the liquid materials contained in the silk glands. The molecular weight of liquid materials was determined to be about 270,000 even though it was very difficult to determine the molecular weight because of degradation.
The elastic modulus was determined for spider silks prepared at different stages of spider's growth. The effects of ultraviolet rays upon silks were also studied. And the mechanical properties of bagworm silks were also studied.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Shigeyoshi Osaki: "Determination of Elastic Modulus of Spider's Silks"Polymer Journal. 34. 25-29 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大崎茂芳: "動物から学ぶ天然繊維のサイエンス-クモの糸・ミノムシの糸・コラーゲン線維-"繊維学会誌. 58. 8-12 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shigeyoshi Osaki: "Safety Coefficient of the Mechanical Lifeline of Spider Silks"Polymer Journal. 35. 261-265 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shigeyoshi Osaki: "Nanostructure of Spider Silks"by A.Harada and N.Ueyama, Springer-Verlag(in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より

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Published: 2004-04-14  

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