Journal of Sericultural and Entomological Science (한국잠사곤충학회지)

Korean Society of Sericultural Science (한국잠사학회)
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Structural Characteristics of Regenerated Antheraea pernyi Silk Fibroin Film treated with ethanol

에탄올처리 재생 작잠 견피브로인 필름의 구조 특성

  • 우순옥 (농업과학기술원 잠사곤충부) ;
  • 권해용 (서울대학교 농업생명과학대학) ;
  • 엄인철 (서울대학교 농업생명과학대학) ;
  • 박영환 (서울대학교 농업생명과학대학)
  • Published : 2000.12.01
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Abstract

Effects of ethanlo treatment on the structural and thermal characteristics of regenerated Antheraea pernyi silk fibroin (RSF) were investigated. Infrared spectroscopy and X-ray diffractometry showed that the conformational transition of RSF might be affected by concentration of ethanol and its treatment time. The structure of RSF was rapidly changed from random coil to $\beta$-sheet conformation when RSF was treated with les than 75% ethanol concentration. However, RSF treated with ethanol(100%) did not show conformational change. Differential scanning calorimetry showed that exotherm at 232$\^{C}$ disappeared and the intensity of endotherm at 228$\^{C}$ decreased with treatment of 75% ethanol. Dynamic thermal analysis showed that loss modulus (E") and tan $\delta$$\_$E/ of RSF treated with aqueous ethanol was broaden and shifted to higher temperature in comparison with those of untreated RSF.

Keywords

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