International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Effects of wet treatment conditions on the crystallinity and morphology of outside of silkworm cocoons

  • Kim, Yeon Jin (Department of Biofibers and Biomaterials Science, Kyungpook National University) ;
  • Kweon, HaeYong (Industrial Insect and Sericulture Division, National Institute of Agricultural Sciences, RDA) ;
  • Um, In Chul (Department of Biofibers and Biomaterials Science, Kyungpook National University)
  • Received : 2021.08.18
  • Accepted : 2021.09.06
  • Published : 2021.09.30
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Abstract

Natural nonwoven silk fabric has attracted researchers' attention owing to its unique properties as a biomaterial. It is fabricated by reeling, wetting, and hot pressing natural silk filament from silkworm cocoons. In this study, silkworm cocoons were immersed in water at different temperatures for various durations to examine the effects of wet treatment on their crystallinity and morphology. As the treatment temperature and time increased, the cocoon's silk filament separation became more evident, and fibroin strands were observed in it. The crystallinity indexes of the silkworm cocoons increased until a treatment time of 2 h and remained constant thereafter. The increase in the crystallinity index using wet treatment was enhanced by increasing the treatment temperature. Although the weight loss of the silkworm cocoon was insignificant until 40℃, it was appreciable above this temperature, and the degree of weight loss constantly increased with increases in the treatment temperature and time.

Keywords

Acknowledgement

This study was performed with the support of the Research Program for Agricultural Science & Technology Development (PJ016130), National Academy of Agricultural Science, Rural Development Administration, Republic of Korea.

References

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