Effects of wet treatment conditions on the crystallinity and morphology of outside of silkworm cocoons
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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°C, it was appreciable above this temperature, and the degree of weight loss constantly increased with increases in the treatment temperature and time.
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°C, it was appreciable above this temperature, and the degree of weight loss constantly increased with increases in the treatment temperature and time.
참고문헌 (11)
- Yu Jeong Bae, "Crystallinity change of silkworm variety cocoons by heat treatment", International Journal of Industrial Entomology, 42(1), pp.7~13 (2021), 한국잠사학회
- 배연수, "습윤처리 및 열압착처리가 기계적으로 제작된 천연 실크 부직포의 구조 및 성질에 주는 영향", 한국섬유공학회지, 55(6), pp.381~389 (2018), 한국섬유공학회
- 배연수, "Preparation, Structural Characteristics, and Properties of Airlaid Nonwoven Silk Fabric", 폴리머, 44(6), pp.809~816 (2020), 한국고분자학회[DOI]
- Bae YS, "Effects of fabrication conditions on structure and properties of mechanically prepared natural silk web and non-woven fabrics", Polymers, 13, pp.1578~ (2021)
- Hui Ju Choi, "Morphology, molecular conformation and moisture regain of cocoons of different silkworm varieties", International Journal of Industrial Entomology, 40(1), pp.1~15 (2020), 한국잠사학회
- Jang MJ, "Effect of sericin concentration and ethanol content on gelation behavior, rheological properties, and sponge characteristics of silk sericin", Eur Polym J, 93, pp.761~774 (2017)
- Lee JH, "Preparation of new natural silk non-woven fabrics by using adhesion characteristics of sericin and their characterization", Int J Biol Macromol, 106, pp.39~47 (2018)
- Lee KH, "Preparation of silk nonwoven fabrics by needle punching thermal bonding and its properties", Korean J Seric Sci, 41, pp.205~210 (1999)
- Bo Kyung Park, "Molecular conformation and crystallinity of white colored silkworm cocoons with different silkworm varieties", International Journal of Industrial Entomology, 38(1), pp.18~23 (2019), 한국잠사학회
- 박보경, "Crystallinity of yellow colored silkworm variety cocoons", International Journal of Industrial Entomology, 38(2), pp.51~55 (2019), 한국잠사학회
- 유영진, "Effect of Extraction Time on the Rheological Properties of Sericin Solutions and Gels", International Journal of Industrial Entomology, 27(1), pp.180~184 (2013), 한국잠사학회