| Titre : |
A comparative study of ultrasonic degumming of silk sericin using citric acid, sodium carbonate and papain |
| Type de document : |
texte imprimé |
| Auteurs : |
Wuchao Wang, Auteur ; Yi Pan, Auteur ; Kang Gong, Auteur ; Qi Zhou, Auteur ; Tonghua Zhang, Auteur ; Qing Li, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 195-201 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Dégommage
Essais dynamiques
Fibres textiles -- Analyse
Fibres textiles -- Propriétés mécaniques
Morphologie (matériaux)
Nettoyage par ultrasons
Résistance à la traction
Séricine
Soie et constituants
Surfaces -- Analyse
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
The utilisation of ultrasonics has been shown to enable efficient and environmentally friendly textile wet processing. This study conducted a comparative investigation of silk degumming by using a conventional heating bath and ultrasonic irradiation at a range of ultrasonic frequencies. Citric acid, sodium carbonate and papain were used as degumming agents. Sericin degumming rate, fibre whiteness, fibre surface morphology, fibre structure characteristics and fibre tensile properties were measured and analysed. Results showed that ultrasonics at a lower frequency produced a greater degumming rate than at a higher frequency. Ultrasonics is a more effective way than the conventional heating bath of improving degumming efficiency, especially at a lowered temperature of 60 °C. When sodium carbonate was applied at 90 °C, a conventional heating bath was found to be more effective than ultrasonics. Papain was found to be more effective in sericin removal than citric acid and sodium carbonate, with a degumming rate of 22% achieved at 60 °C under ultrasonic irradiation at 40 kHz. The use of papain can, however, cause a possible overreaction to silk under certain severe conditions, resulting in a loss of fibre whiteness. Negligible changes in fibre structure characteristics were measured by Fourier Transform–infrared spectroscopy and X‐ray diffraction after ultrasonic degumming with papain. Slightly reduced fibre strength and increased fibre extensibility were observed in ultrasonically degummed silk samples compared with un‐degummed and conventionally degummed silk samples. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Equipment - Sample preparation - Degumming - Determination of fibre weight loss - Determination of fibre whiteness - Fibre surface analysis - Infrared spectra - X-ray diffraction - Tensil testing
- RESULTS AND DISCUSSION : Degumming rate - Fibre whiteness - Fibre surface morphology - Fibre structure characteristics and tensile strength |
| DOI : |
10.1111/cote.12392 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12392 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32617 |
in COLORATION TECHNOLOGY > Vol. 135, N° 3 (06/2019) . - p. 195-201
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