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Physical properties and dyeability of NaOH-treated silk fibers by Giuliano Freddi; Hiroshi Kato; Masuhiro Tsukada; Giulia Allara; Hideki Shiozaki is a Materials Science article available to read on EtoBox.

What is Physical properties and dyeability of NaOH-treated silk fibers about?

Domestic (Bombyx mori) and wild (tussah, Antherueapernyi) silk fabrics were treated with diluted NaOH solutions by the padbatch method. The equilibrium moisture regain of tussah silk fibers increased steadily with alkaline treatment, while that of B. mori did not change. B. mori tensile strength and elongation at break were slightly impaired. The average molecular orientation and crystallinity of both kinds of silk remained unchanged. Differential scanning calorimetry (DSC) and thermomechanical analysis (TMA) showed that the thermal behavior of B. mori silk was almost unaffected, while that of tussah exhibited slight changes in the temperature range 250-300°C. By dynamic mechanical measurements (DMA) it was elucidated that both storage and loss moduli of B. mori silk fibers decreased following NaOH treatment. On the other hand, tussah silk exhibited a noticeable upward shift of the major loss peak. Alkali-treated tussah silk fibers, dyed with an acid dyestuff, attained a lower degree of dye-bath exhaustion.

Who reads Physical properties and dyeability of NaOH-treated silk fibers?

Author

Giuliano Freddi; Hiroshi Kato; Masuhiro Tsukada; Giulia Allara; Hideki Shiozaki

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0021-8995)

Published

1995

Language

EN

Field

Materials Science (Physical Sciences)