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PHYSICAL PROPERTIES AND DYEABILITY OF NAOH-TREATED SILK FIBERS

机译:NaOH处理的丝纤维的物理性质和可染性

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Domestic (Bonbyx mori) and wild (tussah, Antheraea pernyi) silk fabrics were treated with diluted NaOH solutions by the pad/batch 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 degrees 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. (C) 1995 John Wiley and Sons, Inc. [References: 20]
机译:国产(Bonbyx mori)和野生(tus蚕,An蚕)通过稀NaOH溶液通过填充/分批处理。碱处理使蚕丝纤维的平衡回潮率稳步提高,而桑蚕的平衡回潮率不变。桑蚕的抗张强度和断裂伸长率略有下降。两种丝绸的平均分子取向和结晶度保持不变。差示扫描量热法(DSC)和热力学分析(TMA)表明,桑蚕丝的热行为几乎不受影响,而蚕的热行为在250-300摄氏度的温度范围内表现出轻微变化。通过动态机械测量(DMA)阐明了经过NaOH处理后,桑蚕丝纤维的储能和损耗模量均降低。另一方面,蚕丝表现出主要损失峰的明显上移。用酸性染料染色的经碱处理的acid蚕丝纤维,其染浴耗竭程度较低。 (C)1995 John Wiley and Sons,Inc. [参考:20]

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