【摘要】 利用扫描电镜,分析了拉伸细化后牦牛毛纤维的表面鳞片及其纤维皮质细胞形态和结构的变化情况,发现拉伸细化后牦牛毛纤维的表面鳞片波幅明显增大且出现尖端翘起,而且皮质细胞外观伸长且宽度变细,纤维皮质细胞平均长径比由18提高到40左右。与此同时,借助超声波分离技术研究了拉伸细化过程对牦牛毛纤维皮质细胞的堆砌作用的影响,实验证明:拉伸细化过程对于牦牛毛纤维皮质层的构成组合是一个优化的过程,这一过程使皮质细胞沿纤维长度方向上堆砌紧密程度增加。更多还原

【Abstract】 The changes on morphological structure of cutical and cortical cell of yak hair fiber have been analyzed after the stretching slenderization.It was found that the amplitude of yak hair scale has been enlarged and ends of cutical cell were turned up.The cortical cell has been elongated and became thinner,which average length-diameter ratio could be raised from 18 to about 40.By means of ultrasonic separation technology,the effect of stretching on packing action of fiber cortical cells has been investigated.It was proved that the stretching slenderization would improve the structure of yak hair cortex,and cortical cells were packed tighter along the fiber.更多还原