超声波处理对棉纤维结构与性能的影响

 用XRD、TGA、SEM等方法测定并分析了超声波处理对棉纤维的形态结构、结晶形态、热性能和力学性能的影响,力求为超声波在棉织物染整加工中的应用奠定理论基础。实验结果表明:超声波处理改变了棉纤维的形态结构,使棉纤维的天然扭曲消失,纤维表面变得粗糙;使棉纤维的结晶度降低,结晶尺寸减小;棉纤维的热裂解温度降低,热稳定性变差;棉织物的断裂强度降低,断裂延伸度提高。

Effect of ultrasonic treatment on the structure and properties of cotton fibers

The effects of ultrasonic treatment on the morphology,crystalline morphology,thermal performance and mechanical properties of cotton fibers were tested and investigated through X-ray diffraction(XRD),thermal gravimetric analysis(TGA),scanning electron microscope(SEM) and etc.with an attempt to set a theoretical basis for the application of ultrasonic treatment to dyeing and finishing of cotton fabrics.The experimental results indicated that ultrasonic treatment alters the morphology of cotton fiber,makes the natural curvature inherent to the fiber disappeared and the fiber surface rougher.The crystallinity and crystal size decrease and the thermal stability falls due to its reduced thermal pyrolysis temperature.Moreover,its breaking strength is reduced but the breaking extension improved.