中文摘要：

采用湿法纺丝方法制备了断裂强度达3．25cN／dtex的海藻酸盐纤维。并通过正交实验研究海藻酸钠浓度、凝固浴浓度、凝固浴温度等工艺条件对纤维断裂强度的影响．得到了制备高强度海藻酸盐纤维的最佳工艺条件：纺丝液质量分数为5％，凝固浴质量分数为4％，凝固浴温度为40℃．然后采用扫描电子显微镜、红外光谱仪、X射线衍射仪、热重分析仪、锥形量热计等手段研究了该纤维的结构与性能．

英文摘要：

The alginate fiber with the strength up to 3.25 cN/dtex is prepared by wet spinning method. The effects of sodium alginate concentration, coagulation concentration, coagulation temperature are studied on the breaking strength. The optimal experimental conditions are found： Spinning solution concentration of 5%, coagulation concentration of 4%, and coagulation temperature of 40 ℃. At last, the structure and properties of this fiber are analyzed by scanning electron microscope, infrared spectrometer, X-ray diffraction, thermal gravimetrie analyzer, and cone calorimeter.