超亲水性韧性聚乳酸纤维毡的制备

Preparation of Superhydrophilic Tough Polylactide Fiber Mats

通过高压静电纺丝制备了具有不同三醋酸甘油酯(GTA)含量的聚乳酸超细纤维毡,场发射扫描电子显微镜、示差扫描量热仪、水接触角和力学性能测试结果表明,随着GTA含量的增加,纤维之间趋于粘连,形成立体网状结构,纤维毡的断裂伸长率、回弹率、拉伸强度可分别达到200%、85%、4.24 MPa。当GTA质量分数高于50%时,水能迅速浸润纤维毡。

Polylactide fibers containing different amounts of glycerol triacetate（GTA） were prepared by electrospinning. The fibers were characterized by environmental scanning electron microscopy, differential scanning calorimetry, water contact angle and mechanical properties. With increasing GTA content, the fibers became to adhere to each other and a network was formed, and as a result, the elongation at break, recovery ratio and tensile strength of the fibers could reach 200% , 85% and 4.24 MPa, respectively. At a GTA content of over 50%, the fiber mats were capable of sucking water quickly.