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采用静电纺丝法成功制备了普鲁兰多糖纳米纤维膜。为了提高普鲁兰多糖纳米纤维膜在水中的稳定性,利用戊二醛对纤维膜进行浸泡交联,制得了具有交联结构的普鲁兰多糖纳米纤维膜。使用扫描电子显微镜考察了纤维微观形貌及直径分布,研究了浸泡比例与交联时间对吸水率的影响。结果表明:交联后的纤维直径变大,在水中稳定性显著提升;最佳的浸泡比例为1∶70,交联时间24 h。
Pullulan polysaccharide nanofiber membranes were successfully prepared by electrospinning. In order to improve the stability of pullulan nanofibrous membrane in water, the pullulan nanofibrous membrane with cross-linked structure was prepared by immersing the fiber membrane with glutaraldehyde. Scanning electron microscopy (SEM) was used to investigate the morphology and diameter distribution of the fibers. The effects of the soaking ratio and crosslinking time on water absorption were investigated. The results showed that the diameter of the crosslinked fibers became larger and the stability in water increased significantly. The optimal ratio of soaking was 1:70 and the crosslinking time was 24 h.