Cui Yuming, Zhu Yunyan, Chen Sheng, Liu Wentao, Chen Hui
College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China.
The Key Laboratory of Leather Chemistry and Engineering (Sichuan University), Ministry of Education, Chengdu, 610065, China.
Soft Matter. 2023 Dec 6;19(47):9315-9324. doi: 10.1039/d3sm01187a.
In this work, gelatin was dissolved in sodium acetate trihydrate/urea deep eutectic solvent (DES) and then mixed with polyacrylonitrile (PAN) spinning solution to prepare composite nanofiber membranes electrospinning. The rheological properties of gelatin/DES (Gel/DES) solution and gelatin/DES/PAN (GDES/PAN) spinning solution were investigated. Besides, the water vapor transmittance rate, water contact angle, and antistatic and mechanical properties of GDES/PAN nanofiber membranes had also been evaluated and the composition and structure of GDES/PAN nanofiber membranes had also been characterized by SEM, EDS and FTIR further. Due to the introduction of DES components and gelatin, the composite nanofibers presented a smooth surface, small diameter, uniform distribution and good continuity. GDES/PAN nanofiber membranes also exhibited desirable breathable properties, hydrophilicity, antistatic properties and mechanical strength compared with the PAN nanofiber membrane. GDES/PAN nanofiber membranes would provide new opportunities for the application of gelatin and DES in the electrospinning field.
在本工作中，将明胶溶解于三水合醋酸钠/尿素低共熔溶剂（DES）中，然后与聚丙烯腈（PAN）纺丝溶液混合，通过静电纺丝制备复合纳米纤维膜。研究了明胶/DES（Gel/DES）溶液和明胶/DES/PAN（GDES/PAN）纺丝溶液的流变性能。此外，还对GDES/PAN纳米纤维膜的水蒸气透过率、水接触角、抗静电和力学性能进行了评估，并通过扫描电子显微镜（SEM）、能谱仪（EDS）和傅里叶变换红外光谱仪（FTIR）进一步表征了GDES/PAN纳米纤维膜的组成和结构。由于DES成分和明胶的引入，复合纳米纤维呈现出表面光滑、直径小、分布均匀和连续性好的特点。与PAN纳米纤维膜相比，GDES/PAN纳米纤维膜还表现出理想的透气性能、亲水性、抗静电性能和机械强度。GDES/PAN纳米纤维膜将为明胶和DES在静电纺丝领域的应用提供新的机遇。
