Abstract Three different solvent mixtures were used to prepare electrospun membranes based on polylactic acid (PLA), polyethylene oxide (PEO) and enzymatic cellulose nanofibers (CNF). The materials were characterized from a morphological, spectroscopic, mechanical and rheological point of view. Furthermore, swelling test were performed in order to assess the water uptake of each sample. The results put into evidence that the choice of the solvents affects the structure and the properties of the membranes. Among the protocols tested, using chloroform/acetone/ethanol mixture was found to allow a high degree of CNF dispersion and a good electrospinnability of polymer solutions. These features led to membranes with impressive improvement of mechanical properties (+350% in stiffness, +350% in tensile strength and +500% in toughness) with respect to those of PLA/PEO and dramatically increased the water uptake of these materials (up to +350% within 120 min).

中文翻译：

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酶促纤维素纳米纤维增强电纺PLA-PEO膜的加工-结构-性能关系

摘要 使用三种不同的溶剂混合物制备基于聚乳酸 (PLA)、聚环氧乙烷 (PEO) 和酶促纤维素纳米纤维 (CNF) 的电纺膜。从形态学、光谱学、力学和流变学的角度对材料进行了表征。此外，进行溶胀试验以评估每个样品的吸水率。结果表明，溶剂的选择会影响膜的结构和性能。在测试的协议中，发现使用氯仿/丙酮/乙醇混合物可以实现高度的 CNF 分散和聚合物溶液的良好电纺性。这些特性使膜具有显着的机械性能改进（刚度 +350%，