Electrospun membranes obtained through electrospinning are very promising since they exhibit a high porosity and surface area. The present study proposes the use of gelatin (GL) made from fish by-products in combination with a polycationic polysaccharide (chitosan, CH) and a water-soluble polymer (polyethylene oxide, PEO) to obtain unitary, binary or even ternary nanofibrous membranes which would be suitable in different applications, such as biomaterials or filtration industry. This work aims to correlate the microstructure of final ternary membranes (GL–CH–PEO) and the properties of the solutions by evaluating their viscosity obtained through rheological characterization, as well as their conductivity and density, which are key parameters to obtain a suitable electrospinning processing technique. The results indicate that membranes with a fairly homogeneous distribution of fibers can be obtained using either biopolymer/PEO binary solutions (i.e., 00/85/30 or 05/00/35 systems) or even ternary solutions (05/85/35 or 05/85/35) with diameters shorter than 200 nm. In this sense, physicochemical characterization of the polymer/biopolymer solutions used for electrospinning processing technique is essential for the understanding of this technique.

中文翻译：

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通过电纺技术开发具有可控微观结构的明胶/壳聚糖膜

通过电纺丝获得的电纺膜非常有前途，因为它们显示出高的孔隙率和表面积。本研究建议将鱼副产品制成的明胶（GL）与聚阳离子多糖（壳聚糖，CH）和水溶性聚合物（聚环氧乙烷，PEO）结合使用，以获得单一，二元或什至三元的纳米纤维膜适用于不同的应用，例如生物材料或过滤行业。这项工作旨在通过评估通过流变表征获得的粘度以及电导率和密度（它们是获得合适的电纺丝的关键参数），来评估最终三元膜（GL-CH-PEO）的微观结构与溶液的性质之间的关系。处理技术。结果表明，可以使用生物聚合物/ PEO二元溶液（即00/85/30或05/00/35系统）或什至三元溶液（05/85/35或05）获得具有相当均匀纤维分布的膜。 / 85/35），直径短于200 nm。从这个意义上讲，用于静电纺丝加工技术的聚合物/生物聚合物溶液的物理化学表征对于理解该技术至关重要。