The present work focuses on the assessment of the ability of porcine plasma protein (PPP) to be electrospun satisfactorily to form fibre mats, and their rheological and morphological characterization. Porcine plasma is a by-product of meat industry that is produced in an amount much larger than the market's demand, resulting in a surplus. Thus, its revalorization through the development of innovative membranes with several applications (e.g., biomaterials and agricultural) would help to alleviate the environmental issue associated with its landfill. PPP solutions possess a relatively high conductivity, due to the abundance of polar residues (e.g., aspartic and glutamic acid) on its molecular structure, which may be a positive aspect in the electrospinning process. As no fibres can be obtained from a PPP single solution due to its very low viscosity (~ 8.5 mPa·s), polyvinyl alcohol (PVA) was considered for the preparation of mixed PPP + PVA solutions. Different PVA and PPP contents were used, ranging from 4 to 7% w/w and 2 to 8% w/w, respectively. All electrospinnable mixtures displayed pseudoplasticity (flow indexes, n ~ 0.88), compared to the Newtonian behaviour of the single systems (n = 1). Mixed solutions keeping PVA content at 7% w/w could form electrospun composite membranes without significant imperfections (e.g., beads). Those composites showed larger nanofiber diameters as PPP content increased from 2% w/w (~ 310 nm) to 8% w/w (~ 540 nm). Considering that both components are biodegradable, fibre mats here produced could be of high interest as eco-friendly materials.

目前的工作侧重于评估猪血浆蛋白（PPP）令人满意地电纺形成纤维毡的能力，以及它们的流变学和形态学表征。猪血浆是肉类工业的副产品，其产量远远超过市场需求，从而导致过剩。因此，通过开发具有多种用途（例如，生物材料和农业用途）的创新性膜来对其进行翻新，将有助于减轻与其掩埋场相关的环境问题。PPP溶液具有相对较高的电导率，这是由于其分子结构上存在大量极性残留物（例如天冬氨酸和谷氨酸），这在静电纺丝过程中可能是一个积极的方面。由于其粘度极低（〜8.5 mPa·s），无法从PPP单一溶液中获得纤维，因此可以考虑使用聚乙烯醇（PVA）来制备PPP + PVA混合溶液。使用了不同的PVA和PPP含量，分别为4至7％w / w和2至8％w / w。所有可电纺混合物均显示出假塑性（流动指数，Ñ  〜0.88），相对于所述单个系统（的牛顿行为Ñ  = 1）。保持PVA含量为7％w / w的混合溶液可以形成电纺复合膜而没有明显的瑕疵（例如，珠粒）。随着PPP含量从2％w / w（〜310 nm）增加到8％w / w（〜540 nm），这些复合材料显示出更大的纳米纤维直径。考虑到这两种成分都是可生物降解的，因此这里生产的纤维毡作为环保材料可能引起人们的极大兴趣。