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Effect of electrospinning parameters on production of polyvinyl alcohol/polylactic acid nanofiber using a mutual solvent
Polymers and Polymer Composites ( IF 2.1 ) Pub Date : 2021-06-22 , DOI: 10.1177/09673911211027126
Reyhaneh Fatahian 1 , Mohammad Mirjalili 1 , Ramin Khajavi 2 , Mohammad Karim Rahimi 3 , Navid Nasirizadeh 1
Affiliation  

Differences in the properties of poly(vinyl alcohol) (PVA) and poly (lactic acid) (PLA) polymers have attracted much attention today. In this research, the aim is to produce PVA/PLA nanofibers with hydrophilicity and good mechanical properties using a mutual solvent. In this regard, the ability to produce PVA/PLA nanofibers using a mutual solvent was evaluated. The effect of electrospinning parameters on the morphology of nanofibers, hydrophilicity of nanofibers produced by measuring water absorption and contact angle as well as mechanical properties of nanofibers were considered. The results obtained from scanning electron microscopy analyses of the structure of these fibers showed that PVA had the highest viscosity of 5.64 Pa.s and the highest diameter of 260 nm, which decreased the thickness of the nanofibers with increasing PLA. And pure PLA had the lowest mean diameter of 76 nm. In the consideration of the mechanical properties of the prepared nanofibers, it was found that the combination of PLA and PVA nanofibers will lead to overlap the properties of each other and the creation of desirable mechanical properties. Moreover, in the investigation of water absorption and contact angle, it was concluded that the PVA/PLA was fully absorbed in less than 200 seconds and the samples have a contact angle of less than 52°. Finally, it was found that the average diameter of the produced nanofibers was decreased by increasing the voltage and the needle tip to collector distance by considering the PVA/PLA samples with a ratio of 50:50.



中文翻译:

静电纺丝参数对互溶剂制备聚乙烯醇/聚乳酸纳米纤维的影响

聚(乙烯醇)(PVA)和聚(乳酸)(PLA)聚合物在性能上的差异如今已引起广泛关注。在这项研究中,目的是使用互溶剂生产具有亲水性和良好机械性能的 PVA/PLA 纳米纤维。在这方面,评估了使用互溶剂生产 PVA/PLA 纳米纤维的能力。考虑了静电纺丝参数对纳米纤维形态、通过测量吸水率和接触角产生的纳米纤维的亲水性以及纳米纤维的机械性能的影响。这些纤维结构的扫描电子显微镜分析结果表明,PVA 的最高粘度为 5.64 Pa.s,最高直径为 260 nm,随着 PLA 的增加,纳米纤维的厚度减小。纯 PLA 的最低平均直径为 76 nm。在考虑制备的纳米纤维的机械性能时,发现PLA和PVA纳米纤维的组合将导致彼此的性能重叠并产生理想的机械性能。此外,在吸水率和接触角的研究中,得出的结论是 PVA/PLA 在不到 200 秒内被完全吸收,并且样品的接触角小于 52°。最后,通过考虑比例为 50:50 的 PVA/PLA 样品,发现通过增加电压和针尖到收集器的距离,所生产的纳米纤维的平均直径会减小。发现 PLA 和 PVA 纳米纤维的组合将导致彼此的性能重叠并产生所需的机械性能。此外,在吸水率和接触角的研究中,得出的结论是 PVA/PLA 在不到 200 秒内被完全吸收,并且样品的接触角小于 52°。最后,通过考虑比例为 50:50 的 PVA/PLA 样品,发现通过增加电压和针尖到收集器的距离,所生产的纳米纤维的平均直径会减小。发现 PLA 和 PVA 纳米纤维的组合将导致彼此的性能重叠并产生所需的机械性能。此外,在吸水率和接触角的研究中,得出的结论是 PVA/PLA 在不到 200 秒内被完全吸收,并且样品的接触角小于 52°。最后,通过考虑比例为 50:50 的 PVA/PLA 样品,发现通过增加电压和针尖到收集器的距离,所生产的纳米纤维的平均直径会减小。得出的结论是,PVA/PLA 在不到 200 秒内被完全吸收,样品的接触角小于 52°。最后,通过考虑比例为 50:50 的 PVA/PLA 样品,发现通过增加电压和针尖到收集器的距离,所生产的纳米纤维的平均直径会减小。得出的结论是,PVA/PLA 在不到 200 秒内被完全吸收,样品的接触角小于 52°。最后,通过考虑比例为 50:50 的 PVA/PLA 样品,发现通过增加电压和针尖到收集器的距离,所生产的纳米纤维的平均直径会减小。

更新日期:2021-06-22
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