Production of recycled EPS fibers by centrifugal spinning

IF 0.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materia-rio De Janeiro Pub Date : 2021-03-25 DOI:10.1590/S1517-707620210002.1254

G. Paganotto, G. Barros, V. G. Marques, A. Takimi

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引用次数: 4

Abstract

Centrifugal spinning is a new technique for producing of nano and microfibers that has a great differential: a higher production rate than those presented by traditional methods. Due to a great interest in using nano and microfibers in technological applications along with the environmental interest in polymer recycling, this research had the purpose of production fibers by centrifugal spinning from the expanded poly-styrene recycling and the evaluation of the influence of operational parameters such as the concentration of polymer solution and the speed of rotation in the average diameter and in the distribution of the diameters of fibers formed. The fibers obtained were characterized using the Scanning Electronic Microscopy (SEM) and they had their diameters measured using ImageJ software. The fibers obtained in this research were entangled, woven, fused, with a rough and porous surface, with bead formation and without directional ordering. The results obtained show that the polymer solution concentration was the most influential parameter in the fibers analyzed characteristics and, in general, its increase generates an increase in the average diameter. With the increase in rotation speed, there has been often a reduction in the presence of beads and microparticles due to the better stretching of the fibers. In less concentrated solutions, continuous fibers with more regular surfaces were obtained, however, promoting the higher production of beads. In the most concentrated solutions, we noticed the formation of porous fibers and very rough surfaces, as well as fused and woven fibers. Through the measurement of its diameters, it was possible to observe the obtaining of fibers with average diameters of 407,02 nm to 38113,20 nm, and the smallest value was obtained with the parameters of 5% w/w of polymer concentration and rotation speed of 15000 rpm and the highest value had 15% w/w concentration polymer and 10000 rpm. Keywords: centrifugal spinning, nanofibers, microfibers, recycled expanded polystyrene. 1

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离心纺丝法生产再生EPS纤维

离心纺丝是一种生产纳米和超细纤维的新技术，与传统方法相比，它的生产率有很大的不同。由于人们对纳米和微纤维在技术应用中的极大兴趣以及对聚合物回收的环保兴趣，本研究的目的是将回收的膨胀聚苯乙烯进行离心纺丝生产纤维，并评估操作参数(如聚合物溶液浓度和旋转速度)对形成的纤维的平均直径和直径分布的影响。用扫描电子显微镜(SEM)对所得纤维进行了表征，并用ImageJ软件对其直径进行了测量。本研究获得的纤维缠绕、编织、熔融，表面粗糙多孔，有珠状结构，无定向有序。结果表明，聚合物溶液浓度是影响纤维分析特性的最主要参数，一般情况下，聚合物溶液浓度的增加会导致平均直径的增加。随着旋转速度的增加，由于纤维的更好拉伸，珠子和微粒的存在通常会减少。然而，在浓度较低的溶液中，获得了具有更规则表面的连续纤维，促进了珠子的高产量。在最浓的溶液中，我们注意到多孔纤维和非常粗糙的表面的形成，以及熔融和编织纤维。通过对其直径的测量，可以观察到平均直径为407,02 nm ~ 38113,20 nm的纤维，当聚合物浓度为5% w/w，转速为15000 rpm时，得到最小值，当聚合物浓度为15% w/w，转速为10000 rpm时，得到最大值。关键词:离心纺丝，纳米纤维，微纤维，再生膨胀聚苯乙烯1

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来源期刊

Materia-rio De Janeiro MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

25.00%

发文量

审稿时长

6 weeks

期刊介绍： All the articles are submitted to a careful peer-reviewing evaluation process by the journal''s Editorial Board. The Editorial Board, reviewers and authors make use of a web based proprietary automated tool to deal with the reviewing procedures.the Revista Matéria''s article reviewing restricted access system - SEER. Authors are not informed about the identity of the reviewers.