豌豆淀粉基聚合物溶液的浓度和老化时间对电纺纳米纤维制造的影响

IF 3.1 4区工程技术 Q2 POLYMER SCIENCE

Polymers for Advanced Technologies Pub Date : 2024-06-24 DOI:10.1002/pat.6479

Elder Pacheco da Cruz, Felipe Nardo dos Santos, Jaqueline Ferreira de Souza, Estefania Júlia Dierings de Souza, Laura Martins Fonseca, André Ricardo Fajardo, Elessandra Rosa da Zavareze, Alvaro Renato Guerra Dias

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引用次数: 0

摘要

聚合物溶液的浓度和老化时间是影响其粘度的关键因素，在电纺纳米纤维的制造中起着至关重要的作用。在此基础上，我们评估了老化时间（24 小时和 48 小时）和豌豆淀粉浓度（10%、20% 和 30%，重量/体积）对生产电纺纳米纤维的聚合物溶液的影响。对溶液的流变性、导电性和取代度进行了评估。对纳米纤维的形态、尺寸分布、化学性质和热性能进行了分析。淀粉的取代度从 1.17 到 1.56 不等。总体而言，随着淀粉浓度的增加和聚合物溶液老化时间的延长，导电性降低。使用浓度为 10%的淀粉可从胶囊过渡到纤维，而使用浓度为 20%和 30%的淀粉则可制造出均匀、圆柱形和无规的纳米纤维，其直径从 89 纳米到 373 纳米不等。没有观察到粘度的明显影响；另一方面，老化时间增加了纳米纤维的平均直径。此外，制备的纳米纤维的分解温度低于生淀粉。制备的纳米纤维作为封装不同化合物的壁材，在生物医学和食品领域的应用具有很大的潜力。

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Impact of concentration and aging time of pea starch‐based polymeric solutions on the fabrication of electrospun nanofibers

Polymer concentration and aging time of polymeric solutions are crucial factors that can influence their viscosity, playing an essential role in the fabrication of electrospun nanofibers. Based on this, herein we evaluated the impact of aging time (24 and 48 h) and pea starch concentration (10%, 20%, and 30%, wt/vol) on the polymeric solutions to produce electrospun nanofibers. Solutions were evaluated by rheology, electrical conductivity, and degree of substitution. The nanofibers were analyzed by morphology, size distribution, chemical nature, and thermal properties. The degree of substitution of starches varied from 1.17 to 1.56. Overall, electrical conductivity decreased with increasing starch concentration and aging time of the polymeric solutions. The use of 10% starch displayed a transition from capsules to fibers, while 20% and 30% starch were able to manufacture homogenous, cylindrical, and random nanofibers with diameters varying from 89 to 373 nm. A significant impact of viscosity was not observed; on the other hand, aging time increased the average diameter of nanofibers. Besides, the fabricated nanofibers showed a lower decomposition temperature than raw starch. The fabricated nanofibers have great potential as wall materials for the encapsulation of different compounds and applications in the biomedical and food sectors.

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来源期刊

Polymers for Advanced Technologies 工程技术-高分子科学

CiteScore

6.20

自引率

5.90%

发文量

337

审稿时长

2.1 months

期刊介绍： Polymers for Advanced Technologies is published in response to recent significant changes in the patterns of materials research and development. Worldwide attention has been focused on the critical importance of materials in the creation of new devices and systems. It is now recognized that materials are often the limiting factor in bringing a new technical concept to fruition and that polymers are often the materials of choice in these demanding applications. A significant portion of the polymer research ongoing in the world is directly or indirectly related to the solution of complex, interdisciplinary problems whose successful resolution is necessary for achievement of broad system objectives. Polymers for Advanced Technologies is focused to the interest of scientists and engineers from academia and industry who are participating in these new areas of polymer research and development. It is the intent of this journal to impact the polymer related advanced technologies to meet the challenge of the twenty-first century. Polymers for Advanced Technologies aims at encouraging innovation, invention, imagination and creativity by providing a broad interdisciplinary platform for the presentation of new research and development concepts, theories and results which reflect the changing image and pace of modern polymer science and technology. Polymers for Advanced Technologies aims at becoming the central organ of the new multi-disciplinary polymer oriented materials science of the highest scientific standards. It will publish original research papers on finished studies; communications limited to five typewritten pages plus three illustrations, containing experimental details; review articles of up to 40 pages; letters to the editor and book reviews. Review articles will normally be published by invitation. The Editor-in-Chief welcomes suggestions for reviews.