开发基于循环烯聚合物的新型电纤维
Malihe Sabzekar1,2, Mahdi Pourafshari Chenar1, Mohamed Khayet2
1Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad 9177948944, Iran.
Nanomaterials (Basel, Switzerland)
|September 9, 2023
概括
研究人员成功地用特定的溶剂混合物和参数将循环烯聚合物 (COP) 电成无缺陷纤维. 后处理增强了纤维集成和机械性能,优化了COP纤维生产.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术纳米技术
背景情况:
- 循环烯酸聚合物 (COP) 具有独特的特性,但其电性仍未得到充分探索.
- 开发可靠的COP纤维制造方法对于先进的材料应用至关重要.
研究的目的:
- 系统地研究循环烯聚合物 (COP) 的电螺旋性.
- 优化电参数和后处理方法,以生产高质量的COP纤维.
- 探索溶剂和非溶剂对COP纤维形态和特性的影响.
主要方法:
- 系统选各种溶剂,溶剂混合物和电旋参数 (流速,距离,电压).
- 评估不同的后处理技术,包括在不同温度和压力下进行热压处理.
- 纤维形态,直径和机械性能的表征.
- 使用云点方法评估溶剂/非溶剂效应.
主要成果:
- 没有珠子的COP纤维成功地使用烯/二 (40/60重量%) 溶剂混合物与15重量%的COP进行制造.
- 最佳的电条件需要1毫升/小时的流量,15厘米的针收集器距离和12千伏的电压.
- 热压后处理 (120°C,5MPa,5分钟) 改善了纤维集成和减少了纤维间的距离.
- 增加后处理温度增强了纤维强度,但在断裂时延长减少,在玻璃过渡温度 (138°C) 以上观察到凝聚.
- 添加N,N-二甲基胺 (DMAc) 显著降低了COP纤维直径.
- 发现DMAc和特定的溶剂 (甲,甲) 可以增强COP的电螺旋性.
结论:
- COP的电旋是可行的,可以通过仔细选择溶剂和工艺参数来优化.
- 后处理策略,特别是热压,有效地提高了COP纤维的结构完整性和机械性能.
- 使用特定的非溶剂,如DMAc提供了控制COP纤维形态的途径,使直径减少.
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