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机械上坚固的基于纤维素的压电弹性体由可滑动的多聚酸交叉连接器形成
Bitgaram Kim1, Moonseok Jang1, Sohyun Heo2
1Department of Materials Science and Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
ACS macro letters
|December 1, 2023
概括
研究人员通过将纤维素与聚氨酸 (PR) 交叉连接而开发出一种基于纤维素的强大的压电弹性体. 这种新材料显示了增强的性和功率密度,提高了压电装置的性能和机械强度.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术 纳米技术
背景情况:
- 纤维素具有高结晶性,使其成为压电应用的有希望的材料.
- 然而,原生纤维素的加工能力较差,机械性较弱,限制了其实际使用.
- 开发基于纤维素的先进材料对于下一代压电设备至关重要.
研究的目的:
- 为了提高基于纤维素的压电材料的适用性.
- 开发一种强大的基于纤维素的压电弹性体,具有改进的性能.
- 为了研究聚洛他森交叉链接对纤维素特性的影响.
主要方法:
- 将纤维素与聚氨酸 (PR) 交叉结合,以创建一个新的弹性体.
- 研究由此产生的材料的机械性能和晶体结构.
- 通过极化歇斯底里循环和电压生成测量评估铁电和压电特性.
主要成果:
- 与eHPC100 (7.57 MJ m-3) 相比,eHPC25PR75弹性体具有2.7倍以上的性 (20.4 MJ m-3).与此相比,eHPC25PR75弹性体具有2.7倍以上的性 (20.4 MJ m-3).
- 对于eHPC25PR75与eHPC100 (0.321μW cm-2) 相比,观察到功率密度高4.2倍 (1.34μW cm-2).
- 开发的弹性体表现出对机械振动的压力敏感性,适合强大的设备.
结论:
- 将纤维素与聚洛他森交叉连接显著提高了机械强度和压电性能.
- 增强的基于纤维素的压电弹性体为高性能压电设备提供了可行的材料.
- 这项研究为设计具有优越性质的先进压电材料提供了一条途径.
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