在提烯衍生型立体elastomers中的机色和应变诱导结晶
Virginia C Ritter1, Samantha M McDonald1, Andrey V Dobrynin2
1Department of Chemistry, Duke University, Durham, NC, 27708, USA.
Advanced materials (Deerfield Beach, Fla.)
|July 3, 2023
概括
这项研究揭示了拉伸弹性体如何激活分子记者,将宏观材料行为与分子变化联系起来. 这些发现使得可回收的,具有可调节性质的应变感应聚合物的开发成为可能.
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
- 机械化学 机械化学
背景情况:
- 弹性体在张力下表现出应变诱导结晶 (SIC),从应变硬化过渡到SIC.
- 聚合物中的机械激活与拉伸有关,这表明与SIC的潜在相互作用.
研究的目的:
- 研究新型立体elastomers中应变诱导结晶 (SIC) 和机械孔激活之间的关系.
- 开发可回收,应变感应的聚合物,通过结合螺旋机械.
主要方法:
- 合成的醇-基衍生型立体elastomers与螺旋 (SP) 机械孔共振合.
- 进行了单轴拉伸试验,并分析了机色学和SIC相关性.
- 研究了依赖应变速率的机械激活和逆转动力学.
主要成果:
- SP-doped弹性体的特性与无兴奋剂对照相一致,SP充当机械状态报告员.
- 机械染色与SIC相关,以一种取决于菌株速率的方式.
- 激活的机械仍处于强力激活状态,可以调节的反转率.
结论:
- 这项研究建立了宏观SIC和分子机械激活在弹性体之间的联系.
- 开发的聚合物是可回收的,并显示出应变传感,形态传感和形状记忆应用的潜力.
- 可调节的机械孔回归动力学可以精确控制材料的反应.
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