论文标题
来自交联的环聚合物的超脱水弹性体
Super-stretchable Elastomer from Cross-linked Ring Polymers
论文作者
论文摘要
聚合物材料的可拉伸性对于许多应用，例如可拉伸电子设备和软机器人，但是传统的交联线性聚合物的可拉伸性受聚合物链之间的纠缠限制。我们使用分子动力学模拟显示，交联的环聚合物比交联线性聚合物明显更伸展。与线性聚合物相比，环聚合物之间的缠结不充当有效的交联。结果，交联环聚合物的可伸缩性取决于聚合物链之间的交联之间的最大延伸性，而不是在纠缠之间，如交联线性聚合物中的纠缠。在变形前，环聚合物的更紧凑构象也有助于可伸缩性的提高。
The stretchability of polymeric materials is critical to many applications such as stretchable electronics and soft robotics, yet the stretchability of conventional cross-linked linear polymers is limited by the entanglements between polymer chains. We show using molecular dynamics simulations that cross-linked ring polymers are significantly more stretchable than cross-linked linear polymers. Compared to linear polymers, the entanglements between ring polymers do not act as effective cross-links. As a result, the stretchability of cross-linked ring polymers is determined by the maximum extension of polymer strands between cross-links, rather than between entanglements as in cross-linked linear polymers. The more compact conformation of ring polymers before deformation also contributes to the increase in stretchability.
