實驗與理論研究超分子在超低溫下的粘附特性
作者:
小柯機器人發布時間:2020/12/14 16:10:06
耐低溫膠粘劑在日常生活、科學研究和工業中有著廣泛的應用。目前,絕大多數耐低溫膠粘劑是傳統的聚合物體系。
在該研究中,研究人員在開發了一種新的策略,使低分子量膠粘劑在低溫下獲得強大和持久的粘接效果。水分子的引入和氫鍵的形成不僅引發了超分子聚合反應,同時賦予含水共聚物耐低溫性能。高分子超分子體系的含水量對低溫下的粘附行為起著至關重要的作用。在包括液氮在內的極低溫環境中,研究人員獲得了良好的粘附性能。
附:英文原文
Title: Supramolecular Adhesion at Extremely Low Temperatures: A Combined Experimental and Theoretical Investigation
Author: Xing Li, Jinlei Lai, Yan Deng, Jingfu Song, Gai Zhao, Shengyi Dong
Issue&Volume: December 10, 2020
Abstract: Adhesive materials that are resistant to low temperatures have wide applications in daily life, scientific research, and industry. Currently, the overwhelming majority of low-temperature-resistant adhesives are traditional polymer systems. In this study, a new strategy was developed to obtain strong and long-lasting adhesion effects from low-molecular-weight adhesives at low temperatures. The introduction of water molecules and the formation of hydrogen bonds not only triggered supramolecular polymerization but also endowed the water-involved copolymer with low-temperature resistance. The water content of the polymeric supramolecular system played a crucial role in exhibiting adhesion behavior at low temperatures. Good adhesion performance was obtained in extremely low-temperature environments, including liquid nitrogen.
DOI: 10.1021/jacs.0c10786
Source: https://pubs.acs.org/doi/10.1021/jacs.0c10786