实验与理论研究超分子在超低温下的粘附特性

作者：张馨予

本期文章：《美国化学会志》：Online/在线发表

湖南大学董盛谊团队采用实验结合理论研究揭示了超分子在超低温下的粘附特性。该研究成果发表在2020年12月10日出版的国际学术期刊《美国化学会志》。

耐低温胶粘剂在日常生活、科学研究和工业中有着广泛的应用。目前，绝大多数耐低温胶粘剂是传统的聚合物体系。

在该研究中，研究人员在开发了一种新的策略，使低分子量胶粘剂在低温下获得强大和持久的粘接效果。水分子的引入和氢键的形成不仅引发了超分子聚合反应，同时赋予含水共聚物耐低温性能。高分子超分子体系的含水量对低温下的粘附行为起着至关重要的作用。在包括液氮在内的极低温环境中，研究人员获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

期刊信息

JACS：《美国化学会志》，创刊于1879年。隶属于美国化学会，最新IF：14.612
官方网址：https://pubs.acs.org/journal/jacsat
投稿链接：https://acsparagonplus.acs.org/psweb/loginForm?code=1000