文献类型：期刊文献

英文题名：Self-Evolution of High Mechanical Strength Dry-Network Polythiourethane Thermosets into Neat Macroscopic Hollow Structures

作者：Zhou, Shang-Wu[1];Tong, Fei[1];Chen, Meng[1];Gu, Ruirui[1];Shi, Chen-Yu[1];Yu, Cheng-Yuan[1];Zhang, Qi[1];Qu, Da-Hui[1]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Inst Fine Chem,Sch Chem & Mol Engn,Key Lab Adv Ma, Shanghai 200237, Peoples R China

年份：2022

卷号：61

期号：14

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20220811681340);WOS:【SCI-EXPANDED(收录号:WOS:000843440200031)】；

基金：This work was supported by the National Natural Science Foundation of China (grants 22025503, 21790361, 22105071, 22105072), Shanghai Municipal Science and Technology Major Project (Grant 2018SHZDZX03), the Fundamental Research Funds for the Central Universities, the Programme of Introducing Talents of Discipline to Universities (grant B16017), Program of Shanghai Academic/Technology Research Leader (19XD1421100), Science and Technology Commission of Shanghai Municipality (21JC1401700) and the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study (grant SN-ZJUSIAS-006). F.T. also thanks the Shanghai Sailing Program (21YF1409200).

语种：英文

外文关键词：Macroscopic Hollow Structure; Network Transformation; Polythiourethane Thermosets; Self-Evolution

摘要：Organism-inspired hollow structures are attracting increasing interest for the construction of various bionic functional hollow materials. Next-generation self-evolution hollow materials tend to combine simple synthesis, high mechanical strength, and regular shape. In this study, we designed and synthesized a novel dry-network polythiourethane thermoset with excellent mechanical performance. The polymer film could evolve into a neat and well-organized object with a macroscopic hollow interior structure after being immersed in an aqueous NaOH solution. The self-evolution hollow structure originated from a hydrogen-bonded polymer network, which was later transformed into a network bearing both hydrogen bonds and ionic bonds. The swelling and thickness growth of this material could be controlled by the NaOH concentration and the immersion time. This unique self-evolution behavior was further utilized to produce a series of macroscopic 3D hollow-containing molds, which could be potentially applied in the production of smart materials.