文献类型：期刊文献

英文题名：Recyclable and reprintable biobased photopolymers for digital light processing 3D printing

作者：Zhu, Guoqiang[1,2] Zhang, Jinshuai[1,2] Huang, Jia[1,2] Qiu, Yuhao[1,2] Liu, Meiting[1,2] Yu, Jinni[1,2] Liu, Chengguo[1,2] Shang, Qianqian[1,2] Hu, Yun[1,2] Hu, Lihong[1,2] Zhou, Yonghong[1,2]

第一作者：Zhu, Guoqiang

通信作者：Liu, CG[1];Zhou, YH[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Res Ctr Low Carbon & Efficient Utilizat, Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Peoples R China;[2]Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China

年份：2023

卷号：452

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20224012830067);Scopus(收录号：2-s2.0-85139044089);WOS:【SCI-EXPANDED(收录号:WOS:000871021500003)】；

基金：This work was supported by the Fundamental Research Funds of CAF (CAFYBB2020QA005) and the National Natural Science Foundation of China (31822009) .

语种：英文

外文关键词：Recyclable 3D printing; Castor oil; Hindered urea bonds; Sacrificial molds; Thermochromic materials

摘要：Developing recyclable biobased photopolymers for UV-curable 3D printing is of great significance for sustainable development of 3D printing industry. In this work, novel recyclable and reprintable castor oil (CO)-based photopolymers for digital light processing (DLP) 3D printing were developed via hindered urea bonds, a type of dissociating dynamic covalent bonds. Remarkably, the printed objects could be recycled in 4 h at 90 degrees C or 2 h at 100 degrees C without any catalysts or solvents, and the recycled resins had similar physiochemical properties, polymerization kinetics, and printing resolutions as the original resin. Furthermore, reprintable sacrificial molds and thermochromic materials were achieved with the optimal biobased resin, which can be used in complicated model casting and information encryption/anti-counterfeiting areas. In particular, thermochmmic microcapsules could be recycled nondestructively from the printed thermochmmic materials and reused in DLP 3D printing.