文献类型：期刊文献

英文题名：Fully Bio-Based Polyhydroxyurethanes with a Dynamic Network from a Terpene Derivative and Cyclic Carbonate Functional Soybean Oil

作者：Liu, Xiuxiu[1,2] Yang, Xinxin[3] Wang, Siheng[3] Wang, Shibo[3] Wang, Zhiping[1] Liu, Shiwei[1] Xu, Xu[2] Liu, He[3] Song, Zhanqian[1,3]

第一作者：Liu, Xiuxiu

通信作者：Liu, SW[1];Xu, X[2];Liu, H[3]

机构：[1]Qingdao Univ Sci & Technol, Coll Chem Engn, Key Lab Multiphase Flow React & Separat Engn Shan, Qingdao 266042, Shandong, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Coll Chem Engn, Jiangsu Prov Key Lab Chem & Utilizat Agroforest B, Nanjing 210037, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Key Lab Chem Engn Forest Prod,Inst Chem Ind Fores, Natl Forestry & Grassland Adm,Natl Engn Lab Bioma, Nanjing 210042, Jiangsu, Peoples R China

年份：2021

卷号：9

期号：11

起止页码：4175-4184

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20211410179539);Scopus(收录号：2-s2.0-85103518372);WOS:【SCI-EXPANDED(收录号:WOS:000636758600023)】；

基金：This work was supported by the Fundamental Research Funds of CAF (CAFYBB2020QC003), the Key Research and Development Project of Shandong Province (2019GGX102021), the Shandong Provincial Natural Science Foundation, China (ZR2019MC030), and the National Natural Science Foundation of China (21805158).

语种：英文

外文关键词：fully bio-based; non-isocyanate polyurethanes; dynamic covalent bond exchange; self-healing; recyclability; shape memory

摘要：Polyhydroxyurethanes (PHUs), polyurethanes with excellent properties, are cured without poisonous isocyanate. The carbamate groups in the structure can undergo bond exchange in the presence of amino groups to improve their reprocessing and recyclability. As the demand for more "sustainable" polymers increases, research has focused on replacing fossil materials with renewable alternatives. 1,8-Menthane diamine (MDA) derived from turpentine is a potential raw material for curing with cyclic-carbonated soybean oil (CSBO) for preparing fully bio-based PHUs without solvents and catalysts. The amino groups from MDA facilitate bond exchange under autocatalysis in PHUs, and the rigid structure improves the thermal and mechanical properties of PHUs. PHUs with different cyclic carbonate/amino ratios are characterized to explain the importance of MDA in the performance of PHUs. Dynamic covalent bond exchange was studied through stress relaxation, which results in self-healing, recyclability, reprocessing, and shape memory. The mechanical properties and thermal stability can be almost completely recovered (>85%) after reprocessing several times, indicating that the network will be repaired by bond exchange. This work provides a promising strategy to utilize sustainable feedstocks for designing fully bio-based non-isocyanate polyurethanes and reveals the effect of the structure on the material properties.