文献类型：期刊文献

英文题名：Fully Biobased Degradable Vitrimer Foams: Mechanical Robust, Catalyst-Free Self-Healing, and Shape Memory Properties

作者：Tian, Yabing[1,2,3] Feng, Xuezhen[1] Wang, Chao[1] Shang, Shibin[1] Liu, He[1] Huang, Xujuan[4] Jiang, Jianxin[2] Song, Zhanqian[1] Zhang, Haibo[1]

第一作者：Tian, Yabing

通信作者：Zhang, HB[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forestry R, Nanjing 210037, Peoples R China;[4]Yancheng Inst Technol, Sch Chem & Chem, Yancheng 210042, Jiangsu, Peoples R China

年份：2024

卷号：16

期号：5

起止页码：6523-6532

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20240715536054);Scopus(收录号：2-s2.0-85184596520);WOS:【SCI-EXPANDED(收录号:WOS:001158703100001)】；

基金：The authors are grateful for the financial support provided by the National Natural Science Foundation of China (grant number: 32271817).

语种：英文

外文关键词：vitrimer foams; degradable; self-healing; shape memory; all-in-one foaming

摘要：Thermosetting foams have limited capabilities for recycling, reprocessing, or reshaping. Moreover, most of the foaming agents currently employed in these foams are derived from organic compounds sourced from petrochemicals, thereby posing a significant environmental threat due to heightened pollution. To solve these problems, a fully biobased degradable vitrimer foam (EPC-X) was fabricated using an environmentally friendly all-in-one foaming strategy by cross-linking epoxidized malepimaric anhydride (EMPA), 1,5-diaminopentane (PDA), and 1,5-diaminopentane carbamate (PDAC) as a latent curing-blowing agent. To our delight, the vitrimer foams exhibit excellent mechanical properties (2.86 +/- 0.11 MPa compressive strength) owing to their unique rigid rosin backbone and cross-linking networks. The presence of dynamic beta-hydroxy ester bonds and the self-catalytic behavior of tertiary amine groups facilitate network rearrangement without requiring additional catalysts, thereby resulting in the development of EPC-X with rapid self-healing and shape memory properties. The self-healing foam could support a weight of 500 g (approximately 562 times its own mass). Moreover, these high-performance vitrimer foams can also be easily degraded in an ethanolamine (EA) or NaOH solution under mild conditions. Such a design strategy offers an alternative approach for developing superior degradable and thermal stimuli-responsive thermosetting foams.