文献类型：期刊文献

英文题名：Catalyst-Free Self-Healing Bio-Based Polymers: Robust Mechanical Properties, Shape Memory, and Recyclability

作者：Xu, Yazhou[1,2] Dai, Songlin[1] Bi, Liangwu[1,3] Jiang, Jianxin[2] Zhang, Haibo[1] Chen, Yuxiang[1,3]

第一作者：Xu, Yazhou;许玉芝

通信作者：Zhang, HB[1];Chen, YX[1];Chen, YX[2]|[a0005ed937047db97bfe9]陈玉湘;

机构：[1]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Inst Chem Ind Forest Prod, 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 Forest Re, Nanjing 210037, Peoples R China

年份：2021

卷号：69

期号：32

起止页码：9338-9349

外文期刊名：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

收录：;EI(收录号：20213410807219);Scopus(收录号：2-s2.0-85113687487);WOS:【SCI-EXPANDED(收录号:WOS:000687186300041)】；

基金：The authors would like to thank the National Key Research and Development Program of China (2016YFD0600804) and the National Key Technology R&D Program of China (2015BAD15B08) for financial support.

语种：英文

外文关键词：bio-based polymers; rosin; high mechanical strength; catalyst-free; self-healing

摘要：The poor mechanical properties and disadvantages of catalysts limit the application of self-healing materials. To address these issues, catalyst-free self-healing bio-based polymers (AESO-EMPA polymers) with robust mechanical properties were prepared using epoxidized maleopimaric anhydride (EMPA) and aminated epoxidized soybean oil (AESO). The AESO-EMPA polymers are recyclable and exhibit self-healing and shape memory because of the dual-dynamic network of multiple H-bonds and dynamic ester bonds in the structure. Under the synergistic catalysis of the tertiary amines and hydroxyl groups originated from the polymers, the polymers in this study achieve network rearrangement without the need for additional catalysts. The polymers also exhibit excellent mechanical properties with a tensile strength of 29.1 +/- 0.25 MPa and a T-g of 80.2 degrees C owing to the unique rigid backbone of rosin and the dual-dynamic network. The AESO-EMPA polymers can be used as reusable adhesives and exhibit excellent shear strength and repair rates.