文献类型：期刊文献

英文题名：Green preparation of robust hydrophobic bio-based epoxy resin with low dielectric constant

作者：Fu, Fei[1,2] Shen, Minggui[1] Wang, Dan[1] Liu, He[1] Xu, Xu[2] Shang, Shibin[1] Song, Zhanqian[1] Song, Jie[3]

第一作者：Fu, Fei

通信作者：Shen, MG[1];Song, ZQ[1]|[a0005c3716bb5fed5ea85]宋湛谦;

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat,Natl Engn Lab Biomas, Key & Open Lab Forest Chem Engn,State Forestry Ad, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Peoples R China;[3]Univ Michigan, Dept Chem & Biochem, Flint, MI 48502 USA

年份：2022

卷号：188

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20223812764523);Scopus(收录号：2-s2.0-85138039069);WOS:【SCI-EXPANDED(收录号:WOS:000878685000070)】；

基金：This work was supported by Key R&D Projects of Guangxi Zhuang Autonomous Region (No. AB20238008).

语种：英文

外文关键词：Epoxidized soybean oil (ESO); Benzoxazine; Cross-linking density; Hydrogen bonds; High-performance

摘要：Epoxidized soybean oil (ESO) thermosets show poor performance owing to the low cross-linking density and flexibility of their backbone structure. Herein, fully bio-derived benzoxazine (GD) cured ESO thermosets (PGEs) with high-performance were prepared through a green process. As a curing agent, GD improved the cross-linking density and rigidity of ESO resins. Moreover, different types of hydrogen bonds formed in the PGEs, further strengthening the intermolecular interactions. Therefore, the glass transition temperature (T-g) and tensile strength of PGEs attained 93 degrees C and 34 MPa, respectively, which are higher than those reported for conventional ESO resins. Additionally, PGEs exhibited substantial hydrophobicity and a low dielectric constant, which can be associated with complex intermolecular and intramolecular hydrogen bonds within the thermoset network. Furthermore, as the GD content in PGE increased, the dielectric constant and water absorption of the polymer reduced to 2.72 % and 0.52 %, respectively. Herein, the preparation of novel all-biological ESO thermosets using GD as the curing agent is reported, providing a green and convenient strategy for the design of high-performance ecological materials.