文献类型：期刊文献

英文题名：Tung Oil-Based Unsaturated Co-ester Macromonomer for Thermosetting Polymers: Synergetic Synthesis and Copolymerization with Styrene

作者：Liu, Chengguo[1,2,3,4] Shang, Qjanqian[1,2,3,4] Jia, Puyou[1,2,3,4] Dai, Yan[1,2,3,4] Zhou, Yonghong[1,2,3,4] Liu, Zengshe[5]

第一作者：刘承果;Liu, Chengguo

通信作者：Zhou, YH[1];Zhou, YH[2];Zhou, YH[3];Zhou, YH[4];Liu, ZS[5]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, 16 Suojin North Rd, Nanjing 210042, Jiangsu, Peoples R China;[2]Natl Engn Lab Biomass Chem Utilizat, 16 Suojin North Rd, Nanjing 210042, Jiangsu, Peoples R China;[3]State Forestry Adm, Key Lab Forest Chem Engn, 16 Suojin North Rd, Nanjing 210042, Jiangsu, Peoples R China;[4]Key Lab Biomass Energy & Mat, 16 Suojin North Rd, Nanjing 210042, Jiangsu, Peoples R China;[5]USDA ARS, Biooils Res, Natl Ctr Agr Utilizat Res, 1815 N Univ St, Peoria, IL 61604 USA

年份：2016

卷号：4

期号：6

起止页码：3437-3449

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20162402495891);Scopus(收录号：2-s2.0-84973541128);WOS:【SCI-EXPANDED(收录号:WOS:000377425900058)】；

基金：The authors are grateful to the financial support from the National Natural Science Foundation of China (31300489), the Fundamental Research Funds for the Central Nonprofit Research Institution of the Chinese Academy of Forestry (CAF (CAFYBB2014QB022), and the Fundamental Research Funds from Jiangsu Province Biomass Energy and Materials Laboratory (JSBEM-S-201501).

语种：英文

外文关键词：Tung oil; Unsaturated coester; Thermosetting polymer; Unsaturated polyester resin (UPR); Synergetic modification; Azeotropic copolymerization; Curing behavior

摘要：A novel unsaturated co-ester (co-UE) macro monomer containing both maleates and acrylates was synthesized from tung oil (TO) and its chemical structure was characterized by FT-IR, H-1 NMR, C-13 NMR, and gel permeation chromatography (GPC). The monomer was synthesized via a new synergetic modification of TO, by introducing maleic groups first and acrylic groups subsequently onto TO molecules. The influence of experimental factors on thermomechanical properties of the . cured bioresins was evaluated to better understand structure property relationships of the biomaterials and optimize experimental conditions. The obtained TO-based co-UE monomer possessed a highly polymerizable C=C functionality, consequently resulting in rigid bioplastics with high cross-link densities (v(e)) and excellent mechanical properties. For instance, the bioplastic prepared under the optimal synthesis conditions demonstrated a v(e) of 4.03 X 10(3) mol/m(3), storage modulus at 25 degrees C of 2.40 GPa, and glass transition temperature (T-g) of 127 degrees C, as well as tensile strength and modulus at 36.3 MPa and 1.70 GPa, respectively. A new theory for determining optimal comonomer concentration was further developed according to the copolymerization equation. The proposed theory accurately predicted the best styrene dosage for the co-UE monomer. At last, the hydroxyethyl acrylate (HEA)-modified TO-based resin was compared with the unmodified one in thermomechanical properties, thermal stability, microstructural morphologies, and curing behaviors. The new co-UE bioresin showed higher C=C functionality and cross-link density, superior properties including T-g and thermal stability, and similar curing behaviors. The developed eco-friendly rigid biomaterials provide potential application in structural plastics such as sheet molding compounds.