文献类型：期刊文献

英文题名：Development of biobased unsaturated polyester resin containing highly functionalized castor oil

作者：Liu, Chengguo[1,2] Li, Jun[3] Lei, Wen[4] Zhou, Yonghong[1]

第一作者：刘承果;Liu, Chengguo

通信作者：Liu, CG[1]

机构：[1]Chinese Acad Forest, Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]CAF, Inst Forest New Technol, Beijing 100091, Peoples R China;[3]Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China;[4]Nanjing Forestry Univ, Coll Sci, Nanjing 210037, Jiangsu, Peoples R China

年份：2014

卷号：52

起止页码：329-337

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20134917059195);Scopus(收录号：2-s2.0-84888785938);WOS:【SCI-EXPANDED(收录号:WOS:000332189200045)】；

基金：The authors are grateful to the financial support from the National Natural Science Foundation of China (No. 31300489), the Chinese National Special Fund for International Cooperation of Science and Technology (No. 2011DFA32440), and the Special Fund of Fundamental Research from Chinese Academy of Forest (No. CAFINT2011C02). Prof. Brent Tisserat from National Center for Agricultural Utilization Research (NCAUR), U.S. Department of Agriculture is also greatly appreciated for the language help.

语种：英文

外文关键词：Functionalized castor oil; Unsaturated polyester resin; Biomodifier; High functionality; Structural plastic

摘要：A highly functionalized castor oil product mainly composed of castor oil pentaerythritol glyceride maleates (COPERMA) was employed to fabricate a partial biobased unsaturated polyester resin (UPR) through blending it with petroleum-based UPR. The COPERMA product synthesized was characterized by FT-IR, H-1 NMR, and ESI-MS to determine its possible structure and its functionality. The H-1 NMR results showed that the maleate C=C functionality of the COPERMA product was high (2.62). This highly functionalized product was then mixed with 35 wt% styrene before blending this mix with petroleum-derived UPR to prepare a new partial biobased UPR. Physical, thermal, and mechanical properties of the UPR/COPERMA resins were carefully studied. Physical properties data indicate that the resultant biobased resins are suitable for liquid molding process and had a less shrinkage than the neat UPR. Compared to the neat UPR, the cured UPR/COPERMA resins demonstrated comparable or even better thermal and mechanical properties when the content of COPERMA resin was up to 10 wt%. When the content of COPERMA resin increased to 20 wt%, the tensile strength and storage modulus at 35.0 decreased gradually, but not as much as reported in other oil/UPR systems, while other properties, such as crosslink density, glass transition temperature, tensile and flexural moduli, and impact strength, were still improved. (C) 2013 Elsevier B.V. All rights reserved.