文献类型：期刊文献

英文题名：Synthesis and characterization of novel renewable castor oil-based UV-curable polyfunctional polyurethane acrylate

作者：Hu, Yun[1] Liu, Chengguo[1] Shang, Qianqian[1] Zhou, Yonghong[1,2]

第一作者：胡云

通信作者：Zhou, YH[1]

机构：[1]Chinese Acad Forest, Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Inst New Technol Forestry, Beijing 100091, Peoples R China

年份：2018

卷号：15

期号：1

起止页码：77-85

外文期刊名：JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH

收录：;EI(收录号：20173204035414);Scopus(收录号：2-s2.0-85026900069);WOS:【SCI-EXPANDED(收录号:WOS:000422788600006)】；

基金：This research was financially supported by Natural Science Foundation of Jiangsu Province (Grant No. BK20161122) and Major State Research & Development Program of China (Grant No. 2016YFD0600802).

语种：英文

外文关键词：Polyurethane acrylate; Castor oil; UV curable; Polyfunctionality

摘要：In recent years, a lot of interest has been given to renewable resources for their environmental friendliness and potential biodegradability in the synthesis of urethane-derived polymers. In this work, UV-curable castor oil-based polyfunctional polyurethane acrylate (COPUA) was prepared by the reaction of isophorone diisocyanate (IPDI) with castor oil and pentaerythritol triacrylate (PETA). The structures and molecular weights of the targeted IPDI-PETA and COPUA were characterized by FTIR, H-1 NMR, and GPC, respectively. In addition, the effect of reactive diluent content on damping properties, thermal stabilities, and mechanical properties of COPUA was characterized by dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and universal test machine. DMA revealed the copolymers had a glass transition temperature (T-g) from 31.81 to 48.09 degrees C. TGA showed that thermal initial decomposition temperatures were above 344.5 degrees C, indicating the copolymers had certain thermal stability. Finally, some physical properties of curing films were studied by the contact angle and water absorption, and the results showed that the coatings exhibited good hydrophobicity. The COPUA obtained from castor oil can be used as eco-friendly materials and other applications alternative to the use of other petrochemicals in coatings.