Synthesis of a Fully Biobased Polyfunctional Vinyl Oligomer and Their UV Cured Films Prepared via Thiol-ene Coupling
Synthesis of a Fully Biobased Polyfunctional Vinyl Oligomer and Their UV Cured Films Prepared via Thiol-ene Coupling
复制标题
全生物基多官能乙烯基低聚物的合成及其通过硫醇-烯偶联制备的紫外固化薄膜
DOI：
10.32604/jrm.2019.07503
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发表时间：
2019-08
影响因子：
--
通讯作者：
Shen Liang
中科院分区：
文献类型：
--
作者：
Fu Changqing;Wang Jiahui;Chen Lie;Shen Liang
本文以菜籽油为原料，通过环氧化、无溶剂无催化剂的10-十一烯酸开环、10-十一碳酰氯酯化三步反应，成功地合成了高官能度的全生物基乙烯基齐聚物。然后将这些改性植物油与典型的硫醇单体（季戊四醇四（3-巯基丙酸酯）、季戊四醇三（3-巯基丙酸酯）和1，2-乙二硫醇）进行光聚合，制备了可再生聚合物。通过核磁共振和傅立叶变换红外光谱监测乙烯基低聚物的合成。所得乙烯基低聚物的碳-碳双键的平均数高至7.2。用傅里叶变换红外吸收光谱（FTIR-ATR）研究了植物油基乙烯基齐聚物的硫醇-烯光聚合动力学。此外，对紫外光固化膜的热物理性能和热稳定性进行了表征。所得聚合物具有优异的耐水性和热稳定性，有望在涂料和胶粘剂中得到应用。
In this paper, a fully bio-based vinyl oligomer with high functionalities was successfully prepared by three steps: epoxidation of rapeseed oil, solvent-free and catalyst-free ring opening by 10-undecylenic acid, and esterification with 10-undecenoyl chloride. Then, the renewable polymers were prepared by photo-polymerization of these modified vegetable oils and typical thiol monomers (pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tris (3-mercaptopropionate) and 1,2-ethanedithiol). The synthesis of the vinyl oligomer was monitored by nuclear magnetic resonance and Fourier-transform infrared spectroscopy. The average number of the carbon-carbon double bonds of the resulting vinyl oligomer is high to be 7.2. The kinetic of thiol-ene photo-polymerization of vegetable oil based vinyl oligomer was studied by FTIR-ATR analyses. In addition, the thermo-physical properties and thermal stability of UV-curable films were characterized. The resulting polymers exhibit excellent water resistance and thermals stability, which is promising to find application in coatings and adhesives.
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