In situ development of bio-based polyurethane-blend-epoxy hybrid materials and their nanocomposites with modified graphene oxide via non-isocyanate route
In situ development of bio-based polyurethane-blend-epoxy hybrid materials and their nanocomposites with modified graphene oxide via non-isocyanate route
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DOI：
10.1002/pi.5612
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发表时间：
2018-08-01
影响因子：
3.2
通讯作者：
Dolui, Swapan K.
中科院分区：
文献类型：
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作者：
Doley, Simanta;Sarmah, Asish;Dolui, Swapan K.
我们开发了一系列向日葵油基非异氰酸酯聚氨酯(NIPU)-共混环氧复合材料（HNIPUs）及其胺功能化氧化石墨烯（AF-GO）纳米复合材料。首先，以环氧化向日葵油为原料，在50bar的压力和110℃的温度下与二氧化碳反应，合成了含五元环碳酸酯的碳酸化向日葵油（CSFO）。然后，以异草酮二胺为固化剂，将CSFO与市售的环氧树脂（CSFO的比例分别为10%、20%和30wt%）混合，合成了一系列HNIPUs。环氧树脂含量为30wt%的HNIPU表现出最好的力学性能。最后，用不同量的AF-GO（0.3、0.6和1.0wt%）制备了30wt%的hnipu基纳米复合材料，并利用傅里叶变换红外光谱、H-1核磁共振光谱、x射线衍射和扫描电镜对其进行了表征。这些结果强调了这种环保方法在制备可再生HNIPU和高性能纳米复合材料方面的潜力。(c) 2018年化学工业学会
We developed a series of sunflower oil-based non-isocyanate polyurethane (NIPU)-blend-epoxy hybrid materials (HNIPUs) and their nanocomposites with amine-functionalized graphene oxide (AF-GO). Firstly, carbonated sunflower oil (CSFO) containing five-membered cyclocarbonate groups was synthesized by the reaction of epoxidized sunflower oil with carbon dioxide (CO2) at a pressure of 50bar and temperature of 110 degrees C. Then, a series of HNIPUs were synthesized using a mixture of CSFO and a commercially available epoxy resin in various amounts (10, 20 and 30wt% with respect to CSFO) using isophorone diamine as the curing agent. The HNIPU with 30wt% epoxy showed the best mechanical properties. Finally, nanocomposites of 30wt% HNIPU-based composition were prepared with various amounts of AF-GO (0.3, 0.6 and 1.0wt%) and were characterized using Fourier transform infrared and H-1 NMR spectroscopies, X-ray diffraction and scanning electron microscopy. These results emphasize the potentiality of this environmentally friendly approach for preparing renewable HNIPU and nanocomposite materials of high performances. (c) 2018 Society of Chemical Industry