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首页> 美国卫生研究院文献>Polymers >Fabrication of Aliphatic Water-Soluble Polyurethane Composites with Silane Treated CaCO3
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Fabrication of Aliphatic Water-Soluble Polyurethane Composites with Silane Treated CaCO3

机译：硅烷处理的碳酸钙制备脂肪族水溶性聚氨酯复合材料

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摘要

In the present study, composites of water-soluble polyurethane/calcium carbonate (CaCO ) were prepared from a soft segment of hydroxyl-terminated polybutadiene (HTPB) and polyethylene glycol (PEG, average molecular weight = 4000) with aliphatic diisocyanates. The functionality of CaCO particles was modified using aminopropyltriethoxysilane (APTES), and was confirmed by Fourier-transform infrared spectroscopy (FTIR). The solubility, hydrophilic properties, and chemical structures of the composites were analyzed by water-solubility tests, contact angle measurements, and FTIR, respectively, and the successful production of the hydrophilic water-soluble polyurethane (WSPU) structure was demonstrated. The adhesion of surface-modified CaCO particles to the WSPU matrix and the thermal degradation properties of the neat WSPU and WSPU/CaCO composites were studied using field emission scanning electron microscopy (FE-SEM) and thermogravimetric analysis (TGA). The results demonstrated good adhesion of the surface-modified CaCO particles along with an improved thermal degradation temperature with the addition of CaCO particles to the WSPU matrix.
机译：在本研究中，水溶性聚氨酯/碳酸钙（CaCO）的复合材料是由羟基端基的聚丁二烯（HTPB）和聚乙二醇（PEG，平均分子量= 4000）的软链段与脂肪族二异氰酸酯制成的。使用氨基丙基三乙氧基硅烷（APTES）修改了CaCO颗粒的功能，并通过傅立叶变换红外光谱（FTIR）进行了确认。分别通过水溶性测试，接触角测量和FTIR分析了复合材料的溶解性，亲水性和化学结构，证明了亲水性水溶性聚氨酯（WSPU）结构的成功生产。使用场发射扫描电子显微镜（FE-SEM）和热重分析（TGA）研究了表面改性的CaCO颗粒对WSPU基质的附着力以及纯净WSPU和WSPU / CaCO复合材料的热降解性能。结果表明，通过向WSPU基质中添加CaCO颗粒，表面改性的CaCO颗粒具有良好的附着力，并改善了热降解温度。

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