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溶胶-凝胶法是生产玻璃膜片、玻璃纤维和玻璃纳米粒子的一种很好的方法。该法因所用的反应条件相对温和、简单易行而得到了广泛使用。这种技术使得合成各种化合物成为可能,如pH传感器、离子传感器、发光材料以及热致变色材料、生物活性化合物等等。现在正尝试将溶胶-凝胶法与先进的技术结合起来,用以制备具有新的、独特功能的纤维素纤维。纤维素纤维的制备是采用N-甲基吗啉-N-氧化物(NMMO)作为纤维素溶剂。所得纤维含有高达30%(w/w)的SiO2纳米粒子。通过检测改性纤维的机械性能来观察改性剂对纤维的影响。同时采用热重分析、WAXS、X射线扫描、29S-NMR固态光谱分析来检测改性纤维。
Sol-gel method is a good method to produce glass membrane, glass fiber and glass nanoparticles. This method is widely used due to the relatively mild reaction conditions used and its ease of use. This technique makes it possible to synthesize various compounds such as pH sensors, ion sensors, luminescent materials, and thermochromic materials, biologically active compounds and the like. Attempts are now being made to combine the sol-gel process with advanced technology to make cellulose fibers with new, unique functionality. Cellulose fibers were prepared by using N-methylmorpholine-N-oxide (NMMO) as a cellulose solvent. The resulting fibers contain up to 30% (w / w) SiO2 nanoparticles. By testing the mechanical properties of modified fibers to observe the impact of modifiers on the fibers. At the same time, the modified fibers were detected by thermogravimetric analysis, WAXS, X-ray scanning and 29S-NMR solid-state spectroscopy.