CAJ | 학술논문

以竹纤维为原料,正硅酸乙酯( TEOS)为无机前驱体,使用溶胶-凝胶法制备竹纤维/SiO2杂化材料。通过X-射线衍射分析(XRD)、红外分析(FTIR)、扫描电镜分析(SEM)和热重分析(TG)研究了杂化材料的结构特征和热性能。结果表明,竹纤维的空隙被TEOS自身水解缩合生成的SiO2凝胶粒子填充,竹纤维素中的羟基与TEOS水解产生的羟基发生缩合反应,生成Si—O—C键,形成无机/生物质杂化材料。竹纤维/SiO2杂化材料的热稳定性要好。竹纤维/SiO2杂化材料的热解起始温度为298.2℃,1000℃时的残余物约为总重的50%。
이죽섬유위원료,정규산을지( TEOS)위무궤전구체,사용용효-응효법제비죽섬유/SiO2잡화재료。통과X-사선연사분석(XRD)、홍외분석(FTIR)、소묘전경분석(SEM)화열중분석(TG)연구료잡화재료적결구특정화열성능。결과표명,죽섬유적공극피TEOS자신수해축합생성적SiO2응효입자전충,죽섬유소중적간기여TEOS수해산생적간기발생축합반응,생성Si—O—C건,형성무궤/생물질잡화재료。죽섬유/SiO2잡화재료적열은정성요호。죽섬유/SiO2잡화재료적열해기시온도위298.2℃,1000℃시적잔여물약위총중적50%。
Bamboo fibers/SiO2 hybrid materials were prepared by sol-gel method,using bamboo fibers as raw materials and TEOS as inorganic precursors. The structure characteristics of hybrid materials were an-alyzed by XRD,FTIR,SEM and TG. The results showed that the gaps between bamboo fibers were filled by SiO2 gel particles prepared by hydrolysis condensation of TEOS,the hydroxyl groups from hydrolysis of TEOS reacted with hydroxyl groups from bamboo fibers, which formed Si—O—C bonds and destroyed crystal structure of cellulose. The initial pyrolysis temperature and final residual amount of bamboo fibers/SiO2 hybrid materials are 298. 2 ℃ and 50%,respectively.