Embedding of the functional materials into aerogel powders was realized via the filtration method. In this work, the effect of aerogel on the molecule structure of the embedded polyethylene glycol (PEG) was investigated by dispersing aerogel powders in 20 wt% PEG aqueous solution with subsequent filtration method. The encapsulation of the PEG in the aerogel was characterized by isothermal nitrogen (N₂) adsorption/desorption. The structure of the embedded PEG in the aerogel powders was investigated via SEM-EDS, FE-SEM, FT-IR, XRD. TG-DTA, DSC, and leakage test. It was found that the only physical capillary force worked to adsorb PEG molecules from its solution by the aerogel powders. The BET surface area and the DFT pore volume of the PEG/aerogel powders were reduced obviously when compared with pure aerogel powders. The ability of the pores in the aerogel powders ranging from 14 nm to 16 nm to adsorbing the PEG molecules from the water system was weak. The crystallinity of the PEG was significantly reduced because of the limited space for crystal growth, and the decomposed temperature and thermal capacity decreased correspondingly.

通过过滤方法将功能材料嵌入气凝胶粉末中。在这项工作中，通过将气凝胶粉末分散在20 wt％PEG水溶液中并采用随后的过滤方法，研究了气凝胶对包埋的聚乙二醇（PEG）分子结构的影响。PEG在气凝胶中的包封以等温氮气（N ₂）吸附/解吸。通过SEM-EDS，FE-SEM，FT-IR，XRD研究了气凝胶粉末中包埋的PEG的结构。TG-DTA，DSC和泄漏测试。发现唯一的物理毛细作用是通过气凝胶粉末从其溶液中吸附PEG分子。与纯气凝胶粉相比，PEG /气凝胶粉的BET表面积和DFT孔体积明显减少。气凝胶粉末中从14 nm到16 nm的孔隙吸收水系统中PEG分子的能力很弱。由于有限的晶体生长空间，PEG的结晶度显着降低，分解温度和热容量相应降低。