Coufal Radek, Fijalkowski Mateusz, Adach Kinga, Bu Huaitian, Karl Christian W, Mikysková Eliška, Petrík Stanislav
Department of Science and Research, Faculty of Health Studies, Technical University of Liberec, 461 17 Liberec, Czech Republic.
Department of Advanced Materials, Institute for Nanomaterials, Advanced Technologies and Innovation (CXI), Technical University of Liberec, 461 17 Liberec, Czech Republic.
Polymers (Basel). 2024 May 12;16(10):1382. doi: 10.3390/polym16101382.
Polypropylene-based aerogels with high surface area have been developed for the first time. By chemical crosslinking of polypropylene with oligomeric capped-end amino compounds, followed by dissolution, thermally induced phase separation, and the supercritical CO drying process or freeze-drying method, the aerogels exhibit high specific surface areas up to 200 m/g. Moreover, the silica-cage multi-amino compound was utilized in a similar vein for forming hybrid polypropylene aerogels. According to the SEM, the developed polypropylene-based aerogels exhibit highly porous morphology with micro-nanoscale structural features that can be controlled by processing conditions. Our simple and inexpensive synthetic strategy results in a low-cost, chemically resistant, and highly porous material that can be tailored according to end-use applications.
首次开发出了具有高比表面积的聚丙烯基气凝胶。通过聚丙烯与低聚封端氨基化合物的化学交联，随后进行溶解、热致相分离以及超临界CO₂干燥过程或冷冻干燥法，这些气凝胶展现出高达200 m²/g的高比表面积。此外，类似地利用二氧化硅笼状多氨基化合物来形成杂化聚丙烯气凝胶。根据扫描电子显微镜（SEM）结果，所开发的聚丙烯基气凝胶呈现出具有微纳米级结构特征的高度多孔形态，这些特征可通过加工条件进行控制。我们简单且低成本的合成策略得到了一种低成本、耐化学腐蚀且高度多孔的材料，该材料可根据最终用途进行定制。
