Okutan Merve, Boran Filiz, Ergün Ayça, Kanca Yusuf, Özkahraman Bengi, Deligöz Hüseyin
Department of Chemical Engineering, Hitit University, Çorum, Turkey.
Department of Chemical Engineering, İstanbul University-Cerrahpaşa, İstanbul, Turkey.
Turk J Chem. 2023 Apr 17;47(3):591-604. doi: 10.55730/1300-0527.3563. eCollection 2023.
Superhydrophobic and oleophilic modification of commercial acoustic melamine foam (MF) was made in this study. The modification was carried out with chitosan (CHI) and silica particles (SiO), by using both a layer-by-layer-like approach (LbL) and dip coating technique. Subsequently, 1-octadecanethiol was used as a secondary modification agent. QCM-D, SEM, and FTIR analyses confirmed that the coating was successfully performed. After the modification, the column wall thicknesses increased than that of MF and they ranged from 25% to 48% for modified MF with an LbL-like approach (MMF) and modified MF via dip coating technique (MMFd), respectively. The sorption experiments showed that modified MFs, which had a water contact angle (WCA) above 160°, could sorb several model pollutants (vegetable oil, chloroform, ethanol, and toluene) up to 76-130 times their original weight. It had been determined that MMF protects its open-pore structure better than that of MMFd, which indicated that MF has a more uniform pore structure after modification. Furthermore, after 10 cycles of the sorption and release process, there was no significant change in sorption capacity, and they preserved their mechanical stability and flexibility.
本研究对商用声学三聚氰胺泡沫（MF）进行了超疏水和亲油改性。改性采用壳聚糖（CHI）和二氧化硅颗粒（SiO），通过类似层层组装的方法（LbL）和浸涂技术进行。随后，使用1-十八烷硫醇作为二次改性剂。石英晶体微天平 - 耗散监测技术（QCM-D）、扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）分析证实涂层成功制备。改性后，柱壁厚度比MF增加，通过类似层层组装方法改性的MF（MMF）和通过浸涂技术改性的MF（MMFd）的柱壁厚度分别在25%至48%范围内。吸附实验表明，水接触角（WCA）高于160°的改性MF可以吸附几种模型污染物（植物油、氯仿、乙醇和甲苯），吸附量高达其原始重量的76 - 130倍。已确定MMF比MMFd能更好地保护其开孔结构，这表明MF改性后具有更均匀的孔结构。此外，在吸附和释放过程进行10个循环后，吸附容量没有显著变化，并且它们保持了机械稳定性和柔韧性。
