Tomkowiak Karolina, Mazela Bartłomiej, Szubert Zuzanna, Perdoch Waldemar
Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland.
Molecules. 2024 Sep 30;29(19):4661. doi: 10.3390/molecules29194661.
The need for sustainable, biodegradable materials to address environmental challenges, such as oil-water separation, is growing. Cellulose-based absorbents offer an eco-friendly alternative to synthetic materials. However, their hydrophobicity must be enhanced for efficient application. In this study, cellulose-based sorbents derived from Kraft and half-bleached chemo-thermomechanical pulp (BCTMP) were hydrophobized using silanization and alkyl ketene dimer (AKD) techniques. Hydrophobic properties were successfully imparted using methyltrimethoxysilane (MTMOS), n-octyltriethoxysilane (NTES), and N-(2-Aminoethyl)-3-aminopropyltrimethoxysilane (AATMS), with water contact angles ranging from 120° to 140°. The water sorption capacity was significantly reduced to below 1 g/g, whereas the oil sorption capacity remained high (19-28 g/g). The most substantial reduction in water vapor absorption (3-6%) was observed for the MTMOS- and AATMS-silanized samples. These results demonstrate the potential of hydrophobized cellulose-based sorbents as sustainable alternatives for oil-water separation, contributing to environmentally friendly water treatment solutions.
对可持续、可生物降解材料以应对环境挑战（如油水分离）的需求日益增长。基于纤维素的吸附剂为合成材料提供了一种环保替代品。然而，为了高效应用，必须增强其疏水性。在本研究中，使用硅烷化和烷基烯酮二聚体（AKD）技术对源自牛皮纸浆和半漂化学热机械浆（BCTMP）的纤维素基吸附剂进行疏水化处理。使用甲基三甲氧基硅烷（MTMOS）、正辛基三乙氧基硅烷（NTES）和N-(2-氨基乙基)-3-氨丙基三甲氧基硅烷（AATMS）成功赋予了疏水性，水接触角范围为120°至140°。吸水能力显著降低至1 g/g以下，而吸油能力仍然很高（19 - 28 g/g）。对于MTMOS和AATMS硅烷化样品，观察到水蒸气吸收的最大降幅为3 - 6%。这些结果证明了疏水化纤维素基吸附剂作为油水分离可持续替代品的潜力，有助于实现环境友好型水处理解决方案。
