Amusa Abiodun Abdulhameed, Ahmad Abdul Latif, Jimoh Adewole Kayode
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, Malaysia.
Process Engineering Department, International Maritime College, Sohar 322, Oman.
Membranes (Basel). 2021 Mar 13;11(3):202. doi: 10.3390/membranes11030202.
Delignified lignocellulosic biomass was functionalized with amine groups. Then, the pretreated lignin-free date pits cellulose and the amine-functionalized-date pits cellulose (0-5 wt%) were incorporated into a polysulfone polymer matrix to fabricate composite membranes. The amine groups give additional hydrogen bonding to those existing from the hydroxyl groups in the date pits cellulose. The approach gives an efficient avenue to enhance the CO molecules' transport pathways through the membrane matrix. The interactions between phases were investigated via Fourier transformed infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), whereas pure gases (CO and N) were used to evaluate the gas separation performances. Additionally, the thermal and mechanical properties of the fabricated composites were tested. The pure polysulfone membrane achieved an optimum separation performance at 4 Bar. The optimum separation performance for the composite membranes is achieved at 2 wt%. About 32% and 33% increments of the ideal CO/N selectivity is achieved for the lignin-free date pits cellulose composite membrane and the amine-functionalized-date pits cellulose composite membrane, respectively.
脱木质素的木质纤维素生物质用胺基进行了功能化处理。然后，将预处理后的无木质素枣核纤维素和胺功能化枣核纤维素（0 - 5 wt%）掺入聚砜聚合物基质中以制备复合膜。胺基与枣核纤维素中羟基现有的氢键形成额外的氢键。该方法为增强CO分子通过膜基质的传输途径提供了一条有效途径。通过傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）研究了各相之间的相互作用，同时使用纯气体（CO和N₂）来评估气体分离性能。此外，还测试了所制备复合材料的热性能和机械性能。纯聚砜膜在4巴时实现了最佳分离性能。复合膜在2 wt%时实现了最佳分离性能。无木质素枣核纤维素复合膜和胺功能化枣核纤维素复合膜的理想CO/N₂选择性分别提高了约32%和33%。
