Dudek Gabriela, Turczyn Roman
Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology Strzody 9 44-100 Gliwice Poland
RSC Adv. 2018 Nov 27;8(69):39567-39578. doi: 10.1039/c8ra07868h. eCollection 2018 Nov 23.
A new type of composite alginate membranes filled with chitosan (CS) and three different modified chitosan submicron particles, phosphorylated (CS-P), glycidol (CS-G) or glutaraldehyde (CS-GA) crosslinked ones, were prepared, and the pervaporation of water/ethanol mixture was investigated. The influence of various chitosan particles and their content on the transport properties of membranes was discussed. It was found that the addition of chitosan particles into the alginate matrix has a prominent effect on the ethanol/water separation efficiency. All tested membranes are characterized simultaneously by a high flux and selectivity, exhibiting advantageous properties, and outperforming numerous conventional materials. The best results were achieved for alginate membranes filled with phosphorylated chitosan particles at 10 wt%, for which separation factor, flux and PSI were equal to 136.2, 1.90 kg m h and 256.9 kg m h, respectively.
制备了一种新型的复合藻酸盐膜，其中填充了壳聚糖（CS）以及三种不同的改性壳聚糖亚微米颗粒，即磷酸化（CS-P）、缩水甘油（CS-G）或戊二醛（CS-GA）交联的颗粒，并研究了水/乙醇混合物的渗透蒸发性能。讨论了各种壳聚糖颗粒及其含量对膜传输性能的影响。研究发现，向藻酸盐基质中添加壳聚糖颗粒对乙醇/水分离效率有显著影响。所有测试的膜均同时具有高通量和高选择性，表现出优异的性能，优于许多传统材料。对于填充10 wt%磷酸化壳聚糖颗粒的藻酸盐膜，分离因子、通量和PSI分别达到136.2、1.90 kg m h和256.9 kg m h，取得了最佳结果。
