Stoilova Olya, Manolova Nevena, Rashkov Iliya
Laboratory of Bioactive Polymers, Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev St., bl. 103A, 1113 Sofia, Bulgaria.
Polymers (Basel). 2021 Nov 13;13(22):3923. doi: 10.3390/polym13223923.
Electrospinning was successfully used for the one-step fabrication of poly(methyl methacrylate) (PMMA) fibers loaded with an inorganic photocatalyst-titanium oxide (TiO). By tuning the PMMA/TiO ratio and the electrospinning conditions (applied voltage, needle tip-to-collector distance, and flow rates), PMMA/TiO composites with selected organic/inorganic ratios, tailored designs, and targeted properties were obtained. The morphology of the electrospun composites was affected by the amount of TiO incorporated into the PMMA fibers. In addition, the inorganic photocatalyst had an impact on the wettability, thermal stability, and optical properties of the electrospun composites. In particular, the surface wettability of the composites was strongly influenced by UV light irradiation and from hydrophobic became superhydrophilic. Moreover, PMMA/TiO composites had enhanced tensile strength in comparison with those of bare PMMA mats. The electrospun PMMA/TiO composites showed excellent photocatalytic efficiency against the model organic pollutant-methylene blue-which is very promising for the future development of membranes that are highly efficacious for photocatalytic water treatment.
静电纺丝成功用于一步法制备负载有无机光催化剂二氧化钛（TiO₂）的聚甲基丙烯酸甲酯（PMMA）纤维。通过调节PMMA/TiO₂的比例以及静电纺丝条件（施加电压、针尖到收集器的距离和流速），获得了具有选定有机/无机比例、定制设计和目标性能的PMMA/TiO₂复合材料。静电纺丝复合材料的形态受掺入PMMA纤维中的TiO₂量的影响。此外，无机光催化剂对静电纺丝复合材料的润湿性、热稳定性和光学性能有影响。特别是，复合材料的表面润湿性受到紫外线照射的强烈影响，从疏水性变为超亲水性。此外，与纯PMMA垫相比，PMMA/TiO₂复合材料的拉伸强度有所提高。静电纺丝的PMMA/TiO₂复合材料对模型有机污染物亚甲基蓝显示出优异的光催化效率，这对于未来高效光催化水处理膜的发展非常有前景。
