Ol'khov A A, Tyubaeva P M, Zernova Yu N, Kurnosov A S, Karpova S G, Iordanskii A L
Plekhanov Russian University of Economics, 117997 Moscow, Russia.
Semenov Institute of Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russia.
Russ J Gen Chem. 2021;91(3):546-553. doi: 10.1134/S1070363221030245. Epub 2021 Apr 18.
Ultrathin fibrous materials based on natural bacterial polymer polyhydroxybutyrate (PHB) were prepared by the electrospinning method. Using scanning electron and optical microscopy techniques the macrophysical characteristics of the fibrous layer were determined and classified. The physicomechanical characteristics of the resultant materials and their changes caused by ozonation were determined as well. Structure formation in the ultrathin polyhydroxybutyrate fibers containing low antibacterial concentrations was studied. The effect of low concentrations of zinc tetraphenylporphyrin and iron(III) chloroteteraphenylporphyrin complexes on the structure of polyhydroxybutyrate-based ultrathin fibers was elucidated. Techniques used in the study were X-ray diffraction analysis, ESR spin probe method, differential scanning calorimetry, and optical and electron scanning microscopy. It was shown that addition of the metal porphyrin complexes caused changes in the degree of crystallinity and in the crystallite size of the PHB fibers, while the proportion of dense domains in the amorphous phase of the polymer fiber increased.
通过静电纺丝法制备了基于天然细菌聚合物聚羟基丁酸酯（PHB）的超薄纤维材料。利用扫描电子显微镜和光学显微镜技术对纤维层的宏观物理特性进行了测定和分类。还测定了所得材料的物理力学特性以及臭氧化引起的变化。研究了含低抗菌浓度的超薄聚羟基丁酸酯纤维中的结构形成。阐明了低浓度四苯基卟啉锌和四苯基卟啉铁（III）配合物对聚羟基丁酸酯基超薄纤维结构的影响。该研究中使用的技术包括X射线衍射分析、电子自旋共振自旋探针法、差示扫描量热法以及光学和电子扫描显微镜。结果表明，金属卟啉配合物的添加导致PHB纤维的结晶度和微晶尺寸发生变化，而聚合物纤维非晶相中的致密区域比例增加。
