Macieja Szymon, Piegat Agnieszka, Mizielińska Małgorzata, Stefaniak Nina, El Fray Mirosława, Bartkowiak Artur, Zdanowicz Magdalena
Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Al. Piastow 45, 71-311 Szczecin, Poland.
Molecules. 2025 Mar 20;30(6):1387. doi: 10.3390/molecules30061387.
Biofilm-forming microorganisms pose a severe threat in the food and medical industries, among others. In this paper, the research materials were poly(butylene succinate-dilinoleic succinate) (PBS-DLS) copolymers with variable hard and soft segment weight ratios (90:10, 70:30, and 50:50). Polymeric films were prepared by the solvent casting method. Selected physicochemical properties and the tendency to form biofilm on the polymer surface were investigated. As the amount of DLS soft segments in the polymer matrix increased, changes in the FTIR-ATR spectra (signal intensity), surface (SEM), and phase transition (DSC) were observed. The higher the content of the DLS segment, the lower the transition temperatures and the smoother the film's surface. These factors resulted in a significant reduction in the amount of biofilm formed on the material's surface and a decrease in the metabolic activity of microorganisms present in the biofilm and SEM micrographs. The obtained PBS-DLS films have great potential in the food and medical packaging industries.
形成生物膜的微生物在食品和医疗行业等领域构成了严重威胁。在本文中，研究材料是具有不同软硬段重量比（90:10、70:30和50:50）的聚（丁二酸丁二醇酯-二亚油酸丁二酸酯）（PBS-DLS）共聚物。通过溶液浇铸法制备聚合物薄膜。研究了所选的物理化学性质以及在聚合物表面形成生物膜的倾向。随着聚合物基体中DLS软段含量的增加，观察到傅里叶变换红外衰减全反射光谱（FTIR-ATR）（信号强度）、表面（扫描电子显微镜，SEM）和相变（差示扫描量热法，DSC）的变化。DLS段的含量越高，转变温度越低，薄膜表面越光滑。这些因素导致材料表面形成的生物膜量显著减少，生物膜中存在的微生物的代谢活性降低，以及SEM微观图像的变化。所获得的PBS-DLS薄膜在食品和医疗包装行业具有巨大潜力。
