Departamento de Física, Universidade Federal do Amapá (UNIFAP), Amazonian Materials Group, Macapá, Amapá, Brazil.
Programa de Pós-graduação em Ciência e Engenharia de Materiais (PPGCEM), Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brazil.
Microsc Res Tech. 2022 Nov;85(11):3633-3641. doi: 10.1002/jemt.24216. Epub 2022 Aug 2.
Gelatin/PCL bilayered particles loaded with Piper nigrum essential oil was synthesized aiming to access their morphological and surface dynamic patterns. Atomic force microscopy (AFM) was applied to investigate the 3D morphology and multifractal aspects of the particles surface. The AFM maps revealed spherical surfaces and well dispersed particles, besides a rougher surface on the loaded system. Minkowski functionals showed that shape of the rough peaks was similar in the unloaded and loaded systems; however, the presence of deep valleys on the loaded particles revealed their rougher pattern. Multifractal analysis revealed that unloaded and loaded particles presented multifractal behavior with different surface dynamics. The loaded surface presented a greater width of the multifractal spectrum and smaller difference of fractal dimensions, confirming their more vertically growing. These results can be useful in the development of novel polymeric-based particles loaded with essential oil. Their unique surface dynamics can provide enhanced physical properties and performance in emerging biotechnological applications.
目的在于获取其形态和表面动态特征，合成负载胡椒素的明胶/PCL 双层颗粒。原子力显微镜（AFM）用于研究颗粒表面的 3D 形态和多重分形特征。AFM 图谱显示，负载体系的表面具有球形且分散良好的颗粒，同时呈现出更粗糙的形貌。Minkowski 函数表明，未负载和负载体系的粗糙峰的形状相似；然而，负载颗粒上存在较深的凹陷，表明其表面更为粗糙。多重分形分析表明，未负载和负载颗粒均表现出多重分形行为，具有不同的表面动力学特征。负载体系的多重分形谱更宽，分形维数差异更小，证实其更垂直生长。这些结果可用于开发负载精油的新型聚合物基颗粒。其独特的表面动力学可在新兴生物技术应用中提供增强的物理性能和表现。
