Electrosprayed Polyvinylpyrrolidone (PVP) Submicron Particles Loaded by Green Tea Extracts

5th International Conference on Advanced Materials Sciences and Technology

Kamaruddin^1,2 ; Sriyanti, I.^1,2 ; Edikresnha, D.^1,2 ; Munir, M.M.^1,2 ; Khairurrijal, K.^1,2

Department of Physics, Faculty of Mathematics and Natural Sciences, Indonesia^1

Bioscience and Biotechnology Research Center, Institute for Research and Community Services, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung

40132, Indonesia^2

关键词: Composite particles;    Electrospraying;    FTIR;    Green tea extracts;    Polyvinyl pyrrolidone;    Precursor solutions;    Spherical morphologies;    Sub-micron particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/367/1/012036/pdf
DOI  :  10.1088/1757-899X/367/1/012036

来源: IOP

【 摘 要 】

Electrospraying technique has been successfully used to synthesize composite submicron particles of polyvinylpyrrolidone (PVP) and green tea extract (GTE). The precursor solutions were PVP in ethanol (15 wt%) and GTE in ethanol (10 wt%), which were then mixed at varying ratio. The mixed solution then underwent electrospraying process at an applied voltage of 15 kV, a distance of collector to the nozzle at 15 cm, and a flow rate of 3 μL/min. The composite submicron particles of PVP-GTE showed smooth and fine spherical morphology without fibers or beaded fibers. To a certain degree, the increase of GTE content in the PVP-GTE mixed solution decreased the average diameter of PVP-GTE composite particles. Moreover, the analysis of the FTIR spectra confirmed the existing molecular interaction between PVP and GTE in the composite submicron particles as shown by the shift of PVP wavenumber towards GTE, which has typically smaller wavenumber.