Synthesis of Polyvinylpyrrolidone (PVP)-Green Tea Extract Composite Nanostructures using Electrohydrodynamic Spraying Technique

Kamaruddin, Kamaruddin and Edikresnha, Dhewa and Sriyanti, Ida and Munir, Muhammad Miftahul and Khairurrijal, Khairurrijal (2017) Synthesis of Polyvinylpyrrolidone (PVP)-Green Tea Extract Composite Nanostructures using Electrohydrodynamic Spraying Technique. IOP Conference Series: Materials Science and Engineering, 202 (012043). pp. 1-8. ISSN 1757-899X

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Abstract

Green Tea Extract (GTE) as an active substance has successfully loaded to PVP nanostructures using electrohydrodynamic spraying technique. The precursor solution was the mixture of ethanolic polyvinylpyrrolidone (PVP) with a molecular weight of 1,300 kg/mol and ethanolic GTE solutions at a weight concentration of 4 wt.% and 2 wt.%, respectively, and it was estimated that the entanglement number was 2. The electrospraying was conducted at the voltage of 15 kV, the flow rate of 10 µL/min., and the distance between the collector and the tip of the nozzle of 10 cm. The SEM images showed that the PVP/GTE nanostructures had a combination of agglomerated beads (less spherical particles) and nanofibers. This occurred because if the PVP concentration is low, the PVP/GTE composite has weak core structures that cause the shell to be easily agglomerated each other. The intermolecular interaction between PVP and GTE in the PVP/GTE nanostructures occurred as confirmed by the peak at 3396 cm-1, which is the carboxyl group, proving that the PVP/GTE nanostructures contained water, alcohols, and phenols. The peak at 1040 cm-1, which is the stretching of C-O group in amino acid, gave another proof to the intermolecular interaction

Item Type: Article
Subjects: L Education > L Education (General) > L7-991 Education (General)
Q Science > QC Physics > QC1-999 Physics
Divisions: 06-Faculty of Education and Educational Science > 84103-Physics Education (S2)
Depositing User: Dr Ida Sriyanti, M.Si
Date Deposited: 01 Mar 2021 03:44
Last Modified: 01 Mar 2021 03:44
URI: http://repository.unsri.ac.id/id/eprint/39886

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