Open Access

ARTICLE

Preparation and Characterization of Potassium Monopersulfate/Ethyl Cellulose Microcapsules and Their Sustained Release Performance

by Qiaoguang Li¹, Xuming Yan¹, Jialong Chen¹, Xugang Shu^1,*, Puyou Jia^2,*, Xiangjun Liang³

1 School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
2 Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing, 210042, China
3 Guangzhou Ansai Chemical Industry Co., Ltd., Guangzhou, 510225, China

* Corresponding Authors: Xugang Shu. Email: ; Puyou Jia. Email:

Journal of Renewable Materials 2021, 9(10), 1673-1684. https://doi.org/10.32604/jrm.2021.014695

Received 20 October 2020; Accepted 03 December 2020; Issue published 12 May 2021

Abstract

Environmental cleaning is an important aspect of bacteria control. Ethyl cellulose microcapsules containing potassium monopersulfate (PMCM) were prepared by emulsified solvent diffusion method. The chemical structure and microstructure of the obtained PMCM was characterized by methods of Fourier transform infrared spectroscopy (FT-IR), optical microscopy, scanning electron microscopy and X-ACT energy dispersive X-ray spectroscopy. The SEM micrographs of the PMCM containing 21.6% of C, 46.8% of O, 10.7% of S and 19.4% of K was relatively smooth. Thermal stability, sustained release performance, and antimicrobial activity of PMCM were investigated. The results showed that the drug loading and encapsulation efficiency of PMCM were 30.3% and 42.6% respectively. Potassium monopersulfate was fully released after 8 h, following a Fickian diffusion mechanism. Results showed that the microcapsules prepared with a high concentration of potassium monopersulfate solution showed a good antimicrobial effect. The microcapsule wall of the resulting PMCM increased with increasing ethyl cellulose content and had high thermal stability from the data of 69% residue rate. The excellent thermal stability and high sustained release performance of PMCM showed high application value.

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Keywords

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