Xiaojuan He¹, Chanyuan Li¹, Shaokang Wang¹, Jingyi Zhu¹, Yabin Zhang^1,*, Zhen Guo², Lihua Wu^3,*

Journal of Polymer Materials, Vol.41, No.4, pp. 263-279, 2024, DOI:10.32604/jpm.2024.055821 - 16 December 2024

Abstract Eye drops are the usual method to treat eye diseases, and gel polymer provides the carrier which could be used for ophthalmic drug delivery. However, the stable and sustained release is the main issue for the ophthalmic drug and is concerned by many researchers. In this study, composite hydrogels were prepared using 2-hydroxyethyl methacrylate (HEMA), and N-vinyl-2-pyrrolidone (NVP) used for ophthalmic drug loading and release. According to the results of Fourier transform infrared spectroscopy (FTIR), the disappearance of the C=C bond in hydrogel indicated that the copolymerization reaction between HEMA and NVP was successful. The… More > Graphic Abstract

Huimin Huang¹, Zijun Wu², Zhijian Zhou¹, Qiulin Xu¹, Jie Yan^1,*, Qiaoguang Li^1,*

Journal of Renewable Materials, Vol.11, No.1, pp. 257-272, 2023, DOI:10.32604/jrm.2023.021073 - 10 August 2022

Abstract The low utilization rate of pesticides makes the migration of pesticides in water and soil, which brings great harm to the ecosystem. The development of pesticide carriers with good drug loading capacity and release control ability is an effective method to realize effective utilization of pesticides and reduce pesticide losses. In this work, fosthiazate-stearic acid/expanded perlite sustained-release particles were successfully prepared by vacuum impregnation using expanded perlite (EP) as carrier, fosthiazate (FOS) as model pesticide and stearic acid (SA) as hydrophobic matrix. The structure and morphology of the samples were studied by BET, FT-IR, TGA,… More > Graphic Abstract

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

Journal of Renewable Materials, Vol.9, No.10, pp. 1673-1684, 2021, DOI:10.32604/jrm.2021.014695 - 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 More >