S.K. Pankaj¹, C. Bueno-Ferrer¹, N.N. Misra¹, L. O’Neill², A. Jiménez³, P. Bourke¹, P.J. Cullen^1,4,*

Journal of Renewable Materials, Vol.2, No.1, pp. 77-84, 2014, DOI:10.7569/JRM.2013.634129

Abstract The effects of dielectric barrier discharge plasma treatment on zein fi lm containing thymol as an active ingredient were evaluated. The plasma discharge was optically characterized to identify the reactive species. A signifi cant increase in the fi lm roughness (p < 0.05) was observed due to the etching effect of DBD plasma, which was correlated with the increase in the diffusion rate of thymol in the food simulant. The diffusion of thymol from the zein fi lm was measured in aqueous solution. The kinetics of thymol release followed the Fick’s law of diffusion as shown by the high correlation… More >

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

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, XRD, DSC and SEM. The… More > Graphic Abstract

S.K. Pankaj¹, C. Bueno-Ferrer¹, N.N. Misra¹, L. O’Neill², Paula Bourke¹, P.J. Cullen^3*

Journal of Renewable Materials, Vol.5, No.1, pp. 14-20, 2017, DOI:10.7569/JRM.2016.634105

Abstract This work aims to analyze the effects of cold atmospheric air plasma treatment of antimicrobial chitosan film with different levels of thymol. Optical characterization of the dielectric barrier discharge showed the generation of reactive nitrogen and oxygen species by the system. A significant increase (p < 0.05) in the surface roughness was observed after cold plasma treatment of the films. No significant difference (p > 0.05) was observed in the thermal profile of the plasma-treated films. A significant increase (p < 0.05) in the thymol diffusion coefficient was observed after the plasma treatment for all the active films. More >