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. 2022 Jun 10;12:9654. doi: 10.1038/s41598-022-13572-9

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Schematic representation of the proposed mechanism of drug release from PVA-MNP cryogels. Top left: disc shaped gels with two edges, top right: spherical cap shaped gels with one edge. Polymer entanglement is less close to the edges of the gels as indicated by the lighter color and high towards the centers as indicated by the darker color. Bottom left and right: arrows depicting varying levels of drug release from disc and spherical cap gels. Larger arrows indicate higher drug release close to the edges and the smaller arrows indicate less release towards gel centers.