Macromol, Volume 1, Issue 1 (March 2021) – 4 articles

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Open AccessArticle
Polyethylene Oxide Hydrogels Crosslinked by Peroxide for the Controlled Release of Proteins
Macromol 2021, 1(1), 37-48; https://0-doi-org.brum.beds.ac.uk/10.3390/macromol1010004 - 22 Dec 2020
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Abstract
Crosslinking of polyethylene oxide (PEO) using a peroxide in the melt is employed to synthesize soft hydrogels with the ability of controlled release of proteins. The viscoelastic properties of the swollen networks confirm the elastic nature of the synthesized material and they are [...] Read more.
Crosslinking of polyethylene oxide (PEO) using a peroxide in the melt is employed to synthesize soft hydrogels with the ability of controlled release of proteins. The viscoelastic properties of the swollen networks confirm the elastic nature of the synthesized material and they are in agreement with swelling characteristics. The hydrogels have mesh sizes at the nm scale as it is estimated by swelling measurements and measured by small angle neutron scattering (SANS). Diffusion of bovine serum albumin (BSA) and lysozyme (LYZ) out of the hydrogels is restricted by the presence of the network. The diffusion coefficient in the hydrogels is lower for BSA in comparison to LYZ, while in both cases it drops as the mesh size of the network becomes smaller. This study introduces the use of peroxide-crosslinked PEO networks in the investigation of protein transport within hydrogels, the development of hydrogel-based protein delivery patches and polymeric constructs. Full article
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Open AccessReview
A Brief Overview on Preparation of Self-Healing Polymers and Coatings via Hydrogen Bonding Interactions
Macromol 2021, 1(1), 18-36; https://0-doi-org.brum.beds.ac.uk/10.3390/macromol1010003 - 22 Dec 2020
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Abstract
Self-healing coatings or materials have received significant importance in paint, coating, and other industries, as well as in academia, because of their capability to extend materials service life, improving protection, and ensuring sustainability. This review article emphasizes significant advances accomplished in the preparation [...] Read more.
Self-healing coatings or materials have received significant importance in paint, coating, and other industries, as well as in academia, because of their capability to extend materials service life, improving protection, and ensuring sustainability. This review article emphasizes significant advances accomplished in the preparation and properties of intrinsic self-healing materials exclusively based on hydrogen bonding interactions, with possible applications in coatings and adhesives. The main topic of discussion in this review article is the preparation, healing conditions, healing efficiency, and mechanical property recovery after healing. The last part of the review discusses the conclusions and outlook of self-healing materials. Full article
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Open AccessReview
Neat Linear Polysiloxane-Based Ionic Polymers: Insights into Structure-Based Property Modifications and Applications
Macromol 2021, 1(1), 2-17; https://0-doi-org.brum.beds.ac.uk/10.3390/macromol1010002 - 21 Dec 2020
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Abstract
A diverse range of linear polysiloxane-based ionic polymers that are hydrophobic and highly flexible can be obtained by substituting the polymers with varying amounts of ionic centers. The materials can be highly crystalline solids, amorphous soft solids, poly(ionic) liquids or viscous polymer liquids. [...] Read more.
A diverse range of linear polysiloxane-based ionic polymers that are hydrophobic and highly flexible can be obtained by substituting the polymers with varying amounts of ionic centers. The materials can be highly crystalline solids, amorphous soft solids, poly(ionic) liquids or viscous polymer liquids. A key to understanding how structural variations can lead to these different materials is the establishment of correlations between the physical (dynamic and static) properties and the structures of the polymers at different distance scales. This short review provides such correlations by examining the influence of structural properties (such as molecular weights, ion pair contents, and ion types) on key bulk properties of the materials. Full article
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Open AccessEditorial
Macromol—A Journal of Macromolecular Research —Open Access Journal
Macromol 2021, 1(1), 1; https://0-doi-org.brum.beds.ac.uk/10.3390/macromol1010001 - 17 Sep 2020
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Abstract
Macromol—A Journal of Macromolecular Research is a new interdisciplinary, open access peer-reviewed scientific journal on macromolecular science, published quarterly online by MDPI [...] Full article
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