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Mater."],"published-print":{"date-parts":[[2024,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Melt electrowriting (MEW) is an additive manufacturing technique that harnesses electro-hydrodynamic phenomena to produce 3D-printed fibres with diameters on the scale of 10s of microns. The ability to print at this small scale provides opportunities to create structures with incredibly fine resolution and highly defined morphology. The current gold standard material for MEW is poly(\u03f5-caprolactone) (PCL), a polymer with excellent biocompatibility but lacking in chemical groups that can allow intrinsic additional functionality. To provide this functionality while maintaining PCL\u2019s positive attributes, blending was performed with a Poly(Ethylene Glycol) (PEG)-based Acrylate endcapped Urethane-based Precursor (AUP). AUPs are a group of polymers, built on a backbone of existing polymers, which introduce additional functionality by the addition of one or more acrylate groups that terminate the polymer chain of a backbone polymer. By blending with a 20kDa AUP-PEG in small amounts, it is shown that MEW attributes are preserved, producing high-quality meshes. Blends were produced in various PCL:AUP weight ratios (100:0, 90:10 and 0:100) and processed into both solvent-cast films and MEW meshes that were used to characterise the properties of the blends. It was found that the addition of AUP-PEG to PCL significantly increases the hydrophilicity of structures produced with these polymers, and adds swelling capability compared to the non-swelling PCL. The developed blend (90:10) is shown to be processable using MEW, and the quality of manufactured scaffolds is evaluated against pure PCL scaffolds by performing scanning electron microscopy image analysis, with the quality of the novel MEW blend scaffolds showing comparable quality to that of pure PCL. The presence of the functionalisable AUP material on the surface of the developed scaffolds is also confirmed using fluorescence labelling of the acrylate groups. Biocompatibility of the MEW-processable blend was confirmed through a cell viability study, which found a high degree of cytocompatibility.<\/jats:p>","DOI":"10.1088\/1748-605x\/ad5b41","type":"journal-article","created":{"date-parts":[[2024,6,24]],"date-time":"2024-06-24T22:42:15Z","timestamp":1719268935000},"page":"055011","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Melt electrowriting of poly(\u03f5-caprolactone)\u2014poly(ethylene glycol) backbone polymer blend scaffolds with improved hydrophilicity and functionality"],"prefix":"10.1088","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-7640-9143","authenticated-orcid":false,"given":"Conor","family":"Darroch","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8098-318X","authenticated-orcid":false,"given":"Francesco","family":"Digeronimo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-6248-123X","authenticated-orcid":false,"given":"Giuseppe","family":"Asaro","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7471-1970","authenticated-orcid":true,"given":"Manon","family":"Minsart","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3208-8890","authenticated-orcid":true,"given":"Nele","family":"Pien","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7688-1682","authenticated-orcid":true,"given":"Sandra","family":"van Vlierberghe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5530-4998","authenticated-orcid":true,"given":"Michael G","family":"Monaghan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2024,7,9]]},"reference":[{"key":"bmmad5b41bib1","article-title":"Tissue engineering: proceedings of a workshop held at Granlibakken, Lake Tahoe","author":"Skalak","year":"1988"},{"key":"bmmad5b41bib2","doi-asserted-by":"publisher","first-page":"920","DOI":"10.1126\/science.8493529","article-title":"Tissue engineering","volume":"260","author":"Langer","year":"1993","journal-title":"Science"},{"key":"bmmad5b41bib3","doi-asserted-by":"publisher","first-page":"647","DOI":"10.1007\/978-3-030-34471-9_23","author":"Shimojo","year":"2020"},{"key":"bmmad5b41bib4","doi-asserted-by":"publisher","first-page":"159","DOI":"10.1515\/bnm-2015-0022","article-title":"Fibre pulsing during melt electrospinning writing","volume":"17","author":"Hochleitner","year":"2016","journal-title":"BioNanoMaterials"},{"key":"bmmad5b41bib5","doi-asserted-by":"publisher","first-page":"203","DOI":"10.1002\/1097-4636(200105)55:2<203::AID-JBM1007>3.0.CO;2-7","article-title":"Mechanical properties and cell cultural response of polycaprolactone scaffolds designed and fabricated via fused deposition modeling","volume":"55","author":"Hutmacher","year":"2001","journal-title":"J. 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