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dc.contributor.authorChen, Yuanyuan
dc.contributor.authorMurphy, Alan
dc.contributor.authorScholz, Dimitri
dc.contributor.authorGeever, Luke M.
dc.contributor.authorLyons, John G.
dc.contributor.authorDevine, Declan M.
dc.date.accessioned2019-05-20T10:34:52Z
dc.date.available2019-05-20T10:34:52Z
dc.date.copyright2018
dc.date.issued2019-08
dc.identifier.citationChen, Y., Murphy, A., Scholz, D., Geever, L. M., Lyons, J. G., Devine, D. M. Surface modified halloysite nanotubes reinforced polylactic acid for use in biodegradable coronary stents. Journal of Applied Polymer Science. v.135 (30), 46521. doi.org/10.1002/app.46521en_US
dc.identifier.issn0021-8995
dc.identifier.otherMaterials Research Institute AIT - Articlesen_US
dc.identifier.urihttps://research.thea.ie/handle/20.500.12065/2705
dc.description.abstractPoly(lactic acid) (PLA) was reinforced halloysite nanotubes (HNTs) in this study. To improve dispersion and interfacial adhesion of HNTs within the PLA matrix, HNTs were surface modified with 3‐aminopropyltriethoxysilane (ASP) prior to compounding with PLA. PLA/ASP‐HNTs nanocomposites were characterized by differential scanning calorimetry (DSC), Fourier transfer infrared spectroscopy (FTIR), surface wettability, thermogravimetric analysis, transmission electron microscopy (TEM), and tensile testing. The hemocompatibility and cytocompatibility of PLA and PLA composites were investigated and the in vitro degradation process of PLA/ASP‐HNTs composites was investigated for a period of 6 months by gel permeation chromatography, FTIR, weight loss measurement, DSC, and tensile testing. PLA and all PLA composites were blood compatibile and non‐cytotoxic. TEM analysis revealed that HNTs agglomeration in PLA matrix was reduced by surface treatment with ASP. ASP‐HNTs had better reinforcing effect than unmodified HNTs evidenced by tensile testing. ASP‐HNTs appeared to increase the hydrolytic degradation process as measured by weight measurement. PLA/ASP‐HNTs composites displayed 12.1% weight loss and 30.6% average molecular weight reduction while retaining 74% of Young's modulus by the 24th week of degradation. Based on this data, the reinforcement of PLA using ASP‐HNTs may prove beneficial for applications such as biodegradable stentsen_US
dc.formatPDFen_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofJournal of Applied Polymer Scienceen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/ie/*
dc.subjectPolylactic aciden_US
dc.subjectNanocompositesen_US
dc.subjectNanotubesen_US
dc.titleSurface modified halloysite nanotubes reinforced polylactic acid for use in biodegradable coronary stents.en_US
dc.typeArticleen_US
dc.description.peerreviewyesen_US
dc.identifier.doidoi.org/10.1002/app.46521
dc.identifier.orcidhttps://orcid.org/0000-0002-1364-5583
dc.rights.accessOpen Accessen_US
dc.subject.departmentMaterials Research Institute AITen_US


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