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用于立体光刻 3D 打印的氨基甲酸乙酯二甲基丙烯酸酯基光聚合树脂:理化特性表征和生物相容性评价。

Urethane dimethacrylate-based photopolymerizable resins for stereolithography 3D printing: A physicochemical characterisation and biocompatibility evaluation.

机构信息

School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK.

Laboratory of Finished Dosage Forms, Faculty of Pharmacy, Riga Stradiņš University, 21 Konsula Street, Riga, 1007, Latvia.

出版信息

Drug Deliv Transl Res. 2024 Jan;14(1):177-190. doi: 10.1007/s13346-023-01391-y. Epub 2023 Jul 15.

Abstract

Vat photopolymerisation (VP) three-dimensional printing (3DP) has attracted great attention in many different fields, such as electronics, pharmaceuticals, biomedical devices and tissue engineering. Due to the low availability of biocompatible photocurable resins, its application in the healthcare sector is still limited. In this work, we formulate photocurable resins based on urethane dimethacrylate (UDMA) combined with three different difunctional methacrylic diluents named ethylene glycol dimethacrylate (EGDMA), di(ethylene glycol) dimethacrylate (DEGDMA) or tri(ethylene glycol) dimethacrylate (TEGDMA). The resins were tested for viscosity, thermal behaviour and printability. After printing, the 3D printed specimens were measured with a digital calliper in order to investigate their accuracy to the digital model and tested with FT-IR, TGA and DSC. Their mechanical properties, contact angle, water sorption and biocompatibility were also evaluated. The photopolymerizable formulations investigated in this work achieved promising properties so as to be suitable for tissue engineering and other biomedical applications.

摘要

光固化(VP)三维打印(3DP)在电子、制药、生物医学设备和组织工程等许多不同领域引起了极大的关注。由于生物相容性光固化树脂的可用性较低,其在医疗保健领域的应用仍然有限。在这项工作中,我们基于聚氨酯二甲基丙烯酸酯(UDMA)并结合三种不同的二官能甲基丙烯酸稀释剂(即乙二醇二甲基丙烯酸酯(EGDMA)、二乙二醇二甲基丙烯酸酯(DEGDMA)或三乙二醇二甲基丙烯酸酯(TEGDMA)来配制光固化树脂。对树脂的粘度、热行为和可打印性进行了测试。打印后,用数字卡尺对 3D 打印的标本进行测量,以研究其对数字模型的准确性,并通过 FT-IR、TGA 和 DSC 进行测试。还评估了它们的机械性能、接触角、吸水率和生物相容性。本工作中研究的光聚合配方具有良好的性能,适用于组织工程和其他生物医学应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f818/10746761/79a6f1e06c1d/13346_2023_1391_Fig1_HTML.jpg

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