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DLP 3D Printing Meets Lignocellulosic Biopolymers: Carboxymethyl Cellulose Inks for 3D Biocompatible Hydrogels

机译:DLP 3D印刷符合木质纤维素生物聚合物:用于3D生物相容性水凝胶的羧甲基纤维素墨水

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摘要

The development of new bio-based inks is a stringent request for the expansion of additive manufacturing towards the development of 3D-printed biocompatible hydrogels. Herein, methacrylated carboxymethyl cellulose (M-CMC) is investigated as a bio-based photocurable ink for digital light processing (DLP) 3D printing. CMC is chemically modified using methacrylic anhydride. Successful methacrylation is confirmed by H NMR and FTIR spectroscopy. Aqueous formulations based on M-CMC/lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) photoinitiator and M-CMC/Dulbecco’s Modified Eagle Medium (DMEM)/LAP show high photoreactivity upon UV irradiation as confirmed by photorheology and FTIR. The same formulations can be easily 3D-printed through a DLP apparatus to produce 3D shaped hydrogels with excellent swelling ability and mechanical properties. Envisaging the application of the hydrogels in the biomedical field, cytotoxicity is also evaluated. The light-induced printing of cellulose-based hydrogels represents a significant step forward in the production of new DLP inks suitable for biomedical applications.
机译:新的生物基础墨水的发展是一种严格的要求扩展添加剂制造业朝向3D印刷的生物相容性水凝胶的发展。本文中,研究了甲基丙烯酸甲基甲基纤维素(M-CMC)作为用于数字光处理(DLP)3D印刷的生物基光管状墨水。使用甲基丙烯酸酐化学改性CMC。通过H NMR和FTIR光谱证实成功的甲基丙烯酸酯。基于M-CMC /磷酸锂-2,4,6-三甲基苯甲酰磷酸酯和M-CMC / DULBECCO改性鹰培养基(DMEM)/ LAP的水性制剂在紫外线辐射时显示出高光反应性,如光射线和FTIR所证实。通过DLP设备可以容易地进行相同的配方,以产生具有优异膨胀能力和机械性能的3D形水凝胶。设想水凝胶在生物医学场中的应用,还评估细胞毒性。光诱导的基于纤维素的水凝胶印刷代表了适用于生物医学应用的新型DLP油墨的前进的重要步骤。

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