3D-printing of oxidized starch-based hydrogels with superior hydration properties. (15th September 2022)

• Record Type: Journal Article
• Authors: Qiu, Zhipeng; Zheng, Bo; Xu, Jinchuan; Chen, Jin; Chen, Ling
• Is Part Of: Carbohydrate polymers. Volume 292(2022)
• Publication Date: 2022-09-15
• Subjects: OMS oxidized maize starch -- 3D-OMS 3D printing-oxidized maize starch -- HE-3DP hot-extrusion 3D printing -- NMS native maize starch -- TEMPO 2, 2, 6, 6-Tetramethyl-1-piperinedinyloxy -- FT-IR fourier transform infrared -- DSR dynamic shear rheological -- SAXS small angle X-ray scattering -- SEM scanning electron microscopy -- ESEM environmental scanning electron microscope -- LF-NMR low-field nuclear magnetic resonance -- CLSM confocal laser scanning microscopy; Starch hydrogels -- Hot-extrusion 3D printing -- Gel network structure -- Hydration properties -- Printability; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2022.119686
• Languages: English
• ISSNs: 0144-8617

Abstract

Abstract: High-hydration hydrogels based on carbohydrate polymers and green preparation methods have attracted intensive research focus recently. Driven by the attractive functions of starch, oxidized maize starch (OMS) was chosen and the related hydrogel (3D-OMS) was constructed by hot-extrusion 3D printing (HE-3DP). Meanwhile, the effect of different OMS concentrations (11 %–19 %) on its printability, structure and hydration properties were systematically investigated. The results showed that the formation of porous structure during HE-3DP environment contributed to rapid water absorption and well water holding capacity of 3D-OMS. Interestingly, as the OMS concentration increased from 11 % to 19 %, the 3D-OMS presented great hydration properties, with its maximum water absorption capacity and water holding capacity reaching 3013.43 % (11-OMS) and 93.53 % (19-OMS), respectively. Among them, 13 % was the best concentration for HE-3DP. Besides, 3D-OMS also exhibited good biodegradability and cytocompatibility. These results demonstrated potential for developing new starch-based biomedical hydrogel with great hydration properties through HE-3DP technology. Graphical abstract: Unlabelled Image