A high-performance GelMA–GelMA homogeneous double-network hydrogel assisted by 3D printing. Issue 20 (26th April 2022)

• Record Type: Journal Article
• Authors: Dong, Yipeng; Zhang, Mingshan; Han, Daobo; Deng, Zhichao; Cao, Xuewei; Tian, Jianguo; Ye, Qing
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 20(2022)
• Page Start: 3906
• Page End: 3915
• Publication Date: 2022-04-26
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Biomedical materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2tb00330a
• Languages: English
• ISSNs: 2050-750X

Abstract

Abstract : A GelMA–GelMA (G–G) homogeneous double-network hydrogel was constructed assisted by DLP 3D printing to obtain excellent performance especially mechanical properties. Abstract : Gelatin methacryloyl (GelMA) is a popular photocrosslinkable hydrogel that has been widely utilized in tissue engineering and regenerative medicine fields due to its excellent biocompatibility, biodegradability and cell response. However, the lack of mechanical properties limits its application. In the present study, a method for the preparation of a GelMA–GelMA (G–G) homogeneous double-network (DN) hydrogel to improve mechanical strength based on DLP 3D printing is proposed. The G–G DN hydrogel was fabricated and characterized in terms of microstructure, mechanical properties and rheological behavior. By modifying the degree of substitution (DS), the polymer concentration of double network crosslinking and the soak time, the novel G–G DN hydrogel could significantly improve the properties of strength, self-recovery and fatigue resistance. After all, the novel porous composite hydrogel (G–G DN hydrogel) could achieve more than twice that of the pure GelMA hydrogel, better fatigue resistance and printable ability. Therefore, it can be a potential choice of applications attracting great attention for its mechanical properties, great transmittance and biocompatibility.