Abstract
Hydrogel is a kind of three-dimensional network polymer formed by chemical bond or physical cross-linking. It is widely used in the field of biomaterial because of its good biocompatibility. In this experiment, a gel-based composite material for 3D bioprinting was prepared using hyaluronic acid-methyl cellulose (HAMC) gel as carrier and nano-hydroxyapatite/collagen (nHAC). The effects of gel formulation on gel process were analyzed by in vitro gel test, rheological analysis, in vitro degradation and scanning electron microscopy. The results showed that HAMC with different mineralized collagen concentration could be rapidly gelatinized at 37 °C within 3 min. The rheological experiments showed that the HAMC-mineralized collagen had shear thinning properties suitable for 3D bioprinting. The results showed that the degradation rate was similar in the first 10 days, but the degradation rate was slower with the increase of mineralized collagen concentration. The porous structure and high porosity of the hydrogel were observed by scanning electron microscopy (SEM). The porous structure of the cross-linked sample was better.
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Acknowledgements
This study is funded by University scientific research project-3D Printing mineralized collagen-based child mandible (Grant No. 20190116002/037), Students research-Medical X-ray imaging measurement tape prepared by screen printing (Grant No. 22150116005/074). High level crossing training plan of Beijing high school-Construction of small-caliber artificial blood vessels with cells.
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Yan, J. et al. (2018). Preparation of Hydrogel Material for 3D Bioprinting. In: Zhao, P., Ouyang, Y., Xu, M., Yang, L., Ren, Y. (eds) Applied Sciences in Graphic Communication and Packaging. Lecture Notes in Electrical Engineering, vol 477. Springer, Singapore. https://doi.org/10.1007/978-981-10-7629-9_116
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DOI: https://doi.org/10.1007/978-981-10-7629-9_116
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