期刊
TALANTA
卷 211, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.talanta.2020.120750
关键词
3D printing; Electrohydrodynamic jet; Thermal field; Composite scaffold; Synthetic biopolymers; Cell culture
资金
- National Key R&D Program of China [2018YFA0703200]
- National Natural Science Foundation of China [51975104]
- Aerospace Science Foundation [2018ZD63004]
- Fundamental Research Funds for the Central Universities [DUT18LAB17]
- State Key Laboratory of Precision Measuring Technology and Instruments (Tianjin University) [pilab1804]
- Collaborative Innovation Center of Major Machine Manufacturing in Liaoning
Controlled printing of biodegradable and bioresorbable polymers at desired 3D scaffold is of great importance for cell growth and tissue regeneration. In this work, a novel electrohydrodynamic jet 3D printing technology with the resultant effect of electrohydrodynamic force and thermal convection was developed, and its feasibility to fabricate controllable filament composite scaffolds was verified. This method introduces an effective thermal field under the needle to simultaneously enhance the ink viscosity, jetting morphology controllability and printing structure solidify. The fabrication mechanisms of thermal convection on jetting morphology and printed structures feature were investigated through theoretical analysis and experimental characterization. Under optimized conditions, a stable and finer jet was formed; then with the use of this jet, various 3D structures were directly printed at a high aspect ratio similar to 30. Furthermore, the PCL/PVP composite scaffolds with the controllable filament diameter (similar to 10 mu m) which is closed to living cells were printed. Cell culture experiments showed that the printed scaffolds had excellent cell biocompatibility and facilitated cellular proliferation in vitro. It is a great potential that the developed electrohydrodynamic jet 3D printing technology might provide a novel approach to directly print composite synthetic biopolymers into flexibly scale structures for tissue engineering applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据