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Lv T, Li J, Huang S, Wen H, Li H, Chen J, Jiang S. Synergistic effects of chain dynamics and enantiomeric interaction on the crystallization in PDLA/PLLA mixtures. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123648] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ren H, Lian X, Niu B, Zhao L, Zhang Q, Huang D, Wei Y, Li Z, He Z, Qiu Z. The study of mechanical and drug release properties of the mineralized collagen/polylactic acid scaffold by tuning the crystalline structure of polylactic acid. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:749-762. [PMID: 33357084 DOI: 10.1080/09205063.2020.1866270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Open bone fractures in clinical are not only difficult to heal but also at a high risk of infections. Annual cases of fractures which result from osteoporosis amount to approximately 9 million. The objective of this study is to load the antibiotic drug of vancomycin and tune its controlled delivery on a bone repair scaffold material of Mineralized Collagen/poly(lactic acid) (MCP) via changing the crystallinity of poly(lactic acid) to achieve inhibiting infection while repairing defects. We explored the crystallization process of the material during molding and prepared non-crystalline MCP1, MCP2, MCP3 and MCP4 by rapid freeze forming and crystalline MCP5 by tuning temperature decreasing rate. This method can control the micropore structure of the material; and the material changes from brittleness to toughness, which greatly enhances the control of mechanical properties. The drug release behavior of the material was studied for 28 days. Furthermore, the antibacterial property of the material was tested by the zone of inhibition, which shows the material good bacteriostasis. The controllable MCPs are expected to be substitutes for the treatment of infectious bone defects applying to clinical practical treatment.
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Affiliation(s)
- HuaJie Ren
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China
| | - Xiaojie Lian
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China.,Shanxi Key Laboratory of Material Strength & Structural Impact, Instisute of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China
| | - Baolong Niu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, China
| | - Liqin Zhao
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China.,Shanxi Key Laboratory of Material Strength & Structural Impact, Instisute of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China
| | - Quanyou Zhang
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China.,Shanxi Key Laboratory of Material Strength & Structural Impact, Instisute of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China
| | - Di Huang
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China.,Shanxi Key Laboratory of Material Strength & Structural Impact, Instisute of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China
| | - Yan Wei
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China.,Shanxi Key Laboratory of Material Strength & Structural Impact, Instisute of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, China
| | - Zhijun Li
- Beijing Allgens Medical Science and Technology Co., Ltd, Beijing, China
| | - Zhimin He
- Beijing Allgens Medical Science and Technology Co., Ltd, Beijing, China
| | - Zhiye Qiu
- Beijing Allgens Medical Science and Technology Co., Ltd, Beijing, China
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