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Zhang Y, Wang X, Li K, Zhang Y, Yu X, Wang H, Wu X, Shi Z, Liu L, Zheng W, Cui Z, Xu Y, Li Q. Nanofibrous tissue engineering scaffold with nonlinear elasticity created by controlled curvature and porosity. J Mech Behav Biomed Mater 2021; 126:105039. [PMID: 34923367 DOI: 10.1016/j.jmbbm.2021.105039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 11/29/2021] [Accepted: 12/08/2021] [Indexed: 11/27/2022]
Abstract
Micro-crimped fibers have been widely used in the field of tissue repair to mimic the natural tissue structure and mechanical properties. However, the electrospun nanofibrous membrane is a kind of dense structure, which cannot meet the requirements of mechanical properties and permeability. In this study, we prepared nanofibrous scaffold with controllable porosity and crimpness by sacrificing fiber components and releasing residual stress. The results show that the crimpness of the fiber is positively related to the porosity, and with the increase of porosity, the fiber crimpness increases greatly. Meanwhile, the scaffold modulus was reduced by 86% and the elongation at break doubled, which is similar to natural blood vessels. Moreover, it is found that the porous micro-crimped fiber scaffold promotes the adhesion and diffusion of endothelial cells, and facilitates the rapid endothelialization of the scaffold, which has a great potential for practical application.
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Affiliation(s)
- Yan Zhang
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China; National Center for International Research of Micro-nano Molding Technology, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiaofeng Wang
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China; National Center for International Research of Micro-nano Molding Technology, Zhengzhou University, Zhengzhou, 450001, China.
| | - Kecheng Li
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China; National Center for International Research of Micro-nano Molding Technology, Zhengzhou University, Zhengzhou, 450001, China
| | - Yang Zhang
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China; National Center for International Research of Micro-nano Molding Technology, Zhengzhou University, Zhengzhou, 450001, China
| | - Xueke Yu
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China; National Center for International Research of Micro-nano Molding Technology, Zhengzhou University, Zhengzhou, 450001, China
| | - Haonan Wang
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China; National Center for International Research of Micro-nano Molding Technology, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiaoying Wu
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Zhijun Shi
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Lin Liu
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Wei Zheng
- Engineering and Technology Department, University of Wisconsin-STOUT, Menomonie, WI, USA, 54751
| | - Zhixiang Cui
- Department of Materials Science and Engineering, Fujian University of Technology, Fuzhou, 350118, China
| | - Yiyang Xu
- National Center for International Research of Micro-nano Molding Technology, Zhengzhou University, Zhengzhou, 450001, China
| | - Qian Li
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China; National Center for International Research of Micro-nano Molding Technology, Zhengzhou University, Zhengzhou, 450001, China.
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Korabel'nikov DV, Zhuravlev YN. Semi-empirical and ab initio calculations for crystals under pressure at fixed temperatures: the case of guanidinium perchlorate. RSC Adv 2020; 10:42204-42211. [PMID: 35516730 PMCID: PMC9057916 DOI: 10.1039/d0ra08588j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/13/2020] [Indexed: 01/05/2023] Open
Abstract
A simple semi-empirical approach is proposed to calculate structure and properties of crystals under pressure at fixed temperatures. The computed semi-empirical pressure dependencies for guanidinium perchlorate are in good agreement with available experimental data. Ab initio results within quasi-harmonic approximation for guanidinium perchlorate are also presented.
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Affiliation(s)
- Dmitry V Korabel'nikov
- Institute of Fundamental Sciences, Kemerovo State University Krasnaya 6 650043 Kemerovo Russia
| | - Yuriy N Zhuravlev
- Institute of Fundamental Sciences, Kemerovo State University Krasnaya 6 650043 Kemerovo Russia
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