Forogh Mir Reza, Emadi Rahmatollah, Ahmadian Mehdi, Saboori Abdollah
Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran.
Integrated Additive Manufacturing Center, Department of Management and Production Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Tornio, Italy.
Materials (Basel). 2024 Aug 23;17(17):4187. doi: 10.3390/ma17174187.
This work investigates the essential constituents, production methods, and properties of polycaprolactone (PCL) and Baghdadite fibrous scaffolds. In this research, electrospinning was used to produce fiber ropes. In this study, the Baghdadite powder was synthesized using the sol-gel method and incorporated into PCL's polymeric matrix in formic acid and acetic acid solvents. The present work examined PCL-Baghdadite fibrous scaffolds at 1%, 3%, and 5 wt% for morphology, fiber diameter size, hydrophilicity, porosity, mechanical properties, degradability, and bioactivity. The introduction of Baghdadite nanopowder into pure PCL scaffolds reduced fiber diameter. The wetting angle decreased when Baghdadite nanopowder was added to fibrous scaffolds. Pure PCL reduced the wetting angle from 93.20° to 70.53°. Fibrous PCL scaffolds with Baghdadite nanopowder have better mechanical characteristics. The tensile strength of pure PCL fibers was determined at 2.08 ± 0.2 MPa, which was enhanced by up to 3 wt% by adding Baghdadite nanopowder. Fiber elasticity increased with tensile strength. Baghdadite at a 5% weight percentage reduced failure strain percentage. Fibers with more Baghdadite nanopowder biodegrade faster. Adding Baghdadite ceramic nanoparticles resulted in increased bioactivity and caused scaffolds to generate hydroxyapatite. The results show that Baghdadite PCL-3 wt% fibers have promising shape, diameter, and mechanical qualities. After 24 h, L-929 fibroblast cell viability was greater in the scaffold with 3% Baghdadite weight compared to the pure PCL. PCL-3 wt% Baghdadite fibers generated hydroxyapatite on the surface and degraded well. Based on the above findings, PCL fibers having 3 wt% of Baghdadite are the best sample for tissue engineering applications that heal flaws.
本研究探讨了聚己内酯(PCL)和斜硅钙石纤维支架的基本成分、生产方法及性能。在本研究中,采用静电纺丝法制备纤维绳。采用溶胶 - 凝胶法合成斜硅钙石粉末,并将其在甲酸和乙酸溶剂中掺入PCL聚合物基体。本研究对含1%、3%和5%重量比斜硅钙石的PCL - 斜硅钙石纤维支架的形态、纤维直径尺寸、亲水性、孔隙率、力学性能、降解性和生物活性进行了检测。向纯PCL支架中引入斜硅钙石纳米粉末会减小纤维直径。向纤维支架中添加斜硅钙石纳米粉末时,润湿角减小。纯PCL的润湿角从93.20°降至70.53°。含斜硅钙石纳米粉末的PCL纤维支架具有更好的力学性能。纯PCL纤维的拉伸强度测定为2.08±0.2MPa,添加斜硅钙石纳米粉末后,拉伸强度提高了3wt%。纤维弹性随拉伸强度增加。5%重量百分比的斜硅钙石会降低失效应变百分比。含更多斜硅钙石纳米粉末的纤维降解更快。添加斜硅钙石陶瓷纳米颗粒会导致生物活性增加,并使支架生成羟基磷灰石。结果表明,含3wt%斜硅钙石的PCL纤维在形状、直径和力学性能方面具有良好前景。24小时后,与纯PCL相比,含3%重量比斜硅钙石的支架中L - 929成纤维细胞活力更高。含3wt%斜硅钙石的PCL纤维在表面生成羟基磷灰石且降解良好。基于上述发现,含3wt%斜硅钙石的PCL纤维是修复缺陷的组织工程应用的最佳样品。