Design and fabrication of carbon fibers with needle-like nano-HA coating to reinforce granular nano-HA composites

Wang, Xudong; Zhao, Xueni; Zhang, Li; Wang, Wanying; Zhang, Jing; He, Fuzhen; Yang, Junhong

doi:10.1016/j.msec.2017.03.307

Cited by 22 publications

(10 citation statements)

References 39 publications

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“…Carbon mesh, carbon fibers and activated carbon fiber cloth (ACC) are biocompatible and bioinert materials [39][40][41][42][43] that are often proposed not as a support but as a material designed to improve the mechanical properties of apatites for bone regeneration [44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Strontium incorporation into biomimetic carbonated calcium-deficient hydroxyapatite coated carbon cloth: Biocompatibility with human primary osteoblasts

Olivier

Rochet

Delpeux-Ouldriane

et al. 2020

Materials Science and Engineering: C

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It has already been shown that sono-electrodeposition can be used to coat activated carbon fiber cloth (ACC) with calcium phosphates (CaP) and we recently demonstrated that cathodic polarization at-1 V / Hg/Hg2SO4 was the best parameter to obtain a carbonated calcium deficient hydroxyapatite (CDA) coating with optimal uniformity and homogeneity. In the present study, we investigated whether this technique was suitable to dope this carbonated CDA coating by partial substitution with another bivalent cation such as strontium. We show here that a strontium-substituted carbonated CDA coating can be produced and quantitatively controlled up to at least 10 at.%. In this range we demonstrate that the presence of strontium does not modify either the textural or the structural properties of the carbonated CDA. Owing to the well-known effect of both carbonated CDA and strontium in bone formation, the biocompatibility of ACC coated or not with carbonated CDA or with strontium substituted carbonated CDA was tested using primary human osteoblasts. Our data revealed a positive and dose-dependent effect of strontium addition on osteoblast activity and proliferation. In conclusion, we show here that electrodeposition at-1 V is a suitable and easy process to incorporate cations of biological interest into CaP coating.

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Section: Introductionmentioning

confidence: 99%

Strontium incorporation into biomimetic carbonated calcium-deficient hydroxyapatite coated carbon cloth: Biocompatibility with human primary osteoblasts

Olivier

Rochet

Delpeux-Ouldriane

et al. 2020

Materials Science and Engineering: C

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“…The toughness and flexibility of bone tissue can be ascribed to the complex biomineralization of collagen fibers with apatitic crystals, associated to the multi-scale hierarchical architecture [168]. The toughness of bioceramics can be improved by including additional biocompatible phases [169,170], crack bridging, or phase transformation, in order to control the crack growth [171][172][173].The dispersion of second phase such as fibers, whiskers, and particles for creating toughness in bioceramics was also reported [174][175][176][177].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Toughening of Bioceramic Composites for Bone Regeneration

et al. 2021

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Bioceramics are widely considered as elective materials for the regeneration of bone tissue, due to their compositional mimicry with bone inorganic components. However, they are intrinsically brittle, which limits their capability to sustain multiple biomechanical loads, especially in the case of load-bearing bone districts. In the last decades, intense research has been dedicated to combining processes to enhance both the strength and toughness of bioceramics, leading to bioceramic composite scaffolds. This review summarizes the recent approaches to this purpose, particularly those addressed to limiting the propagation of cracks to prevent the sudden mechanical failure of bioceramic composites.

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“…This might result from difference in thermal expansion coefficients between CNTs and HA matrix and agglomeration of CNTs. Difference in thermal expansion coefficients results in a large number of interfacial gaps, which leads to the CNTs/HA composites with lower bending strength than that of HAC0 [18]. On the other hand, it is a well-established fact that agglomeration of CNTs cannot be avoided, due to the high surface energy of CNTs [41].…”

Section: The Mechanical Properties Of the Compositesmentioning

confidence: 99%

“…This hinders their enhancement effects on the mechanical properties of various composite systems. Furthermore, the significant difference in thermal expansion coefficients between CNTs (−1.2 × 10 −5 /K) [17] and HA (11.6 × 10 −6 /K) [18] reduces the mechanical properties of composites. Therefore, the widespread applications of CNTs/HA composites are impeded.…”

Section: Introductionmentioning

confidence: 99%

“…Okpalugo et al [20] oxidized CNTs with mixed acid solution to obtain CNTs with carboxyl groups at the ends, and the dispersion of CNTs was improved. In addition, preparing HA coating on the surfaces of CNTs to reduce the difference in thermal expansion coefficient between CNTs and HA matrix is considered to be an effective method [18]. HA coating could improve the compatibility and increase bonding strength between the two materials.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Nano-Hydroxyapatite Coated Carbon Nanotube Reinforced Hydroxyapatite Composites

et al. 2018

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Uniform and dense nano-hydroxyapatite (nHA) coating with nanorod-shaped structure was fabricated on carbon nanotubes (CNTs) by combining electrodeposition with biomineralization. The CNTs with nHA coating (nHA–CNTs) were used as reinforcement to improve the mechanical properties of HA. Firstly, a mixed acid solution of nitric acid and sulfuric acid was used to treat CNTs (NS–CNTs). The dispersion of NS–CNTs was obviously improved, and O-containing functional groups were grafted on the surfaces of NS–CNTs by treatment. Then, calcium phosphate (CaP) was deposited on NS–CNTs by electrodeposition, and NS–CNTs were provided with numerous active nucleation sites for the next coating preparation process. Then nanorod-shaped HA crystals were obtained on the surfaces of NS–CNTs by biomineralization. Using the CNTs with nHA coating (nHA–CNTs) as reinforcement, HA-based composites reinforced with CNTs and nHA–CNTs (nHA–CNTs/HA) were fabricated by pressure-less process. Bending strength and fracture toughness of 1.0 wt % nHA–CNTs reinforced HA composites (HAnC1) reaches a maximum (30.77 MPa and 2.59 MPa), which increased by 26.94% and 7.02% compared with 1.0 wt % CNTs reinforced HA composites, respectively. Importantly, the fracture toughness of HAnC1 is within the range of that to compact bone. This work provides theoretical and practical guidance for preparing nHA coating on nanomaterials. It also contributes to the potential application of nHA–CNTs/HA composites for artificial bone implants.

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Design and fabrication of carbon fibers with needle-like nano-HA coating to reinforce granular nano-HA composites

Cited by 22 publications

References 39 publications

Strontium incorporation into biomimetic carbonated calcium-deficient hydroxyapatite coated carbon cloth: Biocompatibility with human primary osteoblasts

Strontium incorporation into biomimetic carbonated calcium-deficient hydroxyapatite coated carbon cloth: Biocompatibility with human primary osteoblasts

Toughening of Bioceramic Composites for Bone Regeneration

Preparation of Nano-Hydroxyapatite Coated Carbon Nanotube Reinforced Hydroxyapatite Composites

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