HA-hybrid matrix composite coating on Ti-Cp for biomedical application

Herein, biodegradable composites of poly(ϵ-caprolactone) (PCL)/hydroxyapatite (HAP)/urea, with potential application in agriculture, were developed. The concentration of HAP was fixed at 3 wt%, while urea concentration varied from 1 to 9 wt%. The effects of urea loading on the morphological, flow properties, and soil biodegradation of PCL/HAP composites were investigated. The morphological characterization showed well dispersion of HAP and urea particles in the PCL matrix. A decrease in viscosity of PCL was noticed upon the inclusion of urea at 1 wt%, indicating the plasticization effects of urea, whereas an increase in viscosity was observed with increasing the concentration. The morphological analysis after soil burial showed microbial adherence on the surface of the samples. In addition, the formation of cracks, holes, and uneven surfaces were noticed. The atomic force microscope analysis showed an increase in surface roughness due to surface degradation of the samples. On the other hand, twostep degradation curves were noticed in the samples before soil degradation. In contrast, a single step degradation curve was observed after degradation, indicating the leaching of urea from the samples. Overall, PCL/HAP/urea composites with enhanced degradation rates were developed, and they can be applied in agriculture, where the materials can be buried after their end-use.

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“…These are characteristic peaks of hydroxyapatite nanoparticles. The asymmetric stretching of PO 4 3− is observed at 958 cm −1 32,33 …”

Section: Resultsmentioning

confidence: 99%

“…30 The 3À is observed at 958 cm À1 . 32,33 The chemical structures of the prepared composites before and after soil burial are demonstrated in Figure 6b-h. During the degradation process, polymer chains break into smaller fragments.…”

Section: Chemical Structuresmentioning

confidence: 99%

Effects of urea loading on soil biodegradation properties of melt‐processed polycaprolactone‐based composites for potential application in agriculture

Motloung

Mofokeng

Ray

2022

J of Applied Polymer Sci

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“…The sol-gel process, on the other hand, is a simple but effective approach for depositing a wide range of compounds on a variety of surfaces. Process parameters such as the number of dipping stages and substrate immersion velocity can regulate film qualities like thickness and layer uniformity [19,20].…”

Section: Introductionmentioning

confidence: 99%

Bioinspired TiO₂/chitosan/HA coatings on Ti surfaces: biomedical improvement by intermediate hierarchical films

Rahnamaee¹,

Seyedkhani²,

Saed³

et al. 2022

Biomed. Mater.

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The most common reasons for hard-tissue implant failure are structural loosening and prosthetic infections. Hence, to fix the first problem, different bioinspired coatings were applied to the titanium alloy surfaces in this study, including dual acid-etched, anodic TiO2 nanotubes array (TNTs), anodic hierarchical titanium oxide, micro- and nanostructured hydroxyapatite (HA) layers, and HA/chitosan (HA/CS) nanocomposite coating. XRD and FTIR analysis demonstrated that the in situ HA/chitosan nanocomposite formed successfully. The MTT assay showed that all samples had excellent cell viability, with cell proliferation rates ranging from 120-150% after 10 days. The hierarchical coating demonstrated superhydrophilicity (θ ≈ 0°) and increased the wettability of the metallic Ti surface by more than 120%. The friction coefficient of all fabricated surfaces was within the range of natural bone's mechanical behavior. The intermediate hierarchical oxide layer increased the adhesion strength of the HA/chitosan coating by more than 60%. The Hierarchical middle oxide layer caused the mechanical stability of HA/CS during the 1000 m of friction test. The microhardness of HA/CS (22.5 HV) and micro-HA (25.5 HV) coatings was comparable to that of human bone. An intermediate hierarchical oxide-based mechanism for improving adhesion strength in HA/CS coatings was presented.

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A Comprehensive Review of Surface Modification Techniques for Enhancing the Biocompatibility of 3D-Printed Titanium Implants

Long,

Zhu,

Jing

et al. 2023

Coatings

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The advent of three-dimensional (3D) printing technology has revolutionized the production of customized titanium (Ti) alloy implants. The success rate of implantation and the long-term functionality of these implants depend not only on design and material selection but also on their surface properties. Surface modification techniques play a pivotal role in improving the biocompatibility, osseointegration, and overall performance of 3D-printed Ti alloy implants. Hence, the primary objective of this review is to comprehensively elucidate various strategies employed for surface modification to enhance the performance of 3D-printed Ti alloy implants. This review encompasses both conventional and advanced surface modification techniques, which include physical–mechanical methods, chemical modification methods, bioconvergence modification technology, and the functional composite method. Furthermore, it explores the distinct advantages and limitations associated with each of these methods. In the future, efforts in surface modification will be geared towards achieving precise control over implant surface morphology, enhancing osteogenic capabilities, and augmenting antimicrobial functionality. This will enable the development of surfaces with multifunctional properties and personalized designs. By continuously exploring and developing innovative surface modification techniques, we anticipate that implant performance can be further elevated, paving the way for groundbreaking advancements in the field of biomedical engineering.

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HA-hybrid matrix composite coating on Ti-Cp for biomedical application

Cited by 3 publications

References 45 publications

Effects of urea loading on soil biodegradation properties of melt‐processed polycaprolactone‐based composites for potential application in agriculture

Effects of urea loading on soil biodegradation properties of melt‐processed polycaprolactone‐based composites for potential application in agriculture

Bioinspired TiO₂/chitosan/HA coatings on Ti surfaces: biomedical improvement by intermediate hierarchical films

A Comprehensive Review of Surface Modification Techniques for Enhancing the Biocompatibility of 3D-Printed Titanium Implants

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HA-hybrid matrix composite coating on Ti-Cp for biomedical application

Cited by 3 publications

References 45 publications

Effects of urea loading on soil biodegradation properties of melt‐processed polycaprolactone‐based composites for potential application in agriculture

Effects of urea loading on soil biodegradation properties of melt‐processed polycaprolactone‐based composites for potential application in agriculture

Bioinspired TiO2/chitosan/HA coatings on Ti surfaces: biomedical improvement by intermediate hierarchical films

A Comprehensive Review of Surface Modification Techniques for Enhancing the Biocompatibility of 3D-Printed Titanium Implants

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Bioinspired TiO₂/chitosan/HA coatings on Ti surfaces: biomedical improvement by intermediate hierarchical films