Titanium surfaces coated with alginate/hydroxyapatite composites by dip-coating technique

IF 4.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2026-06-05 DOI:10.1007/s10971-026-07194-0

Thaís Cristina Viana de Carvalho, Andreza Menezes Lima, Wesley Brito Jalil da Fonseca, Carlos Alberto Senna, Rodrigo Prioli Menezes, Marcelo Eduardo Huguenin Maia da Costa, Roseli Marins Balestra, Alexandre Antunes Ribeiro

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Abstract

Alginate/Hydroxyapatite (Alg/HA) composites at different ratios (Alg_pure, 5:1, 4:1, 3:1, 2:1) were deposited on titanium (Ti) surface using the dip-coating technique. The influence of composition on coating homogeneity, morphology, and physicochemical properties was systematically investigated. FITR, Raman, XRD, and SEM/EDS analyses confirmed the presence of HA phase within the polymer matrix. The Alg2:1HA coating displayed cracks in the Alg/HA interface, suggesting saturation of polymer matrix. The rheological assays displayed all suspensions exhibited non-Newtonian shear-thinning behavior. The profilometry assessments indicated that all coatings exhibited suitable micro-roughness for promoting osseointegration. SEM/FIB and optical microscopy revealed that the Alg3:1HA and Alg2:1HA coatings demonstrated good adhesion and mechanical strength when subjected to tensile stress in a three-point bending test. However, Alg3:1HA coating demonstrated a more favorable properties, with no cracks in the Alg/HA interface. Overall, these findings contribute valuable insights toward the development of bioactive, mechanically resistant coatings for orthopedic and dental applications.

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海藻酸盐/羟基磷灰石复合材料在钛表面的浸渍涂层技术

采用浸涂技术在钛（Ti）表面沉积不同比例（Alg_pure, 5:1, 4:1, 3:1, 2:1）的海藻酸盐/羟基磷灰石（Alg/HA）复合材料。系统地研究了镀层成分对镀层均匀性、形貌和理化性能的影响。FITR, Raman， XRD和SEM/EDS分析证实了聚合物基体中HA相的存在。Alg2:1HA涂层在Alg/HA界面出现裂纹，表明聚合物基体饱和。流变试验表明，所有悬浮液均表现出非牛顿剪切减薄行为。轮廓学评价表明，所有涂层都具有促进骨整合的适当微粗糙度。SEM/FIB和光学显微镜显示，在三点弯曲拉伸应力下，alg3 . 1 ha和alg2 . 1 ha涂层表现出良好的附着力和机械强度。然而，Alg3:1HA涂层表现出更有利的性能，在Alg/HA界面上没有裂纹。总的来说，这些发现为骨科和牙科应用的生物活性，机械抗性涂层的发展提供了有价值的见解。此图像的替代文本可能是使用AI生成的。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.