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首页> 外文期刊>Acta biomaterialia >Characterization and dissolution of functionalized amorphous calcium phosphate biolayers using single-splat technology.
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Characterization and dissolution of functionalized amorphous calcium phosphate biolayers using single-splat technology.

机译：使用单溅技术表征和溶解功能化的无定形磷酸钙生物层。

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摘要

New processing routes and characterization techniques underpin further growth of biomaterials for improved performance and multifunctionality. This study investigates the characteristics and solubility of amorphous calcium phosphate (ACP) printed splats. Splats made from 20 to 60 mum molten hydroxyapatite particles were classified for shape (rounded/splashed) and cracking. Recoil of the spread droplet created a bowl-shaped splat. This has previously not been observed and could be related to the longer solidification time associated with solidification to an ACP. A central depression was created from 20 mum particles, but a bowl-shaped splat from 60 mum particles. Cracking was more prevalent for splats that solidified with an edge discontinuity. Splats immersed in pH 7.3 tris buffer displayed dissolution followed by cracking. Cracking continued over a period of 15 min as dissolution induced more cracks. Further degradation occurred by delamination of splat segments. Delamination accelerated the process of splat removal. Applied to thermal spray coatings, this highlights topography and dissolution at the splat level. The use of separate splats can potentially be used as a biolayer where splats are separate, in a line or on top of each other.
机译：新的加工路线和表征技术为生物材料的进一步发展奠定了基础，以提高性能和多功能性。这项研究调查了无定形磷酸钙（ACP）印刷板的特性和溶解性。将由20至60微米的熔融羟基磷灰石颗粒制成的短片分类为形状（圆形/倾斜）和开裂。散布的液滴的后坐力产生了碗状的飞溅。以前尚未观察到此现象，并且可能与固化到ACP相关的更长的固化时间有关。中心凹陷由20个粒子形成，但碗状飞溅由60个粒子产生。对于边缘不连续而固化的裂纹，裂纹更普遍。浸入pH 7.3 tris缓冲液中的Splats表现出溶解，然后破裂。由于溶解引起更多的裂纹，裂纹持续了15分钟。飞溅片段的分层会进一步降解。分层加速了splat去除过程。应用于热喷涂涂料时，这可突出显示splat级别的形貌和溶解性。使用单独的splats可能会用作生物层，其中splats呈直线排列或彼此叠置。

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