|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|810678||1469098||2015||9 صفحه PDF||سفارش دهید||دانلود رایگان|
• New nanoplate-like HAp/PLA nanocomposites were prepared by intercalation technique.
• XRD analysis indicated that HAp/PLA nanocomposites showed exfoliated structure.
• HAp/PLA nanocomposites showed higher mechanical properties than unreinforced PLA.
• Cell studies suggested that HAp/PLA nanocomposites had excellent biocompatibility.
Hydroxyapatite (HAp) in the forms of fiber, needle, and whisker has been employed as fillers in polymer composites. Herein, nanoplate-like HAp synthesized by template-assisted self-assembly was used to reinforce polylactide (PLA) nanocomposites via the solution intercalation method. Dynamic and static mechanical properties and cytotoxicity of the as-prepared HAp/PLA nanocomposites were assessed in addition to characterizations by XRD, FTIR, and TGA. XRD analysis confirms the formation of exfoliated structure in the HAp/PLA nanocomposites. The HAp/PLA nanocomposites exhibit better static and dynamic mechanical properties than unreinforced PLA. Furthermore, the HAp/PLA nanocomposite with an optimum HAp content of 20 wt% (20HAp/PLA) demonstrates not only the best mechanical performance but also the highest thermal stability among the nanocomposite samples. Cell studies using a mouse fibroblast cell line (L929) suggest that 20HAp/PLA shows excellent biocompatibility, which makes it a promising material for biomedical applications.
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Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 47, July 2015, Pages 29–37