کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6481456 1398876 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spin-coating synthesis and characterization of Zn-doped hydroxyapatite/polylactic acid composite coatings
ترجمه فارسی عنوان
سنتز اسپین پوشش و خصوصیات پوشش های کامپوزیت اسید هیدروکسی آپاتیت / پلی اتیلن اسید
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی


- Zn-doped HA/PLA composite coatings were synthesized by spin-coating technique for the first time.
- Zn ions were demonstrated to dope into HA crystal lattice successfully.
- The addition of PLA could keep metal substrates from catalyzing the decomposition of HA.
- TEM images showed the substitution of Zn ions restrained HA crystal growth and decreased its size.

Zn-doped hydroxyapatite/polylactic acid (HA/PLA) composite coatings fabricated by spin-coating technique have rarely been studied by other researchers in recent years. In this study, Zn-doped hydroxyapatite (Zn-doped HA) powder were synthesized by chemical precipitation method, and then Zn-doped hydroxyapatite/polylactic acid (Zn-doped HA/PLA) composite coatings were coated on stainless steel substrates using a spin-coating technique for the first time. The effects of heat treatment in air at 600 °C on the composition and morphology of Zn-doped HA/PLA composite coatings with a series of molar ratios of zinc (0 mol%, 5 mol%, 10 mol%, 15 mol% and 20 mol%) were studied. The obtained samples were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The results showed that Zn2 + ions had replaced the partial Ca2 + ions and were doped into hydroxyapatite lattice successfully. The synthetic hydroxyapatite nanoparticles showed rod-like morphology, whereas the substitution of the Zn ions restrained the growth of Zn-doped HA crystal and decreased its size. The surface morphology of Zn-doped HA/PLA composite coatings after sintering at 600 °C for 1 h exhibited a uniform, porous structure with a thickness of 60 μm or so. The introduction of PLA in composite coatings could keep metal substrates from catalyzing the decomposition of HA caused by high temperature heat treatment.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 307, Part A, 15 December 2016, Pages 461-469
نویسندگان
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