کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7868438 | 1509163 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Physicochemical properties and bioactivity of freeze-cast chitosan nanocomposite scaffolds reinforced with bioactive glass
ترجمه فارسی عنوان
خواص فیزیکی و شیمیایی و زیست سازگاری داربست های نانوکامپوزیت کیتوزان انجماد تقویت شده با شیشه های زیست فعال
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
چکیده انگلیسی
Chitosan based nanocomposite scaffolds were prepared by freeze casting method through blending constant chitosan concentration with different portions of synthesized bioactive glass nanoparticles (BGNPs). Transmission Electron Microscopy (TEM) image showed that the particles size of bioactive glass (64SiO2.28CaO.8P2O5) prepared by sol-gel method was approximately less than 20Â nm. Fourier Transform Infrared Spectroscopy (FT-IR) and X-ray Diffraction (XRD) analysis showed proper interfacial bonding between BGNPs and chitosan polymers. Scanning Electron Microscopy (SEM) images depicted a unidirectional structure with homogenous distribution of BGNPs among chitosan matrix associated with the absence of pure chitosan scaffold's wall pores after addition of only 10Â wt.% BGNPs. As the BGNP content increased from 0 to 50Â wt.%, the compressive strength and compressive module values increased from 0.034 to 0.419Â MPa and 0.41 to 10.77Â MPa, respectively. Biodegradation study showed that increase in BGNP content leads to growth of weight loss amount. The in vitro biomineralization studies confirmed the bioactive nature of all nanocomposites. Amount of 30Â wt.% BGNPs represented the best concentration for absorption capacity and bioactivity behaviors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 58, 1 January 2016, Pages 180-186
Journal: Materials Science and Engineering: C - Volume 58, 1 January 2016, Pages 180-186
نویسندگان
Masoud Pourhaghgouy, Ali Zamanian, Mostafa Shahrezaee, Milad Pourbaghi Masouleh,