کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7785257 | 1500605 | 2016 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface stiffening and enhanced photoluminescence of ion implanted cellulose - polyvinyl alcohol - silica composite
ترجمه فارسی عنوان
سفت شدن سطح و افزایش فوتولومینسانس سلولز - پلی وینیل الکل - کامپوزیت سیلیکا
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کلمات کلیدی
سلولز، سیلیکا، ایمپلنت یون مدول الاستیک کامپوزیت فوتولومینسانس،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
Novel Cellulose (Cel) reinforced polyvinyl alcohol (PVA)-Silica (Si) composite which has good stability and in vitro degradation was prepared by lyophilization technique and implanted using N3+ ions of energy 24Â keV in the fluences of 1Â ÃÂ 1015, 5Â ÃÂ 1015 and 1Â ÃÂ 1016Â ions/cm2. SEM analysis revealed the formation of microstructures, and improved the surface roughness on ion implantation. In addition to these structural changes, the implantation significantly modified the luminescent, thermal and mechanical properties of the samples. The elastic modulus of the implanted samples has increased by about 50 times compared to the pristine which confirms that the stiffness of the sample surface has increased remarkably on ion implantation. The photoluminescence of the native cellulose has improved greatly due to defect site, dangling bonds and hydrogen passivation. Electric conductivity of the ion implanted samples was improved by about 25%. Hence, low energy ion implantation tunes the mechanical property, surface roughness and further induces the formation of nano structures. MG63 cells seeded onto the scaffolds reveals that with the increase in implantation fluence, the cell attachment, viability and proliferation have improved greatly compared to pristine. The enhancement of cell growth of about 59% was observed in the implanted samples compared to pristine. These properties will enable the scaffolds to be ideal for bone tissue engineering and imaging applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 153, 20 November 2016, Pages 619-630
Journal: Carbohydrate Polymers - Volume 153, 20 November 2016, Pages 619-630
نویسندگان
G.M. Shanthini, N. Sakthivel, Ranjini Menon, P.Y. Nabhiraj, J.A. Gómez-Tejedor, J.M. Meseguer-Dueñas, J.L. Gómez Ribelles, J.B.M. Krishna, S. Narayana Kalkura,