An investigation on injectable composites fabricated by 45S5 bioactive glass and gum tragacanth: Rheological properties and in vitro behavior
محل انتشار: مجله سرامیک های پیشرفته، دوره: 4، شماره: 2
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 456
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شناسه ملی سند علمی:
JR_ACERPT-4-2_003
تاریخ نمایه سازی: 23 مهر 1398
چکیده مقاله:
The injectable composites were formulated from melt-derived 45S5 bioactive glass powder and gum tragacanth. The effect of tragacanth concentration (2 and 4 w/v%) and powder to liquid ratio (P/L= 1.5 to 2.5) on rheological properties, injectability, degradation, swelling, and bioactivity the composites was studied. With the increase of P/L ratio and tragacanth concentration, the force required for injection of the composites increased, however, the formulated composites showed maximum injection force of 15 N, which seems to be proper for surgical purposes. The formulated composites showed positive thixotropic behavior and the composites prepared with 2% tragacanth showed greater thixotropy than ones made of 4% tragacanth. The composites formulated by 2% tragacanth showed much more resistance against degradation and swelling. The bioactivity assay confirmed the formation of flake-like apatite nanostructures on the surface of nanocomposites on initial days of immersion in the SBF.
کلیدواژه ها:
نویسندگان
Mahtab Rasti
Nanotechnology and Advanced Materials, MERC
Saeed Hesaraki
Nano-Techology and Advanced Materials, MERC
Nader Nezafati
Nano, MERC