Abstract
A particulate composite material was prepared by adding (CaCO3, CaO, MgCO3, MgO) ceramic particles with particle size of (< 53 μm) to unsaturated polyester resin with weight fraction of (3, 6, 9, 12, 15)% and fixed amount of CaF2 (0.5% wt.). The results had revealed that the maximum values of tensile strength, compression, bending strength, hardness, impact energy and water absorption%, were (57.6828 N/mm2 at 3% wt. CaCO3, 124.0965 N/mm2 at 9% wt. CaCO3, 102.188 N/mm2 at 9% wt. MgO, 88.2 Shore D at 9% wt. CaCO3, 0.27 J at 6%wt. CaCO3 and 0.8432 % at 15%wt.CaO) compared with reference values, i.e.( 37.4742 N/mm2, 100.3563 N/mm2, 34.194 N/mm2, 83 Shore D, 0.36 J and 0.2626%) respectively.
Highlights
Materials that interface with biological entities are used to create prosthesis, medical devices and replace natural body tissue are broadly called as biomaterials [1]
The CaO specimen exhibits lowest tensile strength compared to other specimens this may be due to larger particle size [13] or CaO filler particles have hygroscopic properties, during fabrication when it is added to unsaturated polyester resin, that lead to form a high viscose mixture that lead to decrease resin wettability in turn affected in resultant mechanical properties of composite
Figure (2) shows the relationship between the elongation percentage calculated at break point and the weight fraction of the filler particles of (CaCO3, CaO, MgCO3 and MgO), which were added to the unsaturated polyester resin, respectively
Summary
Materials that interface with biological entities are used to create prosthesis, medical devices and replace natural body tissue are broadly called as biomaterials [1]. The polymer acidity is to be regulated by normalizing In this light, adding an additives of an alkaline nature like carbonates or their oxides to polyester can provide a pH buffering effect at the polymer surface and, avoid an unfavorable environment for new bone growth. These additives may play an important role in improving the engineering properties of unsaturated polyester considering its effects as filler modifiers. D. The filler of (CaO, CaCO3, MgO and MgCO3) and the matrix were mixed for about 20 minute at room temperature continuously and slowly to avoid bubbling during mixing, and the hardener was added to the mixture with gentle mixing.
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