Comparative study on the mechanical and fracture properties of acrylic bone cements prepared with monomers containing amine groups
In this work, the effect of the incorporation of comonomers containing amine groups on the mechanical and fracture properties of acrylic bone cements was studied. Cements were prepared with either diethyl amino ethyl acrylate (DEAEA), dimethyl amino ethyl methacrylate (DMAEM) or diethyl amino ethyl methacrylate (DEAEM) as comonomer in the liquid phase. It was found that strength and modulus decreased with increasing comonomer content in the bending and compressive tests. It was also observed that fracture toughness (K IC ) and the critical strain energy release rate (G IC ) increase with increasing comonomer concentration and are significantly higher compared to the control formulation. The mechanical and fracture properties of cements were also evaluated after soaking the specimens in Simulated Body Fluid (SBF) for 3 and 6 months. It was found that the mechanical properties of cements decreased when the samples were stored in SBF, although the impact strength increased in the first 3 months and then decreased. SEM micrographs were in agreement with the results obtained during mechanical characterization as the increase in toughness was confirmed by the appearance of ductile tearing pattern which is associated with plastic deformation.
| Main Author: | |
|---|---|
| Format: | info:eu-repo/semantics/article biblioteca |
| Subjects: | info:eu-repo/classification/cti/7, |
| Online Access: | http://cicy.repositorioinstitucional.mx/jspui/handle/1003/176 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | In this work, the effect of the incorporation of comonomers containing amine groups on
the mechanical and fracture properties of acrylic bone cements was studied. Cements
were prepared with either diethyl amino ethyl acrylate (DEAEA), dimethyl amino ethyl
methacrylate (DMAEM) or diethyl amino ethyl methacrylate (DEAEM) as comonomer in
the liquid phase. It was found that strength and modulus decreased with increasing
comonomer content in the bending and compressive tests. It was also observed that
fracture toughness (K
IC
) and the critical strain energy release rate (G
IC
) increase with
increasing comonomer concentration and are significantly higher compared to the control
formulation. The mechanical and fracture properties of cements were also evaluated
after soaking the specimens in Simulated Body Fluid (SBF) for 3 and 6 months. It
was found that the mechanical properties of cements decreased when the samples
were stored in SBF, although the impact strength increased in the first 3 months and
then decreased. SEM micrographs were in agreement with the results obtained during
mechanical characterization as the increase in toughness was confirmed by the appearance
of ductile tearing pattern which is associated with plastic deformation. |
|---|