Аннтотация

© 2019 Author(s). The volume structure of nanocomposites obtained by laser printing from water-collagen dispersions of carbon nanofibers was studied using X-ray microtomography. For the preparation of dispersions, ultrasonic homogenization methods were used. The concentration of the components was: bovine collagen -1 wt.%, nanofibres -0.01 wt.% and 0.1 wt.%. The experiments were carried out at a voltage on the cathode of an x-ray tube ∼30 kV, current strength -300 mA; the number of projections -3000 at the angle of rotation -0.1°. The porosity of the composites ranged from 25 to 35%. Closed pore spaces were mainly observed in the structure of composites (28%). The pore size (16-23 μm) depended on the size of the protein conglomerates. Using the same water-collagen dispersion of carbon nanofibers, a coating was formed on 2.5 mm wide polymer tapes, which were implanted by pressfit technique into a channel formed in the cancellous bone of laboratory animals. To study the structural reaction of the bone, a three-dimensional visualization of the bone canal was carried out at different observation times. The results of the X-ray study showed that after implantation, there are processes that reflect the osteoconductive properties of the composite.