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Computer engineering in designing and fabrication of tissue analogue-type coating dedicated for the cardiovascular regeneration

Trembecka-Wojciga K., Major R., Bruckert F., Lackner J. M., Lacki P., Sanak M., Major B.

Archives of Civil and Mechanical Engineering

2015

Vol. 15, no. 3

621--630

The work was related to the development of novel methods in designing and fabrication of thin, porous, tissue-like coatings. The surface modification was designed to create an environment for the appropriate cell growth. The originally designed system was established to prepare porous, synthetic coatings. The dedicated software was elaborated to control the sequential coating deposition based on the electrostatic interaction. The finite elements method (FEM) was used to determine structural and mechanical properties of the coatings. The numerical model was verified experimentally. The performed simulation predicted the coating stabilization by the graphene nanoparticles. Graphene was introduced as a stabilizer of the polymer coating. The elaborated automatic system allowed preparation the porous coatings, repetitively. Coatings were stabilized by the cross-linking chemical reaction using 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and N-hydroxysuccinimide. Nanoparticles were introduced by means of the electrostatic interaction. Mechanical analysis revealed an influence of the porous structure modification on the coating stiffness. Dynamic tests on blood subjected to the aortic flow showed antithrombogenic properties of the elaborated coatings.