Abstract
Lactide-ε-caprolactone copolymers [P(LA-co-CL)] were added to α-cyanoacrylates [CA] for thickening CA and plasticizing the resulting polymer. In addition to the viscosity, the set time, the spreading in blood, the bond strength of CA, and the stiffness of CA polymers were determined after CA mixing with P(LA-co-CL). The pressure-diameter relation for canine femoral arteries coated with CA was utilized to determine the stiffness parameter of the CA polymers. Furthermore, growth inhibition of Swiss 3T3 cells was tested using microspheres of the mixtures. It was found that the longer the side chain of CA, the lower was the stiffness of the polymer. With the increasing amount of P(LA-co-CL) in the mixture, the stiffness parameter decreased, while both the viscosity and the set time of CA increased. There was no difference in the bond strength, in vivo, between the pure CA and the CA mixed with the various concentrations of P(LA-co-CL) up to 15 wt.%. The copolymer addition to CA significantly reduced the cell growth inhibition of CA.
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Tseng, YC., Hyon, SH., Ikada, Y. (1990). Physical Modification of α-Cyanoacrylate for Application as Surgical Adhesives. In: Gebelein, C.G., Dunn, R.L. (eds) Progress in Biomedical Polymers. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0768-4_8
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DOI: https://doi.org/10.1007/978-1-4899-0768-4_8
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