SEARCH

SEARCH BY CITATION

Keywords:

  • adhesives;
  • dental polymers;
  • disulfides;
  • kinetics of polymerizations;
  • monomers

Abstract

Thumbnail image of graphical abstract

The 2-ethoxycarbonylallyl 5-(1,2-dithiolane-3-yl)-pentanoate monomer (AODS) includes in its molecular structure C[DOUBLE BOND]C and S[BOND]S reactive bonds allowing it to behave as a bi-functional monomer, possessing two groups, however, with different reactivity for use in polymer chain building. The polymerization-specific features of this monomer are the absence of auto-acceleration and polymer chain crosslinking. Polymerization proceeds readily through most free-radical initiators. One exception, carboxy-peroxides are rapidly decomposed without the production of free radicals. AODS is partially converted to a gel without the consumption of double bonds during monomer dissolution in certain organic solvents and after being mixed in solution with carboxy-peroxides. The determined AODS-co-MMA copolymerization parameters are r1 = 2.61, r2 = 0.23 if Luperco peroxide is used as a polymerization initiator, and r1 = 2.71, r2 = 0.38 if AIBN is used.