dc.contributor.author | Spencer, Paulette | |
dc.contributor.author | Song, Linyong | |
dc.contributor.author | Misra, Anil | |
dc.date.accessioned | 2019-12-11T15:39:04Z | |
dc.date.available | 2019-12-11T15:39:04Z | |
dc.date.issued | 2018-12 | |
dc.identifier.citation | Biointerphases 13, 061004 (2018); doi: 10.1116/1.5058072 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/29851 | |
dc.description.abstract | Dentin adhesive systems for composite tooth restorations are composed of hydrophilic/hydrophobic
monomers, solvents, and photoinitiators. The adhesives undergo phase separation and concomitant
compositional change during their application in the wet oral environment; phase separation compromises
the quality of the hybrid layer in the adhesive/dentin interface. In this work, the adhesive
composition in the hybrid layer can be represented using the phase boundaries of a ternary phase
diagram for the hydrophobic monomer/hydrophilic monomer/water system. The polymer phases,
previously unaccounted for, play an important role in determining the mechanical behavior of the
bulk adhesive, and the chemomechanical properties of the phases are intimately related to the
effects produced by differences in the hydrophobic–hydrophilic composition. As the composition of
the polymer phases varies from hydrophobic-rich to hydrophilic-rich, the amount of the adsorbed
water and the nature of polymer–water interaction vary nonlinearly and strongly correlate with the
change in elastic moduli under wet conditions. The failure strain, loss modulus, and glass transition
temperature vary nonmonotonically with composition and are explained based upon primary and
secondary transitions observed in dynamic mechanical testing. Due to the variability in composition,
the assignment of mechanical properties and the choice of suitable constitutive models for
polymer phases in the hybrid layer are not straightforward. This work investigates the relationship
between composition and chemomechanical properties of the polymer phases formed on the wateradhesive
phase boundary using quasistatic and dynamic mechanical testing, mass transfer experiments,
and vibrational spectroscopy. | en_US |
dc.description.sponsorship | Research Grant Nos.R01DE022054 (PI: Spencer) and R01DE025476 (Spencer/Tamerler) | en_US |
dc.publisher | AIP Publishing | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | Structure–property relationships for wet dentin adhesive polymers | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Spencer, Paulette | |
kusw.kudepartment | Mechanical Engineering | en_US |
dc.identifier.doi | 10.1116/1.5058072 | en_US |
kusw.oaversion | Scholarly/refereed, published version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |