Show simple item record

dc.contributor.authorSpencer, Paulette
dc.contributor.authorSong, Linyong
dc.contributor.authorMisra, Anil
dc.identifier.citationBiointerphases 13, 061004 (2018); doi: 10.1116/1.5058072en_US
dc.description.abstractDentin 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.sponsorshipResearch Grant Nos.R01DE022054 (PI: Spencer) and R01DE025476 (Spencer/Tamerler)en_US
dc.publisherAIP Publishingen_US
dc.titleStructure–property relationships for wet dentin adhesive polymersen_US
kusw.kuauthorSpencer, Paulette
kusw.kudepartmentMechanical Engineeringen_US
kusw.oaversionScholarly/refereed, published versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US

Files in this item


This item appears in the following Collection(s)

Show simple item record
Except where otherwise noted, this item's license is described as: