Structure-properties relationships for densely cross-linked epoxide-amine systems based on epoxide or amine mixtures

Bellenger, V.; Verdú, J.; Morel, E.

doi:10.1007/bf00660933

Cited by 129 publications

(92 citation statements)

References 17 publications

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“…Water molecules diffuse through pores in the material without mutual relationship to the polar sites of the material 28) . The water sorption in BF might therefore have been due to pore formation within the polymerized adhesive caused by the presence of residual solvent.…”

Section: Discussionmentioning

confidence: 99%

Dentin bond durability and water sorption/solubility of one-step self-etch adhesives

et al. 2010

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The purpose of this study was to evaluate the dentin bonding durability of three HEMA-containing one-step self-etch adhesives after one-year water storage and to measure the amounts of their water sorption/solubility. OptiBond All-In-One (OP), Bond Force (BF) and Clearfil S 3 Bond (S 3 ) were applied to the dentin surfaces according to manufacturers' instructions. Bond strengths to dentin were determined using µTBS test after water storage for 24 hours, six months, and one year. In addition, water sorption and solubility of the polymerized adhesives were measured. The µTBS of S 3 and OP significantly decreased after one year. On the other hand, for BF there were no significant differences in µTBS between all storage periods. There were significant differences in water sorption and solubility among the adhesives (BF>S 3 >OP). The initial amounts of water sorption and solubility of the three adhesives did not affect their bonding durability to dentin.

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Section: Discussionmentioning

confidence: 99%

Dentin bond durability and water sorption/solubility of one-step self-etch adhesives

et al. 2010

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“…In the "interaction theory," water molecules diffuse through the material, binding successively to the hydrophilic groups. 19 There are several factors involved in polymer water sorption and solubility characteristics, such as pH of the storage media; 20-21 degree of conversion, 22 polarity of the molecular structure, presence of pendant hydroxyl groups capable of forming hydrogen bonds with water, degree of crosslinking, 23 presence of residual water and presence and type of filler particles. 14,[24][25] After entering the polymer matrix, water triggers chemical degradation, resulting in the formation of oligomers and monomers.…”

mentioning

confidence: 99%

Influence of Water-storage Time on the Sorption and Solubility Behavior of Current Adhesives and Primer/Adhesive Mixtures

Reis

Giannini²,

Pereira³

2007

Operative Dentistry

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The simplified one-step self-etching adhesive and primer/adhesive blends presented high water sorption values that increased with increased water-storage time. High water sorption and solubility values might be related to marginal discoloration and degradation of the bond. SUMMARYThis study evaluated the effects of water-storage on the water sorption and solubility behavior of five commercially available dental adhesive systems and two primer/adhesive mixtures. The adhesives comprised three different approaches to bonding to hard tooth tissues: a one-step selfetching adhesive (One-up Bond F), two two-step self-etching primers (Clearfil SE Bond and Clearfil Protect Bond) and two etch-and-rinse systems: a water/ethanol-based (Single Bond) and an acetone-based filled adhesive (Prime&Bond NT). The bonding agents and primers of the two-step selfetching systems were mixed in a 1:1 volume ratio. Water sorption and solubility values were determined after 1, 7, 30, 90 and 180 days. The results showed that, except for SB, all adhesives presented increased water sorption with increased storage time. The one-step self-etching adhesive and self-etching primer/adhesive mixtures presented the highest water sorption and solubility values. Equilibrium in the water sorption values was observed for all adhesives after 90 days of waterstorage. However, solubility values continued to increase for some materials until 180 days. The sorption and solubility behavior of the materials tested seem to be related to hydrophilicity of the adhesive resin solution and might influence the long-term performance of resin-based composite restorations.

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“…Water is more or less soluble in epoxies, depending on the polar group content of the polymer, especially groups able to establish strong hydrogen bonds with water molecules. Experimental evidence of such hydrogen bonds, on the basis of NMR [12,13], from structureesolubility relationships [14] or from the analysis of the heat of dissolution [15] is extensive.…”

Section: Physical Interactionmentioning

confidence: 99%

Thermomechanical and hygroelastic properties of an epoxy system under humid and cold-warm cycling conditions

Yagoubi

Lubineau

Saghir

et al. 2014

Polymer Degradation and Stability

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. a b s t r a c tIn this paper, we study the hygrothermal aging of an anhydride-cured epoxy under temperature and hygrometry conditions simulating those experienced by an aircraft in wet tropical or subtropical regions. Gravimetric and dimensional measurements were performed and they indicate that there are three stages in this aging process: the first one, corresponding to the early cycles can be called the "induction stage". The second stage of about 1000 cycles duration, could be named the "swelling stage", during which the volume increase is almost equal to the volume of the (liquid) water absorbed. Both the first and second stages are accompanied by modifications of the mechanical properties and the glass transition temperature. During the third ("equilibrium") stage, up to 3000 cycles, there is no significant change in the physical properties despite the continuous increase of water uptake. This can be explained by the fact that only physically sorbed water can influence physical properties.

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Structure-properties relationships for densely cross-linked epoxide-amine systems based on epoxide or amine mixtures

Cited by 129 publications

References 17 publications

Dentin bond durability and water sorption/solubility of one-step self-etch adhesives

Dentin bond durability and water sorption/solubility of one-step self-etch adhesives

Influence of Water-storage Time on the Sorption and Solubility Behavior of Current Adhesives and Primer/Adhesive Mixtures

Thermomechanical and hygroelastic properties of an epoxy system under humid and cold-warm cycling conditions

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