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Article: Solvent and water retention in dental adhesive blends after evaporation

TitleSolvent and water retention in dental adhesive blends after evaporation
Authors
KeywordsAcetone
Ethanol
Hydrophilicity
Resin
Solubility parameter
Issue Date2005
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/biomaterials
Citation
Biomaterials, 2005, v. 26 n. 34, p. 6863-6872 How to Cite?
AbstractThis study examined the extent of organic solvent and water retention in comonomer blends with different hydrophilicity (Hoy's solubility parameter for hydrogen bonding, δh) after solvent evaporation, and the extent of tracer penetration in polymerised films prepared from these resins. For each comonomer blend, adhesive/solvent mixtures were prepared by addition of (1) 50 wt% acetone, (2) 50 wt% ethanol, (3) 30 wt% acetone and 20 wt% water and (4) 30 wt% ethanol and 20 wt% water. The mixtures were placed in glass wells and evaporated for 30-60 s for acetone-based resins, and 60-120 s for ethanol-based resins. The weight of the comonomer mixtures was measured before and after solvent evaporation. Resin films were prepared for transmission electron microscopy (TEM) after immersion in ammonical silver nitrate. The percentages of solvent and water retained in the comonomer mixtures, and between the acetone and ethanol groups were measured gravimetrically and were statistically compared. In comonomer-organic solvent mixtures, the percentage of solvent retained in acetone and ethanol-based mixtures increased significantly with hydrophilicity of the comonomer blends (P<0.05). In resin-organic solvent-water mixtures, significantly more solvent and water were retained in the ethanol-based mixtures (P<0.0001), when compared to acetone-based mixtures after 60 s of air-drying. TEM revealed residual water being trapped as droplets in resin films containing acetone and water. Water-filled channels were seen along the film periphery of all groups and throughout the entire resin films containing ethanol and water. The addition of water to comonomer-ethanol mixtures results in increased retention of both ethanol and water because both solvents can hydrogen bond to the monomers. © 2005 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/48485
ISSN
2015 Impact Factor: 8.387
2015 SCImago Journal Rankings: 3.565
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYiu, CKYen_HK
dc.contributor.authorPashley, ELen_HK
dc.contributor.authorHiraishi, Nen_HK
dc.contributor.authorKing, NMen_HK
dc.contributor.authorGoracci, Cen_HK
dc.contributor.authorFerrari, Men_HK
dc.contributor.authorCarvalho, RMen_HK
dc.contributor.authorPashley, DHen_HK
dc.contributor.authorTay, FRen_HK
dc.date.accessioned2008-05-22T04:14:46Z-
dc.date.available2008-05-22T04:14:46Z-
dc.date.issued2005en_HK
dc.identifier.citationBiomaterials, 2005, v. 26 n. 34, p. 6863-6872en_HK
dc.identifier.issn0142-9612en_HK
dc.identifier.urihttp://hdl.handle.net/10722/48485-
dc.description.abstractThis study examined the extent of organic solvent and water retention in comonomer blends with different hydrophilicity (Hoy's solubility parameter for hydrogen bonding, δh) after solvent evaporation, and the extent of tracer penetration in polymerised films prepared from these resins. For each comonomer blend, adhesive/solvent mixtures were prepared by addition of (1) 50 wt% acetone, (2) 50 wt% ethanol, (3) 30 wt% acetone and 20 wt% water and (4) 30 wt% ethanol and 20 wt% water. The mixtures were placed in glass wells and evaporated for 30-60 s for acetone-based resins, and 60-120 s for ethanol-based resins. The weight of the comonomer mixtures was measured before and after solvent evaporation. Resin films were prepared for transmission electron microscopy (TEM) after immersion in ammonical silver nitrate. The percentages of solvent and water retained in the comonomer mixtures, and between the acetone and ethanol groups were measured gravimetrically and were statistically compared. In comonomer-organic solvent mixtures, the percentage of solvent retained in acetone and ethanol-based mixtures increased significantly with hydrophilicity of the comonomer blends (P<0.05). In resin-organic solvent-water mixtures, significantly more solvent and water were retained in the ethanol-based mixtures (P<0.0001), when compared to acetone-based mixtures after 60 s of air-drying. TEM revealed residual water being trapped as droplets in resin films containing acetone and water. Water-filled channels were seen along the film periphery of all groups and throughout the entire resin films containing ethanol and water. The addition of water to comonomer-ethanol mixtures results in increased retention of both ethanol and water because both solvents can hydrogen bond to the monomers. © 2005 Elsevier Ltd. All rights reserved.en_HK
dc.format.extent146581 bytes-
dc.format.extent238788 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/biomaterialsen_HK
dc.relation.ispartofBiomaterialsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsBiomaterials. Copyright © Elsevier BV.en_HK
dc.subjectAcetoneen_HK
dc.subjectEthanolen_HK
dc.subjectHydrophilicityen_HK
dc.subjectResinen_HK
dc.subjectSolubility parameteren_HK
dc.titleSolvent and water retention in dental adhesive blends after evaporationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0142-9612&volume=26&issue=34&spage=6863&epage=6872&date=2005&atitle=Solvent+and+water+retention+in+dental+adhesive+films+after+evaporationen_HK
dc.identifier.emailYiu, CKY: ckyyiu@hkucc.hku.hken_HK
dc.identifier.emailKing, NM: hhdbknm@hkucc.hku.hken_HK
dc.identifier.authorityYiu, CKY=rp00018en_HK
dc.identifier.authorityKing, NM=rp00006en_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1016/j.biomaterials.2005.05.011en_HK
dc.identifier.pmid15964621-
dc.identifier.scopuseid_2-s2.0-23244439191en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-23244439191&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume26en_HK
dc.identifier.issue34en_HK
dc.identifier.spage6863en_HK
dc.identifier.epage6872en_HK
dc.identifier.isiWOS:000231348000007-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridYiu, CKY=7007115156en_HK
dc.identifier.scopusauthoridPashley, EL=7004881338en_HK
dc.identifier.scopusauthoridHiraishi, N=8925934400en_HK
dc.identifier.scopusauthoridKing, NM=7201762850en_HK
dc.identifier.scopusauthoridGoracci, C=6603922981en_HK
dc.identifier.scopusauthoridFerrari, M=7401754964en_HK
dc.identifier.scopusauthoridCarvalho, RM=7103357029en_HK
dc.identifier.scopusauthoridPashley, DH=35448600800en_HK
dc.identifier.scopusauthoridTay, FR=7102091962en_HK

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