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Article: Production and evaluation of hydroxyapatite reinforced polysulfone for tissue replacement

TitleProduction and evaluation of hydroxyapatite reinforced polysulfone for tissue replacement
Authors
Issue Date2001
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0957-4530
Citation
Journal Of Materials Science: Materials In Medicine, 2001, v. 12 n. 9, p. 821-826 How to Cite?
AbstractA variety of bioactive composites have been developed for tissue replacement over the last two decades. In this investigation, a new material consisting of hydroxyapatite (HA) and polysulfone (PSU) was produced and evaluated for potential medical applications. The HA/PSU composite containing up to 20 vol% of HA was studied at the initial stage. It was manufactured via a standardized procedure which included drying, blending, compounding and injection/compression molding. Defect-free composite samples (rectangular bars, discs and dumbbell specimens) could be obtained by injection molding. Thick composite plates could be made by compression molding. Both compounded materials and molded parts were assessed using a variety of techniques. It was found through scanning electron microscopy (SEM) that HA particles were well dispersed in the PSU matrix. Thermogravimetric analysis (TGA) verified the amount of HA in the composite. Differential scanning calorimetry (DSC) results indicated that the glass transition temperature (Tg) of the polymer matrix was not affected by the incorporation of HA. Rheological analysis revealed that PSU and the composite exhibited pseudoplastic behavior. For unfilled PSU, its viscosity decreased with an increase in temperature. The viscosity of HA/PSU composite increased with an increase in the HA volume fraction. It was shown through dynamic mechanical analysis (DMA) that the storage modulus of the composite was increased with an increase in HA volume percentage below Tg of the polymer, while tan δ was maintained at nearly the same level. It was established that water uptake reached an equilibrium after 7 days' immersion in distilled water for PSU and HA/PSU composite. After 7 days' immersion in distilled water, the storage modulus of the composite was decreased less than that of PSU. © 2001 Kluwer Academic Publishers.
Persistent Identifierhttp://hdl.handle.net/10722/156569
ISSN
2015 Impact Factor: 2.272
2013 SCImago Journal Rankings: 0.897
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, Men_US
dc.contributor.authorYue, CYen_US
dc.contributor.authorChua, Ben_US
dc.date.accessioned2012-08-08T08:43:01Z-
dc.date.available2012-08-08T08:43:01Z-
dc.date.issued2001en_US
dc.identifier.citationJournal Of Materials Science: Materials In Medicine, 2001, v. 12 n. 9, p. 821-826en_US
dc.identifier.issn0957-4530en_US
dc.identifier.urihttp://hdl.handle.net/10722/156569-
dc.description.abstractA variety of bioactive composites have been developed for tissue replacement over the last two decades. In this investigation, a new material consisting of hydroxyapatite (HA) and polysulfone (PSU) was produced and evaluated for potential medical applications. The HA/PSU composite containing up to 20 vol% of HA was studied at the initial stage. It was manufactured via a standardized procedure which included drying, blending, compounding and injection/compression molding. Defect-free composite samples (rectangular bars, discs and dumbbell specimens) could be obtained by injection molding. Thick composite plates could be made by compression molding. Both compounded materials and molded parts were assessed using a variety of techniques. It was found through scanning electron microscopy (SEM) that HA particles were well dispersed in the PSU matrix. Thermogravimetric analysis (TGA) verified the amount of HA in the composite. Differential scanning calorimetry (DSC) results indicated that the glass transition temperature (Tg) of the polymer matrix was not affected by the incorporation of HA. Rheological analysis revealed that PSU and the composite exhibited pseudoplastic behavior. For unfilled PSU, its viscosity decreased with an increase in temperature. The viscosity of HA/PSU composite increased with an increase in the HA volume fraction. It was shown through dynamic mechanical analysis (DMA) that the storage modulus of the composite was increased with an increase in HA volume percentage below Tg of the polymer, while tan δ was maintained at nearly the same level. It was established that water uptake reached an equilibrium after 7 days' immersion in distilled water for PSU and HA/PSU composite. After 7 days' immersion in distilled water, the storage modulus of the composite was decreased less than that of PSU. © 2001 Kluwer Academic Publishers.en_US
dc.languageengen_US
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0957-4530en_US
dc.relation.ispartofJournal of Materials Science: Materials in Medicineen_US
dc.titleProduction and evaluation of hydroxyapatite reinforced polysulfone for tissue replacementen_US
dc.typeArticleen_US
dc.identifier.emailWang, M:memwang@hku.hken_US
dc.identifier.authorityWang, M=rp00185en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1023/A:1017933220894en_US
dc.identifier.scopuseid_2-s2.0-0034777369en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034777369&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume12en_US
dc.identifier.issue9en_US
dc.identifier.spage821en_US
dc.identifier.epage826en_US
dc.identifier.isiWOS:000170954700012-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridWang, M=15749714100en_US
dc.identifier.scopusauthoridYue, CY=7102350337en_US
dc.identifier.scopusauthoridChua, B=7005505783en_US

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