File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Nonisothermal melt-crystallization behavior of calcium phosphate/poly(3- hydroxybutyrate-co-3-hydroxyvalerate) nanocomposite microspheres

TitleNonisothermal melt-crystallization behavior of calcium phosphate/poly(3- hydroxybutyrate-co-3-hydroxyvalerate) nanocomposite microspheres
Authors
Issue Date2011
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.4spe.org/periodicals/journals/pes.htm
Citation
Polymer Engineering And Science, 2011, v. 51 n. 8, p. 1580-1591 How to Cite?
AbstractMicrospheres consisting of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) polymer matrix and calcium phosphate (Ca-P) nanoparticles were made using the solid-in-oil-in-water (S/O/W) emulsion solvent evaporation technique. Amorphous Ca-P nanoparticles with the calcium to phosphate ratio of 1.5 were relatively well distributed in microspheres. The nonisothermal crystallization behavior of Ca-P/PHBV nanocomposite with different Ca-P contents (0-20%) was studied through differential scanning calorimetry using different cooling rates. During nonisothermal crystallization, the presence of Ca-P nanoparticles resulted in an increase in crystallization rate and the nucleation activity of the nanocomposite also increased with increasing Ca-P content. Various models were applied to investigate nonisothermal crystallization kinetics. All approaches, except for the Ozawa model, could successfully describe the nonisothermal crystallization behavior of PHBV and Ca-P/PHBV nanocomposite. The effective activation energy for nonisothermal crystallization was calculated using the differential isoconversional method proposed by Friedman. The morphology of PHBV spherulites in nanocomposite was also studied using polarized optical microscopy. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers.
Persistent Identifierhttp://hdl.handle.net/10722/157128
ISSN
2015 Impact Factor: 1.719
2015 SCImago Journal Rankings: 0.560
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Research Grants Council (GRF)HKU 7182/05E
University of Hong Kong (HKU)
Funding Information:

Contract grant sponsor: Hong Kong Research Grants Council (GRF); contract grant number: HKU 7182/05E; contract grant sponsor: University of Hong Kong (HKU).

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorDuan, Ben_US
dc.contributor.authorWang, Men_US
dc.contributor.authorZhou, WYen_US
dc.contributor.authorCheung, WLen_US
dc.date.accessioned2012-08-08T08:45:27Z-
dc.date.available2012-08-08T08:45:27Z-
dc.date.issued2011en_US
dc.identifier.citationPolymer Engineering And Science, 2011, v. 51 n. 8, p. 1580-1591en_US
dc.identifier.issn0032-3888en_US
dc.identifier.urihttp://hdl.handle.net/10722/157128-
dc.description.abstractMicrospheres consisting of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) polymer matrix and calcium phosphate (Ca-P) nanoparticles were made using the solid-in-oil-in-water (S/O/W) emulsion solvent evaporation technique. Amorphous Ca-P nanoparticles with the calcium to phosphate ratio of 1.5 were relatively well distributed in microspheres. The nonisothermal crystallization behavior of Ca-P/PHBV nanocomposite with different Ca-P contents (0-20%) was studied through differential scanning calorimetry using different cooling rates. During nonisothermal crystallization, the presence of Ca-P nanoparticles resulted in an increase in crystallization rate and the nucleation activity of the nanocomposite also increased with increasing Ca-P content. Various models were applied to investigate nonisothermal crystallization kinetics. All approaches, except for the Ozawa model, could successfully describe the nonisothermal crystallization behavior of PHBV and Ca-P/PHBV nanocomposite. The effective activation energy for nonisothermal crystallization was calculated using the differential isoconversional method proposed by Friedman. The morphology of PHBV spherulites in nanocomposite was also studied using polarized optical microscopy. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.4spe.org/periodicals/journals/pes.htmen_US
dc.relation.ispartofPolymer Engineering and Scienceen_US
dc.titleNonisothermal melt-crystallization behavior of calcium phosphate/poly(3- hydroxybutyrate-co-3-hydroxyvalerate) nanocomposite microspheresen_US
dc.typeArticleen_US
dc.identifier.emailWang, M:memwang@hku.hken_US
dc.identifier.emailCheung, WL:wlcheung@hkucc.hku.hken_US
dc.identifier.authorityWang, M=rp00185en_US
dc.identifier.authorityCheung, WL=rp00103en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/pen.21940en_US
dc.identifier.scopuseid_2-s2.0-79960152626en_US
dc.identifier.hkuros207444-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79960152626&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume51en_US
dc.identifier.issue8en_US
dc.identifier.spage1580en_US
dc.identifier.epage1591en_US
dc.identifier.isiWOS:000293129500017-
dc.publisher.placeUnited Statesen_US
dc.relation.projectBioactive and biodegradable composites for bone tissue repair-
dc.identifier.scopusauthoridDuan, B=7005042335en_US
dc.identifier.scopusauthoridWang, M=15749714100en_US
dc.identifier.scopusauthoridZhou, WY=26636766600en_US
dc.identifier.scopusauthoridCheung, WL=7202743084en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats