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Influence of the HAp ratio on the thermodynamic and kinetic parameters of PDMS/HAp composites cross-linking
dc.creator | Jovanović, Jelena | |
dc.creator | Adnađević, Borivoj | |
dc.creator | Suljovrujić, Edin H. | |
dc.creator | Ignjatović, Nenad | |
dc.creator | Uskoković, Dragan | |
dc.date.accessioned | 2018-03-03T13:56:58Z | |
dc.date.accessioned | 2018-05-08T08:39:32Z | |
dc.date.available | 2018-03-03T13:56:58Z | |
dc.date.available | 2018-05-08T08:39:32Z | |
dc.date.issued | 2003 | |
dc.identifier.issn | 0255-5476 (print) | |
dc.identifier.uri | https://dais.sanu.ac.rs/123456789/2746 | |
dc.description.abstract | Injectable and gas-permeable composite cements, polydimethylsiloxane/hydroxyapatite (PDMS/HAp), were synthesized using bi-component polysiloxane precursors (RTV-A and RTV-B), which react by hydrosilylation, and different mass fractions of hydroxyapatite (HAp) having particle size of about 100 nm. The effect of HAp mass fraction (0-60%) on the thermodynamic and kinetic parameters of polysiloxanes cross-linking, i.e., PDMS/HAp composite preparation, was investigated by means of differential scanning calorimetry (DSC). It was determined that small mass fractions of HAp (up to about 10%) cause a decrease in temperature (T-max), and activation energy (E-a) of the investigated cross-linking process, while the total heat of the process (H-tot) increases. For the HAp mass fraction greater than 20%, an opposite effect was observed. The temperature and the time interval of cross-linking increase rapidly for smaller, but slowly, almost insignificantly, for larger HAp mass fractions. The determined order (n) of the reaction shows a trend similar to H-tot, but due to small variations found, this does not merit discussion. | en |
dc.rights | restrictedAccess | en |
dc.source | Contemporary Studies in Advanced Materials and Processes, 4th Yugoslav-Materials-Research-Society Conference, Sep 10-14, 2001, Herceg Novi, Yugoslavia | en |
dc.subject | activation energy | en |
dc.subject | differential scanning calorimetry | en |
dc.subject | mass fraction of hydroxyapatite | en |
dc.subject | PDMS/HAp composites | en |
dc.subject | rate of cross-linking | en |
dc.title | Influence of the HAp ratio on the thermodynamic and kinetic parameters of PDMS/HAp composites cross-linking | en |
dc.type | conferenceObject | en |
dc.rights.license | ARR | |
dcterms.abstract | Aднадјевић, Боривој; Игњатовић, Ненад; Суљоврујић, Един Х.; Ускоковић, Драган; Јовановић, Јелена; | |
dc.citation.spage | 263 | |
dc.citation.epage | 268 | |
dc.identifier.wos | 000180730700046 | |
dc.identifier.doi | 10.4028/www.scientific.net/MSF.413.263 | |
dc.description.other | Materials Science Forum, Volume 413 | en |
dc.type.version | publishedVersion | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_dais_2746 |