Prikaz osnovnih podataka o dokumentu

dc.creatorAntić, Vesna
dc.creatorAntić, Mališa
dc.creatorGovedarica, Milutin
dc.creatorDvornić, Petar R.
dc.date.accessioned2021-02-25T10:36:50Z
dc.date.available2021-02-25T10:36:50Z
dc.date.issued2007
dc.identifier.issn0887-624X
dc.identifier.issn1099-0518
dc.identifier.urihttps://cer.ihtm.bg.ac.rs/handle/123456789/4263
dc.description.abstractThe kinetics of the formation of poly(carbosiloxane), as well as of alkylsubstituted poly(siloxane), by Karstedt's catalyst catalyzed hydrosilylation were investigated. Linear poly(carbosiloxane), poly[(1,1,3,3-tetramethyldisiloxanyl)ethylene], (PTMDSE), was obtained by hydrosilylation of 1,3-divinyltetramethyldisiloxane (DVTMDS) and 1,1,3,3-tetramethyldisiloxane (TMDS), while alkyl-substituted poly(siloxane), poly(methyldecylsiloxane), (PMDS), was synthesized by hydrosilylation of poly(methylhydrosiloxane) (PMHS) and 1-decene. To investigate the kinetics of PTMDSE formation, two series of experiments were performed at reaction temperatures ranging from 25 to 56°C and with catalyst concentrations ranging from 7.0 × 10-6 to 3.1 × 10-5 mol Pt/mol CH=CH2. A series of experiments was performed at reaction temperatures ranging from 28 to 48°C, with catalyst concentrations of 7.0 × 10-6 mol of Pt per mol of CH=CH2, when kinetics of PMDS formation was investigated. All reactions were carried out in bulk, with equimolar amounts of the reacting Si-H and CH=CH2 groups. The course of the reactions was monitored by following the disappearance of the Si-H bands using quantitative infrared spectroscopy. The results obtained showed typical first order kinetics for the PTMDSE formation, consistent with the proposed reaction mechanism. In the case of PMDS an induction period occurred at lower reaction temperatures, but disappeared at 44°C and the rate of Si-H conversion also started to follow the first-order kinetics.sr
dc.language.isoensr
dc.publisherWiley-Blackwellsr
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142023/RS//sr
dc.rightsrestrictedAccesssr
dc.sourceJournal of Polymer Science, Part A: Polymer Chemistrysr
dc.subjectActivation energysr
dc.subjectHydrosilylationsr
dc.subjectInfrared spectroscopysr
dc.subjectKarstedt's catalystsr
dc.subjectKineticssr
dc.subjectPoly(methyldecylsiloxane)sr
dc.subjectPoly[(1,1,3,3-tetramethyldisiloxanyl)ethylene]sr
dc.titleKinetics and mechanism of the formation of poly[(1,1,3,3- tetramethyldisiloxanyl)ethylene] and poly(methyldecylsiloxane) by hydrosilylationsr
dc.typearticlesr
dc.rights.licenseARRsr
dcterms.abstractAнтић, Весна; Aнтић, Малиша П.; Говедарица, Милутин; Дворнић, Петар Р.;
dc.citation.volume45
dc.citation.issue11
dc.citation.spage2246
dc.citation.epage2258
dc.citation.rankaM21
dc.identifier.doi10.1002/pola.21992
dc.identifier.scopus2-s2.0-34249792076
dc.identifier.wos000246459200018
dc.type.versionpublishedVersionsr


Dokumenti

Thumbnail

Ovaj dokument se pojavljuje u sledećim kolekcijama

Prikaz osnovnih podataka o dokumentu