Приказ основних података о документу

dc.creatorDžunuzović, Jasna V.
dc.creatorPergal, Marija V.
dc.creatorJovanović, Slobodan
dc.creatorVodnik, Vesna
dc.date.accessioned2018-03-01T22:22:47Z
dc.date.accessioned2023-01-26T13:05:56Z
dc.date.available2018-03-01T22:22:47Z
dc.date.available2023-01-26T13:05:56Z
dc.date.issued2011
dc.identifier.issn0367-598X
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/5659
dc.description.abstractA series of six polyurethane (PU) networks was synthesized from Boltorn (R) hydroxy-functional hyperbranched polyester (HBP) of the second pseudo generation as a cross-linking agent, alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4-methylenediphenyl diisocyanate, by two-step polymerization in solution. Each sample of the prepared PUs had different EO-PDMS-EO content. The chemical structure of the synthesized networks was analyzed by FTIR spectroscopy. The influence of the EO-PDMS-EO content and type of the solvent on the swelling behavior of the PUs in 2-propanol and toluene was investigated. During the swelling measurements, a certain amount of sal fractions was extracted from the PUs by solvents. According to the H-1-NMR results, sal fractions were mainly composed of the soluble hyperbranched PU, formed during the polymerization by partial modification of the end hydroxyl groups of HBP with NCO-terminated prepolymer synthesized in the first step of the reaction. Chains of the so reacted prepolymer can then fold back and form cyclic products by reaction of the free -NCO group from the NCO-terminated prepolymer with free -OH group of HBP. As the EO-PDMS-EO content increases the amount of the sol fractions and swelling degree also increased, indicating that networks with lower EO-PDMS-EO content are more cross-linked and have higher solvent resistance.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172062/RS//
dc.rightsopenAccessen
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceHemijska industrijaen
dc.subjectpolyurethaneen
dc.subjecthyperbranched polyesteren
dc.subjectpoly(dimethylsiloxane)en
dc.subjectswelling behavioren
dc.titleSynthesis and swelling behavior of polyurethane networks based on hyperbranched polymeren
dc.typearticleen
dc.rights.licenseBY-NC-ND
dc.citation.epage644
dc.citation.issue6
dc.citation.rankM23
dc.citation.spage637
dc.citation.volume65
dc.identifier.doi10.2298/HEMIND110902071D
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/14879/0367-598X1100071D.pdf
dc.identifier.scopus2-s2.0-84855262565
dc.identifier.wos000302108800002
dc.type.versionpublishedVersion


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Приказ основних података о документу