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dc.creatorDžunuzović, Jasna
dc.creatorStefanović, Ivan
dc.creatorDžunuzović, Enis S.
dc.creatorDapčević, Aleksandra
dc.creatorŠešlija, Sanja
dc.creatorBalanč, Bojana D.
dc.creatorLamae, Giuseppe C.
dc.date.accessioned2019-12-09T22:41:33Z
dc.date.available2019-12-09T22:41:33Z
dc.date.issued2019
dc.identifier.issn03009440
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/3220
dc.description.abstractA series of environmentally friendly polyurethane (PU) networks based on polycaprolactone as soft segment (SS) and Boltorn® aliphatic hyperbranched polyester of the second pseudo generation as crosslinking agent was prepared by a two-step polymerization in solution. The chemical structure of the PU networks was analyzed by Fourier transform infrared spectroscopy, while XRD analysis revealed that these samples are amorphous. Swelling measurements, water absorption study, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, mechanical tests and scanning electron microscope revealed that, swelling behavior, hydrophobicity, thermal and mechanical features and morphology of PU networks show clear dependence on polycaprolactone content. The increase of the SS content induced appearance of the microphase separated morphology, increase of thermal stability, elongation at break, hydrophobicity and swelling ability in tetrahydrofuran and toluene, but at the same time it is responsible for the decrease of crosslinking density, glass transition temperatures, rigidity, tensile strength and Young’s modulus of PU networks. Scanning electron microscope images of the fracture surfaces of PU networks show that their surface is rough, irregular, with flake-like structure, where size of flakes increases with increasing SS content. These results indicate that by choosing adequate SS content, PU coatings with diverse features based on polycaprolactone and Boltorn® aliphatic hyperbranched polyester can be designed for appropriate and desired applicationsr
dc.language.isoensr
dc.publisherElseviersr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172062/RS//sr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45007/RS//sr
dc.rightsrestrictedAccesssr
dc.sourceProgress in Organic Coatingssr
dc.subjectMorphologysr
dc.subjectMechanical propertiessr
dc.subjectThermal propertiessr
dc.subjectHyperbranched polyesterssr
dc.subjectPolycaprolactonesr
dc.subjectPolyurethane networkssr
dc.titlePolyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigationsr
dc.typearticlesr
dc.rights.licenseARRsr
dcterms.abstractШешлија, Сања; Джунузовић, Јасна; Ламае, Гиусеппе Ц.; Баланч, Бојана Д.; Дапчевић, Aлександра; Джунузовић, Енис С.; Стефановић, Иван;
dc.citation.issue137
dc.citation.spage105305
dc.citation.rankaM21~
dc.identifier.doi10.1016/j.porgcoat.2019.105305
dc.identifier.scopus2-s2.0-85072222298
dc.identifier.wos000500944400030
dc.type.versionpublishedVersionsr


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