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dc.contributor.authorSarıer, Nihal
dc.contributor.authorArat, Refik
dc.contributor.authorMenceloğlu, Yusuf
dc.contributor.authorÖnder Karaoğlu, Emel
dc.contributor.authorBoz, Ezgi Ceren
dc.contributor.authorOğuz, Oğuzhan
dc.date.accessioned2018-07-17T11:00:27Z
dc.date.available2018-07-17T11:00:27Z
dc.date.issued2016-11-10
dc.identifier.issn0040-6031
dc.identifier.other1872-762X
dc.identifier.urihttps://doi.org/10.1016/j.tca.2016.10.002
dc.identifier.urihttps://hdl.handle.net/11413/2147
dc.description.abstractThis paper deals with the synthesis of poly(ethylene glycol) (PEG) grafted poly(acrylo nitrile) (PAN) copolymers as novel solid-solid phase change materials via two step free radical polymerization reaction. The structural and thermal characterizations of the synthesized copolymers, namely PEG1500-g-PAN, PEG2000-g-PAN, PEG4000-g-PAN, PEG10000-g-PAN and PEG35000-g-PAN, were performed by Fourier transform infrared spectroscopy, Nuclear magnetic resonance spectrometry, differential scanning calorimetry and thermogravimetry. They were thermally stable and had the capability of absorbing and releasing great amount of heat ranging between 70 and 126 Jg(-1) at the temperature interval of 40-65 degrees C during heating and successive cooling cycles. To transform the PEG-g-PAN copolymers into the assemblies appropriate for thermal energy storage (TES) systems, thermo-regulating PEG-g-PAN nanowebs were also produced by means of coaxial electrospinning. The SEM images of PEG-g-PAN nanowebs displayed that they were all composed of hollow cylindrical ultrafine fibers with the average diameters ranging in 175-277 nm. During the differential scanning calorimetry measurements, those nanowebs demonstrated repeatable solid-solid phase change with the heat storage capacities varying between 35 and 75 Jg-1 at the same temperature interval with the corresponding PEG-g-PAN copolymers. The PEG-g-PAN copolymers and their electrospun nanowebs can be promising TES materials and can have convenient industrial applications. (C) 2016 Elsevier B.V. All rights reserved.tr_TR
dc.language.isoen_UStr_TR
dc.publisherElsevier Science Bv, Po Box 211, 1000 AE Amsterdam, Netherlandstr_TR
dc.relationThermochimica Actatr_TR
dc.subjectPCMtr_TR
dc.subjectPEGtr_TR
dc.subjectPANtr_TR
dc.subjectGraftingtr_TR
dc.subjectElectrospinningtr_TR
dc.subjectDSCtr_TR
dc.titleProduction of PEG grafted PAN copolymers and their electrospun nanowebs as novel thermal energy storage materialstr_TR
dc.typeArticletr_TR
dc.contributor.authorID114920tr_TR
dc.contributor.authorID10598tr_TR
dc.contributor.authorID198107tr_TR


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