Production of PEG grafted PAN copolymers and their electrospun nanowebs as novel thermal energy storage materials

Warning The system is temporarily closed to updates for reporting purpose.

Sarıer, Nihal and Arat, Refik and Menceloğlu, Yusuf Z. and Önder, Emel and Boz, Ezgi Ceren and Oğuz, Oğuzhan (2016) Production of PEG grafted PAN copolymers and their electrospun nanowebs as novel thermal energy storage materials. Thermochimica Acta, 643 . pp. 83-93. ISSN 0040-6031 (Print) 1872-762X (Online)

[thumbnail of This is a RoMEO green journal -- author can archive pre-print (ie pre-refereeing)] PDF (This is a RoMEO green journal -- author can archive pre-print (ie pre-refereeing))
Production_of_PEG_grafted_PAN_copolymers_and_Their_Electrospun_Nanowebs_as_Novel_Thermal_Energy_Storage_Materials.pdf

Download (2MB)

Abstract

This 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 oC 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.
Item Type: Article
Uncontrolled Keywords: PCM; PEG; PAN; Grafting; Electrospinning; DSC
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Yusuf Z. Menceloğlu
Date Deposited: 10 Nov 2016 10:49
Last Modified: 26 Apr 2022 09:35
URI: https://research.sabanciuniv.edu/id/eprint/29951

Actions (login required)

View Item
View Item