Publication: Facile application of terahertz spectroscopy in UV-coated and phase change material loaded MPS
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Date
2023-05-01
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Abstract
In this study, capability of Terahertz (THz) spectroscopy for determination of thermal properties of phase change materials (PCM) in an acrylated polyurethane coating investigated. Spherical shaped mesoporous silica materials (MPSs) are prepared
as a template for stearic acid (SA). SA was impregnated into MPSs for investigate
its PCM properties. Surface of MPSs was modifed with 3-(Trimethoxysilyl)propyl
methacrylate (MEMO) to add acrylate functionality to form covalently bond to polyurethane (PU)-based composite UV matrix to avert leakage problem. Finally, this
resin was photopolymerized and its change in thermal properties was determined
by both conventional Diferential Scanning Calorimetry (DSC) and THz. DSC
results show that the heating process phase change enthalpy is measured between
20.83 J/g and 136.80 J/g, and the freezing process phase change enthalpy is found
between 13.55 J/g and 181.13 J/g by DSC. The thermal properties of phase changing
behavior of the sample were also analyzed by Terahertz Time Domain Spectroscopy
(THz-TDS). Besides the phase changes THz spectroscopy has shown the temperature dependent variation in the host matrix, also fnal PCM sample. Comparison of
the data suggest that THz Spectroscopy is a fairly strong technique for characterization of phase changing materials even in very complex resin environment and it is
a strong complementary technique especially following the temperature dependent
properties close to room temperature.
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Temel Bilimler, Mühendislik ve Teknoloji, Natural Sciences, Engineering and Technology, Mühendislik, Bilişim ve Teknoloji (ENG), Temel Bilimler (SCI), Doğa Bilimleri Genel, ÇOK DİSİPLİNLİ BİLİMLER, Engineering, Computing & Technology (ENG), Natural Sciences (SCI), NATURAL SCIENCES, GENERAL, MULTIDISCIPLINARY SCIENCES, Multidisipliner, Multidisciplinary, Mesoporous material, Diferential scanning calorimetry (DSC), Terahertz spectroscopy, Photopolymerization, Phase change materials
Citation
Aytan E., Aytekin Y. S., Aytan T. A., Esenturk O., Kahraman M. V., "Facile application of terahertz spectroscopy in UV-coated and phase change material loaded MPS", POLYMER BULLETIN, cilt.1, sa.1, ss.1-2, 2023