Synthesis and thermal properties of polystyrene graft PEG copolymers as new kinds of solid solid phase change materials for thermal energy storage     
Yazarlar (3)
Ahmet Sarı
Karadeniz Teknik Üniversitesi, Türkiye
Prof. Dr. Cemil ALKAN Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Doç. Dr. Alper BİÇER Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Materials Chemistry and Physics
Dergi ISSN 0254-0584 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 03-2012
Cilt No 133
Sayı 1
Sayfalar 87 / 94
DOI Numarası 10.1016/j.matchemphys.2011.12.056
Özet
A series of polystyrene-graft-PEG 6000 copolymers were synthesized as new kinds of polymeric solid-solid phase change materials (SSPCMs). The synthesized SSPCMs storage latent heat as the soft segments PEG 6000 of the copolymers transform from crystalline phase to amorphous phase and therefore they can keep its solid state during the phase transition processing. The graft copolymerization reaction between polystyrene and PEG was verified by Fourier transform infrared (FT-IR) and 1H NMR spectroscopy techniques. The morphology of the synthesized SSPCMs was characterized by polarization optical microscopy (POM). Thermal energy storage properties, thermal reliability and thermal stability of the synthesized SSPCMs were investigated by differential scanning calorimetry (DSC) and thermogravimetric (TG) analysis methods. The DSC results showed that the synthesized SSPCMs had typical solid-solid phase transition temperatures in the range of 55-58 °C and high latent heat enthalpy in the range of 116-174 J g -1. The TG analysis findings showed that the synthesized SSPCMs had high thermal durability above their working temperatures. Also, thermal conductivity measurements indicated that the synthesized PCMs had higher thermal conductivity compared to that of polystyrene. The synthesized polystyrene-graft-PEG 6000 copolymers as new kinds of SSPCMs could be used for thermal energy storage. © 2011 Elsevier B.V.
Anahtar Kelimeler
Chemical synthesis | Differential scanning calorimetry (DSC) | Polymers | Thermal properties