Citation: Si-Yang Mu, Jing Guo, Yu-Mei Gong, Sen Zhang, Yue Yu. Synthesis and thermal properties of poly(styrene-co-acrylonitrile)- graft-polyethylene glycol copolymers as novel solid-solid phase change materials for thermal energy storage[J]. Chinese Chemical Letters, ;2015, 26(11): 1364-1366. doi: 10.1016/j.cclet.2015.07.013 shu

Synthesis and thermal properties of poly(styrene-co-acrylonitrile)- graft-polyethylene glycol copolymers as novel solid-solid phase change materials for thermal energy storage

Si-Yang Mu ^a ,
Jing Guo ^a,b,, ,
Yu-Mei Gong ^a,b ,
Sen Zhang ^a,b ,
Yue Yu ^a,b

1.
a School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China;
2.
b Liaoning Engineering Technology Research Centre of Function Fiber and Its Composites, Dalian 116034, China

Corresponding author: Jing Guo,
Received Date: 28 May 2015
Available Online: 26 June 2015

A novel poly(styrene-co-acrylonitrile)-graft-polyethylene glycol (SAN-g-PEG) copolymer was synthesized as new solid-solid phase change materials (SSPCMs) by grafting PEG to the main chain of poly(styrene-co-acrylonitrile). The chemical structure of the SAN-g-PEG was confirmed by the Fourier transform infrared (FT-IR) and proton nuclear magnetic resonance (¹H NMR) spectroscopy techniques. The thermal energy storage properties and the storage durability of the SAN-g-PEG were investigated by differential scanning calorimetry (DSC). The SAN-g-PEG was endowed with the solid- solid phase transition temperatures within the range of 23-36 ℃ and the latent heat enthalpy ranged from 66.8 kJ/kg to 68.3 kJ/kg. Thermal cycling tests revealed that the SAN-g-PEG kept great heat storage durability after 1000 thermal cycles. The thermal stabilitywas evaluated by a thermal gravity analysis (TGA), and the initial decomposition temperature (T_d) of SAN-g-PEG is 350 ℃, which proves that the SAN-g-PEG possessed good thermal stability.
- Phase change material
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沈阳化工大学材料科学与工程学院沈阳 110142