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

作　　者：Si-Yang Mu Jing Guo Yu-Mei Gong Sen Zhang Yue Yu 

机构地区：[1]School of Textile and Material Engineering, Dalian Polytechnic University [2]Liaoning Engineering Technology Research Centre of Function Fiber and Its Composites

出　　处：《Chinese Chemical Letters》2015年第11期1364-1366,共3页中国化学快报（英文版）

基　　金：Financial support of this work is provided by National Natural Science Foundation of China(No.51373027);Education Department of General Item of China(No.LR2012017)

摘　　要：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 stability was evaluated by a thermal gravity analysis （TGA）, and the initial decomposition temperature （Td） of SAN-g-PEG is 350 ℃, which proves that the SAN-g-PEG possessed good thermal stabilitv.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 stability was evaluated by a thermal gravity analysis （TGA）, and the initial decomposition temperature （Td） of SAN-g-PEG is 350 ℃, which proves that the SAN-g-PEG possessed good thermal stabilitv.

关 键 词：Phase change materialEnergy storage and conversionThermal propertiesPolyethylene glycol 

分 类 号：TQ317[化学工程—高聚物工业] TB34[一般工业技术—材料科学与工程]