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- W2348884388 abstract "Diethylene glycol octadecyl ether methacrylate( DEGOEMA) as a phase change material was prepared by means of acrylation of diethylene glycol octadecyl ether sodium(C18E2Na) with methacryloyl chloride.And then poly( diethylene glycol octadecyl ether methacrylate)( PDEGOEMA) was synthesized by free radical polymerization.The molecular weight and its distribution were characterized using gel permeation chromatography(GPC).The structure,phase change properties,thermal stablility,crystal structure of the monomer and the comb-like polymer were characterized using Fourier transform infrared spectroscopy( FTIR), hydrogen nuclear magnetic resonance spectrum(1H NMR),differential scanning calorimetry(DSC),thermogravimetric analysis( TG) and wide-angle X-ray diffraction( XRD).The results show that the novel monomer and polymers are excellent phase change materials with steady structure,high crystallinity,higher heat enthalpy and thermal stablility.Both the melting and crystallizing enthalpies of PDEGOEMA are 73 J/g.The onset melting temperature and crystallizing temperature are 41 and 36 ℃,respectively.It is thermal stable below 314 ℃.These properties indicate that this phase change material can be widely used as a polymeric phase change material in high processing and using temperature environments." @default.
- W2348884388 created "2016-06-24" @default.
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- W2348884388 date "2014-01-01" @default.
- W2348884388 modified "2023-09-23" @default.
- W2348884388 title "Preparation and Characterization of Diethylene Glycol Octadecyl Ether Methacrylate and Its Polymer" @default.
- W2348884388 hasPublicationYear "2014" @default.
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