A novel shape-stabilized PEG/novolac resin by sol–gel polymerization

作者: Mina Nasiri , Ahmad Reza Bahramian , Hamidreza Hadizadeh Raeisi

DOI: 10.1007/S13726-016-0476-Y

关键词: Chemical engineeringDifferential scanning calorimetryMaterials scienceCrystallizationPolymerizationPEG ratioEnthalpyFourier transform infrared spectroscopyCrystallinityPolyethylene glycolComposite material

摘要: In this study, a novel polyethylene glycol (PEG)/novolac shape-stabilized, composite, phase-change material was prepared with various mass fractions of PEG via sol–gel polymerization. The influences content on morphology, crystallinity, enthalpy efficiency and shift melt temperature the materials (super cooling effect) were investigated. Fourier transform infrared spectroscopy indicated no chemical reaction during composite preparation showed O–H bonding intensity increased increase novolac content. Field emission scanning electron microscopy images shape-stabilized trapping chains into colloidal structure even at fraction as low 10 wt%. Differential calorimetry X-ray diffraction techniques revealed well thermal properties samples regarding compared to their bulk forms. Among in work, 15 wt% improved crystallinity neat PEG. This work not only supplied efficient without PCM leakage, but also new systems. system give opportunity have phase change crystallization behavior sample 85 comparison

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