Electrospun Polyethylene Glycol/Polyvinyl Alcohol Composite Nanofibrous Membranes as Shape-Stabilized Solid–Solid Phase Change Materials

2020 ◽  
Vol 2 (3) ◽  
pp. 167-177 ◽  
Author(s):  
Junwen Huang ◽  
Houyong Yu ◽  
Somia Yassin Hussain Abdalkarim ◽  
Jaromir Marek ◽  
Jiri Militky ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Polyvinyl Alcohol ◽  
Phase Change ◽  
Phase Change Materials ◽  
Solid Phase ◽  
Nanofibrous Membranes

Preparation and Characterization of a Novel Polyurethane Solid-Solid Phase Change Materials

2013 ◽  
Vol 785-786 ◽  
pp. 613-617
Author(s):  
Gui Fang Wang ◽  
Dong Ying Li ◽  
Guang Ling Pei
Keyword(s):  
Phase Transition ◽  
Polyethylene Glycol ◽  
Phase Change ◽  
Phase Change Materials ◽  
Solid Phase ◽  
Soft Segment ◽  
Condensation Reaction ◽  
Diphenylmethane Diisocyanate ◽  
Scanning Calorimetry ◽  
Polarization Optical Microscopy

A novel solid-solid phase change materials was synthesized by the two-step condensation reaction of polyethylene glycol (PEG1000), neopentyl glycol (NPG) and 4, 4-diphenylmethane diisocyanate (MDI). Polyethylene glycol (PEG1000) was used as soft segment and 4, 4-diphenylmethane diisocyanate (MDI) as hard segment. The composition, structure and phase change properties were characterized by Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), thermogravimetric analyzer (TGA), polarization optical microscopy (POM) respectively. The results indicated that the PCM appeared typical solid-solid phase transition property and the phase change enthalpy and phase transition temperature reached to 120.45 J/g and 37.32°C, respectively.

Preparation and Performance of Phase Change Materials of PEGA-g-CEA

2015 ◽  
Vol 723 ◽  
pp. 656-659
Author(s):  
Jing Guo ◽  
Chun Fang Yu ◽  
Si Yang Mu ◽  
Hong Zhang ◽  
Yu Mei Gong
Keyword(s):  
Polyethylene Glycol ◽  
Phase Change ◽  
Phase Change Materials ◽  
Graft Copolymerization ◽  
Solid Phase ◽  
Side Chain ◽  
Composition And Structure ◽  
Infrared Spectrometer ◽  
And Performance ◽  
Chain Type

Polyethylene glycol acrylate-grfat-Cellulose-acrylate (PEGA-g-CEA) has been synthesized as side-chain-type solid-solid phase change materials for thermal energy storange through graft copolymerization. The composition and structure of the grafts and cellulose, phase transition properties and morphology of grafts were investigated by Fourier transform infrared spectrometer (FTIR), differential scaanning calorimentry (DSC) and optical microscopy. The results show that the polyethylene glycol (PEG) successfully grafted onto the cellulose macromolecule, and the solid-solid phase change materials with a certain phase transformation ability were obtained through this experiment.

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