Solution phase method for making phase change materials
AssigneeKing Fahd University of Petroleum and Minerals
InventorsMd. Hasan Zahir, Aasif Helal, Abbas S. Hakeem
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Abstract
A method to form a phase change material (PCM). The method includes preparing a polymer solution by mixing an amount of a polymer in a solvent and mixing the polymer solution with an UiO-66 metal-organic framework (MOF) to form a composite. The polymer is a polyethylene glycol (PEG). The method further includes subjecting the composite to ultrasonic agitation and evaporating the solvent from the composite to form the PCM. After the evaporation of the solvent, particles of the PCM exhibit rounded octahedral structures.
Claims15
A solution method for making a phase change material, comprising:
- ultrasonically agitating a mixture comprising polyethylene glycol (PEG), an alcoholic solvent and an UiO-66 metal-organic framework (MOF) to form a composite;
- evaporating the alcoholic solvent from the composite to form the phase change material (PCM), wherein a weight ratio of PEG:UiO-66 MOF in the PCM is 0.5:0.2 to 1.0:0.2,
- wherein the PCM has first particles and second particles,
- wherein the first particles comprise PEG and the UiO-66 MOF and are smaller than the second particles,
- wherein the second particles comprise only the UiO-66 MOF and have a longest dimension of 200 nm to 500 nm,
- wherein the first particles and second particles have a rounded octahedral shape, and
- wherein the second particles are connected through a network of the first particles.
Dependencies are inferred from the claim text.