Preparation of microencapsulated phase-change materials (MCPCMs) by means of interfacial polycondensation.
Microcapsules for energy storage and/or heat transfer applications containing phase-change materials (PCMs-including n-pentadecane, n-eicosane and a paraffin wax) were successfully produced by emulsifying the PCMs as small droplets in an aqueous, water-soluble urea-formaldehyde pre-polymer solution substantially free of emulsifier while polymerizing the pre-polymer at the interface by acid-catalyst. The core/shell structured microcapsules were also characterized with size distribution analysis, scanning electron microscopy, FTIR spectrometry and differential scanning calorimetry.
Tseng
Y-H
YH
National Cheng Kung University, Tainan, Taiwan, ROC.
Fang
M-H
MH
Tsai
P-S
PS
Yang
Y-M
YM
D000473:Alkanes; D002214:Capsules; D004339:Drug Compounding / Q000379:methods*; D045703:Emulsifying Agents; D004735:Energy Transfer; D005557:Formaldehyde; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning / Q000379:methods; D010232:Paraffin; D010316:Particle Size; D011108:Polymers; D012597:Sclerosing Solutions; D014508:Urea; D014885:Waxes
D000473:Alkanes; D002214:Capsules; D045703:Emulsifying Agents; D011108:Polymers; D012597:Sclerosing Solutions; D014885:Waxes; C033245:pentadecane; D005557:Formaldehyde; C050821:eicosane; C028278:urea formaldehyde foam; D010232:Paraffin; D014508:Urea