Designing behenic acid microcapsules as novel phase change material for thermal energy storage applications at medium temperature. (23rd January 2020)

• Record Type: Journal Article
• Authors: Şahan, Nurten; Paksoy, Halime
• Is Part Of: International journal of energy research. Volume 44:Number 5(2020)
• Page Start: 3922
• Page End: 3933
• Publication Date: 2020-01-23
• Subjects: behenic acid -- microcapsules -- PCMs -- TES; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.5193
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: Fatty acids are bio‐based materials that can be used as phase change materials (PCMs). Microencapsulation of low carbon number fatty acids for mainly building applications have been realized in previous studies. In this study, behenic acid (BA), a fatty acid with medium melting range (65°C‐85°C), has been microencapsulated for the first time. PMMA and its three copolymers were used as shell material of these novel encapsulated PCMs prepared by emulsion polymerization technique. The influences of using different comonomers in shell materials on the thermal, morphological, and chemical properties were investigated. Melting phase change temperature ranges were found as 65°C to 85°C for all capsule candidates. Capsules had uniform spherical geometry with size ranges under 500 nm. The capsules are suggested as novel PCM candidates in this temperature range that has potential applications in industrial waste heat, electronics, solar residential heating, lithium‐ion batteries, and automotive application. Abstract : Schematic diagram and reaction for emulsion polymerization technique which is used in encapsulation of organic PCMs.