Preparation of phase change materials microcapsules by using PMMA network‐silica hybrid shell via sol‐gel process

Citations Over TimeTop 10% of 2009 papers

Abstract

Abstract Encapsulation of phase change materials (PCM) using a poly(methyl methacrylate) network‐silica hybrid as the shell material has been developed. n ‐Octadecane melted at 28°C was used as PCM. Based on the suspension polymerization process, the microcapsules were prepared successfully by mixing and by the reaction of ethylene glycol dimethacrylate with precopolymer solution with tetraethoxysilane (TEOS), whose resultant microcapsules had higher latent heat (Δ H = 151 J/g) than those without TEOS (Δ H = 88.3 J/g). The average size of the PCM microcapsules was about 10 μm. The silica content, n ‐octadecane content, and latent heat of microcapsules were changed with varying ageing conditions, ageing time, and temperature. The highest amount of latent heat (Δ H = 178.9 J/g) and n ‐octadecane content (73.3%) of the microcapsule were obtained when the inorganic/organic ratio of the microcapsule was 5%. It was difficult to increase n ‐octadecane content (74% to 55.7–67.9%) and latent heat (180.5 J/g to 135.9–165.7 J/g) of the microcapsules by introducing different functional groups of coupling agents. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

Related Papers

• → Experimental studies on the enhancement in discharging characteristics of phase change material with steatite nanoparticles(2023)11 cited
• → A molecular dynamics study of nano-encapsulated phase change material slurry(2016)22 cited
• → Shape-Stabilized Phase Change Materials: Preparation and Properties of Frozen Gels from UHMWPE and n-Octadecane for Latent Heat Storage(2012)1 cited
• Thermal performance of high melting points paraffin emulsions for latent heat transportation(2012)