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Designing Coconut Oil Encapsulated Poly(stearyl methacrylate‐co‐hydroxylethyl metacrylate) Based Microcapsule for Phase Change Materials
Author(s) -
Oktay Burcu,
Baştürk Emre,
Kahraman Memet Vezir,
Apohan Nilhan Kayaman
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201900340
Subject(s) - methacrylate , materials science , polymerization , chemical engineering , curing (chemistry) , polymer chemistry , thermal stability , phase change material , methyl methacrylate , coconut oil , radical polymerization , composite material , thermal , polymer , chemistry , food science , engineering , physics , meteorology
Phase change material (PCM) is an effective energy storage application, which has a relatively low cost. In this study, bio‐based PCMs were prepared by using two techniques: encapsulation and UV‐curing. Encapsulated–PCM was synthesized by suspension polymerization with stearyl methacrylate (SMA) and hydroxyethyl methacrylate (HEMA). In encapsulation process, the microcapsules were prepared from poly(stearyl methacrylate‐co‐hydroxyethyl methacrylate) shell and coconut oil (CO) core. UV‐cured form stable PCM was also prepared by radical addition polymerization of stearyl methacrylate, hydroxyethyl methacrylate and coconut oil. In UV‐curing process as in the second process, coconut oil was trapped within the polymeric network without covalent bonding. Thermal storage feature of encapsulated‐PCM and UV‐cured form stable PCM was investigated. The melting enthalpy of encapsulated‐PCM is 119 J/g, which is higher than both the melting enthalpy of pure coconut oil (106 J/g) and UV‐cured form stable PCM (47 J/g). Moreover, thermal degradation results of PCMs show that the maximum thermal decomposition temperature of encapsulated‐PCM increased compared with UV‐cured from stable PCM.