Influence of water domain formed in hexadecane core inside cross-linked capsule particle on thermal properties for heat storage application

Preparation of polydivinylbenzene/natural rubber capsule encapsulating octadecane: Influence of natural rubber molecular weight and content

“…DSC thermograms of encap- sulated OD in PDVB capsules (Figure 7) showed that the H m (153.0 J/g-OD) and H c (151.8 J/g-OD) of encapsulated OD were lower than those of the bulk OD (241.7 and 247.0 J/g of H m 0 and H c 0 , respectively). This phenomenon is quite general for the encapsulation as also observed by other researchers [3,5,6,[9][10][11][15][16][17][18][19]. The possible reason of the reduction of H m and H c of encapsulated heat storage materials is that the phase separation between the polymer shell and heat storage material core was incomplete as in the case of PDVB/HD microcapsules prepared by suspension polymerization [11].…”

“…Polystyrene (PS) microcapsules containing paraffin wax were synthesized by suspension like polymerization [8]. The Self-assembling of Phase Separated Polymer (SaPSeP) method is one of many methods applied for the encapsulation of them [9][10][11][12]. The polymer chains formed during polymerization in the monomer droplet are diffused and trapped near the interface based on surface coagulation and gradually piled at the inner interface resulting in a polymer shell.…”

Latent Heat Enhancement of Paraffin Wax in Poly(divinylbenzene-co-methyl methacrylate) Microcapsule

“…In our previous works, the core-shell particles were formed for PMMA [31] and PDVB [18][19][20][21]26,28,31,32] shells whereas most of the obtained PS [31] microcapsule were broken after washing with 2-propanol. The capsule shapes were quite different between PDVB/RT27 and PMMA/RT27 where the nonspherical with a dent and multiple dents were observed for PDVB and PMMA shells, respectively.…”

“…We have successfully prepared microencapsulated PDVB/OD [19][20][21] by the microsuspension polymerization. The core-shell capsules were observed with optical and transmission electron microscopes of the cross-section capsule [20] according with the other reports [25,26,28,29] . However, it was reported that incomplete phase separation of PDVB shell and HD core resulted in the reduction of the latent heats.…”

Fabrication and Characterization of MicroPCMs

“…A survey of literature shows that these composites are smart functional materials, such as thermosmart fibers, heat preservation building materials, solar heating materials and anti-icing coating, et al [16][17][18][19]. Although lots of investigations have been carried out, these composites have not yet been explored to a significant extent.…”