Microencapsulated n-Octadecane with styrene-divinybenzene co-polymer shells

You, Min; Wang, Xuechen; Zhang, Xingxiang; Zhang, Li; Wang, Jianping

doi:10.1007/s10965-010-9390-8

Cited by 60 publications

(23 citation statements)

References 28 publications

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“…It also revealed that it is difficult to achieve encapsulation when core/shell mass ratio is greater than 2.00. You et al [47,48] produced n-Octadecane microcapsules with a styrene (St)-divinybenzene (DVB) copolymer shell and achieved an average diameter of 80μm and latent heat fusion capacity of 126kJ/kg. Thermogravimetric (TG) analysis of the St-DVB shell showed the initial weight-loss temperatures to be above 230 o C thus making it better than MF shell.…”

Section: Suspension Polymerizationmentioning

confidence: 99%

Review of solid–liquid phase change materials and their encapsulation technologies

Darkwa

Kokogiannakis

2015

Renewable and Sustainable Energy Reviews

738

267

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Various types of solid-liquid phase change materials (PCMs) have been reviewed for thermal energy storage applications. The review has shown that organic solid-liquid PCMs have much more advantages and capabilities than inorganic PCMs but do possess low thermal conductivity and density as well as being flammable. Inorganic PCMs possess higher heat storage capacities and conductivities, cheaper and readily available as well as being non-flammable, but do experience supercooling and phase segregation problems during phase change process. The review has also shown that eutectic PCMs have unique advantage since their melting points can be adjusted. In addition, they have relatively high thermal conductivity and density but they possess low latent and specific heat capacities. Encapsulation technologies and shell materials have also been examined and limitations established. The morphology of particles was identified as a key influencing factor on the thermal and chemical stability and the mechanical strength of encapsulated PCMs. In general, in-situ polymerization method appears to offer the best technological approach in terms of encapsulation efficiency and structural integrity of core material. There is however the need for the development of enhancement methods and standardization of testing procedures for microencapsulated PCMs. Abstract: Various types of solid-liquid phase change materials (PCMs) have been reviewed for thermal energy storage applications. The review has shown that organic solid-liquid PCMs have much more advantages and capabilities than inorganic PCMs but do possess low thermal conductivity and density as well as being flammable. Inorganic PCMs possess higher heat storage capacities and conductivities, cheaper and readily available as well as being non-flammable, but do experience supercooling and phase segregation problems during phase change process. The review has also shown that eutectic PCMs have unique advantage since their melting points can be adjusted. In addition they have relatively high thermal conductivity and density but they possess low latent and specific heat capacities. Encapsulation technologies and shell materials have also been examined and limitations established. The morphology of particles were identified as a key influencing factor on the thermal and chemical stability and the mechanical strength of encapsulated PCMs. In general, in-situ polymerization method appears to offer the best technological approach in terms of encapsulation efficiency and structural integrity of core material. There is however the need for the development of enhancement methods and standardization of testing procedures for microencapsulated PCMs.

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Section: Suspension Polymerizationmentioning

confidence: 99%

Review of solid–liquid phase change materials and their encapsulation technologies

Darkwa

Kokogiannakis

2015

Renewable and Sustainable Energy Reviews

738

267

View full text Add to dashboard Cite

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“…The average diameter of the microcapsules was about 80 μm and the heat of fusion was about 126 kJ/kg. In a recent study, they [61] also indicated that the thermal decomposition temperature of microencapsulated n-Octadecane was about 230 °C which was higher than that of MicroC18 using melamine-formaldehyde shell. Microencapsulated n-Octadecane were synthesized by suspension-like polymerization [62], and styrene-1,4-butylene glycol diacrylate copolymer(PSB), styrene-divinylbenzene copolymer(PSD), PSDB, and polydivinylbenzene (PDVB) were used as shell materials, respectively.…”

Section: Suspension-like Polymerizationmentioning

confidence: 95%

Review on microencapsulated phase change materials (MEPCMs): Fabrication, characterization and applications

Zhao

Zhang

2011

Renewable and Sustainable Energy Reviews

418

155

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The use of latent heat storage, microencapsulated phase change materials (MEPCMs), is one of the most efficient ways of storing thermal energy and it has received a growing attention in the past decade. However, there is no complete overview of its utilisation in thermal energy storage systems, and the information is widely spread in the literature. In this paper, a comprehensive review has been carried out for MEPCMs. Four aspects have been the focus of this review: fabrication and characterization of MEPCMs, applications of MEPCMs to the textile and building, fundamental properties of microencapsulated phase change material slurry (MPCS) and application of MPCS to the thermal energy storage system. Over 140 recent publications are referenced in this paper.

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“…In the past decade, a numerous researches of PCMs capsules prepared by suspension polymerization with various kinds of polymer shells and paraffin waxes were reported. Microencapsulations of paraffin waxes with polystyrene (PS) [10,[14][15][16] , poly(styrene-methyl methacrylate) [17] , polydivinylbenzene (PDVB) [18][19][20][21] , poly (styrene-divinylbenzene) [22] , polymethyl methacrylate (PMMA) with different cross-linking agents [23] , and poly(methyl methacrylate-methacrylic acid) [24] were carried out by suspension polymerization. PDVB microencapsulated HD [25,26] and PS microencapsulated commercial wax (Repsol YPF) [27] were also prepared by suspension polymerization utilizing the Shirasu porous glass membrane emulsification method for the preparation of comparatively monodisperse oil droplets.…”

Section: Introductionmentioning

confidence: 99%

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

Namwong

Noppalit

Okubo

et al. 2015

Polymer-Plastics Technology and Engineering

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The preparation of divinylbenzene (DVB)-methyl methacrylate (MMA) copolymer microcapsule encapsulated Rubitherm27 (RT27) P(DVB-co-MMA)/RT27 used as heat storage material by the microsuspension polymerization was studied to improve the latent heats of the encapsulated RT27 with sufficient polymer shell strength. Percent loading of RT27 and DVB:MMA ratio were optimized. The optimal condition was 30% loading of RT27 and 30:70 (% w/w) of DVB:MMA ratio. The nonspherical microcapsules with a dent having core-shell morphology were obtained. The thermal properties of the encapsulated RT27 in the P(DVB-co-MMA)/RT27 capsules were measured by thermogravimetric analyzer and differential scanning calorimeter. The heats of melting (DH m ; 153 J/g-RT27) and crystallization (DH c ; 164 J/g-RT27) of the encapsulated RT27 in the prepared copolymer capsules were higher than those in PDVB and closed to those of bulk RT27 (162 and 168 J/g-RT27 for DH m and DH c , respectively).

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Microencapsulated n-Octadecane with styrene-divinybenzene co-polymer shells

Cited by 60 publications

References 28 publications

Review of solid–liquid phase change materials and their encapsulation technologies

Review of solid–liquid phase change materials and their encapsulation technologies

Review on microencapsulated phase change materials (MEPCMs): Fabrication, characterization and applications

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

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