Preparation of calcium alginate microcapsules containing n-nonadecane by a melt coaxial electrospray method

Moghaddam, Meghdad Kamali; Mortazavi, Sayed Majid; Khayamian, Taghi

doi:10.1016/j.elstat.2014.10.013

Cited by 74 publications

(40 citation statements)

References 38 publications

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“…It was first introduced by Loscertales et al who proposed a method to generate steady coaxial jets of immiscible liquids having micrometre/nanometre diameter in size. The schematic diagram of melt‐coaxial electrospray technique used by Moghaddam et al is shown in Figure . The authors first time produced the microcapsules using n ‐nonadecane and sodium alginate as core and shell materials, respectively.…”

Section: The Preparation Technologies For Epcmsmentioning

confidence: 99%

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The micro‐/nano‐PCMs for thermal energy storage systems: A state of art review

et al. 2019

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Summary With advancement in technology—nanotechnology, various thermal energy storage (TES) materials have been invented and modified with promising thermal transport properties. Solid‐liquid phase change materials (PCMs) have been extensively used as TES materials for various energy applications due to their highly favourable thermal properties. The class of PCMs, organic phase change materials (OPCMs), has more potential and advantages over inorganic phase change materials (IPCMs), having high phase change enthalpy. However, OPCMs possess low thermal conductivity as well as density and suffer leakage during the melting phase. The encapsulation technologies (ie, micro and nano) of PCMs, with organic and inorganic materials, have a tendency to enhance the thermal conductivity, effective heat transfer, and leakage issues as TES materials. The encapsulation of PCMs involves several technologies to develop at both micro and nano levels, called micro‐encapsulated PCMs (micro‐PCM) and nano‐encapsulated PCMs (nano‐PCM), respectively. This study covers a wide range of preparation methods, thermal and morphological characteristics, stability, applications, and future perspective of micro‐/nano‐PCMs as TES materials. The potential applications, such as solar‐to‐thermal and electrical‐to‐thermal conversions, thermal management, building, textile, foam, medical industry of micro‐ and nano‐PCMs, are reviewed critically. Finally, this review paper highlights the emerging future research paths of micro‐/nano‐PCMs for thermal energy storage.

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Section: The Preparation Technologies For Epcmsmentioning

confidence: 99%

“…A, Schematic of the melt‐coaxial electrospray set‐up; B, coaxial needle set‐up . Reused with permission from Elsevier license number 4385861260669…”

Section: The Preparation Technologies For Epcmsmentioning

confidence: 99%

The micro‐/nano‐PCMs for thermal energy storage systems: A state of art review

et al. 2019

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“…wrapped with an insulated heating mantle [15]. In that work, the effect of alginate concentration, working distance, and flow rate ratios of shell to core solutions at a constant value were investigated.…”

Section: Introductionmentioning

confidence: 99%

“…In a previous study [15], the effects of applied voltage (10-20 kV), alginate concentration (1-2 wt%) and working distance (5-20 cm) on capsule size were investigated. In addition, the electrospray was carried out in constant shell/ core feed ratio of 3:1 and varied flow rates (e.g., 0.2, 0.4, 0.6, and 0.8 mL/h).…”

Section: Introductionmentioning

confidence: 99%

Micro/nano-encapsulation of a phase change material by coaxial electrospray method

2015

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“…Recently, Liang et al (2014) fabricated paraffin wax using a simple co-extrusion mini fluidic device. In the previous study (Moghaddam et al, 2015), the novel microcapsules of calcium alginate as a biopolymer shell and n-nonadecane as a core material were prepared using a melt coaxial electrospray. In that research, the effect of process parameters was investigated, and the results showed that the good spherical Micro-PCM with 56% encapsulation ratio were fabricated.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterisation and thermal properties of calcium alginate/n-nonadecane microcapsules fabricated by electro-coextrusion for thermo-regulating textiles

Moghaddam

Mortazavi

2015

Journal of Microencapsulation

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The objective of this study is to develop a new technique for producing a phase change material (PCM) loaded biopolymer capsule for thermo-regulating textiles. Electro-coextrusion process fabricated a series of microencapsulated phase change material (MEPCM) based on n-nonadecane core and alginate shell. The influence of the flow rate ratio of the shell/core on the formation, encapsulation efficiency and thermal behaviour of a microencapsulated PCM has been investigated. The MEPCM was characterised using optical microscopy and differential scanning calorimetry (DCS). The size and the encapsulation efficiency of a capsule decreased as the flow rate ratio of the shell/core increased. The PCM microcapsules contained 56-84% n-nonadecane and the size range from 200 to 400 µm, as evaluated by DSC and optical microscopy, respectively. The experimental results show that the electro-coextrusion method has a potential technology for the encapsulation of PCMs for thermal storage.

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Preparation of calcium alginate microcapsules containing n-nonadecane by a melt coaxial electrospray method

Cited by 74 publications

References 38 publications

The micro‐/nano‐PCMs for thermal energy storage systems: A state of art review

The micro‐/nano‐PCMs for thermal energy storage systems: A state of art review

Micro/nano-encapsulation of a phase change material by coaxial electrospray method

Preparation, characterisation and thermal properties of calcium alginate/n-nonadecane microcapsules fabricated by electro-coextrusion for thermo-regulating textiles

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