Synthesis of novel phase change material microcapsule and its application

Ng, Ding-Quan; Tseng, Yen-Lin; Shih, Yeng‐Fong; Lian, Hong-Yuan; Yu, Yikang

doi:10.1016/j.polymer.2017.11.046

Cited by 68 publications

(17 citation statements)

References 22 publications

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“…The TGA analysis was carried out at the heating rate of 5 °C/min from room temperature to 800 °C in a nitrogen atmosphere to investigate the thermal stability of the selected EPCMs and paraffin wax. The thermal study provides information about the change in physical properties like phase transitions, absorption, desorption, chemisorption, thermal stability, and solid-gas reaction [6,15]. The Differential scanning calorimeter (DSC) was used to measure the phase change properties of paraffin wax and selected samples of EPCMs.…”

Section: Characterizationmentioning

confidence: 99%

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Encapsulation of paraffin wax by rigid cross-linked poly (styrene divinylbenzene-acrylic acid) and its thermal characterization

Pradhan

Ramaswamy

2019

SN Appl. Sci.

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The latent heat phase change materials (PCMs) have emerged as an important and effective thermal storage material. The massive change in volume and the requirement for specialized containment of PCMs limits the thermal storage application of the common PCM like paraffin wax. Herein, we report the encapsulation of paraffin wax with the crosslinked poly(styrene-divinylbenzene-acrylic acid) shell via suspension polymerization. The optical and SEM images of the prepared encapsulated phase change materials (EPCMs) were in the size range of 200-500 µm. The thermal chargingdischarging rate of the EPCM was studied using a facile water bath technique. It was found that the optimized EPCM showed about 1.7 times faster-charging and 3.5 times faster discharging rate compared to reference PCM (without encapsulation). The latent heat for the EPCM was found to be about 3.3 times higher than the reference PCM. The thermal charging-discharging ability and latent heat values are higher for the encapsulated paraffin wax when compared with reference paraffin wax. The encapsulation of paraffin wax by polymeric materials via facial suspension polymerization using polymerizable vinyl monomers could find its application as heat storage materials.

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Section: Characterizationmentioning

confidence: 99%

“…In general, polymerization of vinyl monomers such as styrene (St), divinyl-benzene (DVB), acrylic acid (AA), hydroxyethyl methacrylate (HEMA), methyl methacrylate (MMA), polyvinyl chloride (PVC), etc. [5,9,[14][15][16][17]. can be carried out via free-radical or ionic polymerization through thermal or photochemical route.…”

Section: Introductionmentioning

confidence: 99%

Encapsulation of paraffin wax by rigid cross-linked poly (styrene divinylbenzene-acrylic acid) and its thermal characterization

Pradhan

Ramaswamy

2019

SN Appl. Sci.

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“…Overall, PCM application because of their aforementioned intrinsic characteristics ranges from the hand warmer to green buildings; however, for most applications, PCMs with a narrow phase change temperature range with a corresponding high latent heat value, along with robust chemical stability, are preferred because they can store and release higher amounts of energy cycles. Availability of PCMs in a wide range of melting points [7] is the main reason why they are extensively utilised in several different real-world applications including the following: (1) developing smart thermal microgrids; (2) portable thermal batteries; (3) indoor thermal management systems; (4) thermoregulating textiles, (5) warm supplies thermal protection; (6) in solar-driven cookers, (7) in solar heating systems; (8) water heaters; (9) refrigerators; (10) air-conditioning; (11) for cooling; (12) for the enhancement of thermal comfort in buildings; (13) thermal performance of building materials; (14) for the fabrication of energysaving equipment, (15) in healthcare; and (16) food preservation [8][9][10]. Overall, they are highly beneficial in any application that relies on controlled and efficient thermal energy storage (TES) and releases, commonly achieved by exploiting their melting and crystallisation behaviour.…”

Section: Introductionmentioning

confidence: 99%

Phase change materials for building construction: An overview of nano-/micro-encapsulation

Sivanathan

Dou

Wang

et al. 2020

Nanotechnology Reviews

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Buildings contribute to 40% of total global energy consumption, which is responsible to 38% of greenhouse gas emissions. It is critical to enhance the energy efficiency of buildings to mitigate global warming. In the last decade, advances in thermal energy storage (TES) techniques using phase change material (PCM) have gained much attention among researchers, mainly to reduce energy consumption and to promote the use of renewable energy sources such as solar energy. PCM technology is one of the most promising technologies available for the development of high performance and energy-efficient buildings and, therefore, considered as one of the most effective and on-going fields of research. The main limitation of PCM is its leakage problem which limits its potential use in building construction and other applications such as TES and textiles, which can be overcome by employing nano-/micro-encapsulation technologies. This paper comprehensively overviews the nano-/micro-encapsulation technologies, which are mainly classified into three categories including physical, physiochemical and chemical methods, and the properties of microcapsules prepared. Among all encapsulation technologies available, the chemical method is commonly used since it offers the best technological approach in terms of encapsulation efficiency and better structural integrity of core material. There is a need to develop a method for the synthesis of nano-encapsulated PCMs to achieve enhanced structural stability and better fracture resistance and, thus, longer service life. The accumulated database of properties/performance of PCMs and synthesised nano-/micro-capsules from various techniques presented in the paper should serve as the most useful information for the production of nano-/micro-capsules with desirable characteristics for building construction application and further innovation of PCM technology.

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“…Nevertheless, solar energy is timeliness and periodic, which are the main drawbacks of its use. Phase change material (PCM) with high latent heat can absorb solar energy and release heat to indoor environment through phase change . Previous studies have shown that adding paraffin provided a great benefit to the thermal performance of applications of glazed window, roof, wall, chimney, and other fields …”

Section: Introductionmentioning

confidence: 99%

“…Phase change material (PCM) with high latent heat can absorb solar energy and release heat to indoor environment through phase change. [20][21][22] Previous studies have shown that adding paraffin provided a great benefit to the thermal performance of applications of glazed window, [23][24][25][26][27][28][29] roof, [30][31][32] wall, 33,34 chimney, 35,36 and other fields. [37][38][39][40] Goia 23 demonstrated that adding PCM into glazed windows can utilize the solar energy effectively.…”

Section: Introductionmentioning

confidence: 99%

Seasonal thermal performance analysis of glazed window filled with paraffin including various nanoparticles

et al. 2020

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Summary A two‐dimensional heat transfer model was proposed to numerically investigate the effect of enriching phase change material (PCM) with different kinds of nanoparticles on thermal performance of glazing windows in different seasons of the year. The results were presented in terms of liquid fraction of PCM, inner surface temperature and temperature difference between interior and exterior surfaces of glass window, and their occurrence times. The results showed that adding nanoparticles into PCM can promote the melting and solidification processes, extend the total time of PCM being in the liquid state, and raise the internal surface temperature of glass. However, in summer season, the internal surface temperature decreases and the total melting time respectively reduces by 7 and 1.5 minutes by introducing TiO2 and ZnO nanoparticles into PCM. Furthermore, the introduced nanoparticles do not have the same effect on the thermal performance of the window unit. While the inner surface temperature decreases by 0.82 K in summer by addition of TiO2 to PCM, it increases by 0.84 K in transition season and 0.89 K in winter season by utilizing ZnO nanoparticles. Although the nano‐PCM remains in the solid state in winter, the existence of nanoparticles can still increase the inner surface temperature.

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Synthesis of novel phase change material microcapsule and its application

Cited by 68 publications

References 22 publications

Encapsulation of paraffin wax by rigid cross-linked poly (styrene divinylbenzene-acrylic acid) and its thermal characterization

Encapsulation of paraffin wax by rigid cross-linked poly (styrene divinylbenzene-acrylic acid) and its thermal characterization

Phase change materials for building construction: An overview of nano-/micro-encapsulation

Seasonal thermal performance analysis of glazed window filled with paraffin including various nanoparticles

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