Shape-stabilized poly(ethylene glycol) (PEG)-cellulose acetate blend preparation with superior PEG loading via microwave-assisted blending

Sundararajan, Swati; Samui, A. B.; Kulkarni, Prashant S.

doi:10.1016/j.solener.2016.12.056

Cited by 89 publications

(50 citation statements)

References 33 publications

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“…Based on the above‐mentioned selection criteria (high Δ H M and different melting temperature ranges), PEG, PE, PP, and POM (high Δ H M ) and PA (higher melting temperature range) were identified as the most suitable polymeric PCM. The applicability of PEG as PCM has already been examined profoundly . The melting temperature range of polypropylene (PP) is almost congruent with polyoxymethylene (POM), which exhibits higher Δ H M , and the degradation behavior of PP is assumed to be comparable to the one of PE.…”

Section: Materials Selectionmentioning

confidence: 99%

“…Nevertheless, up to now, polymeric materials have mostly been applied as form‐stabilizer for PCM,for example, refs. –i, and with two exceptions not as PCM per se: polyethylene glycol has been tested as PCM profoundly and polyethylene has been considered as PCM by a few authors . However, also various other semi‐crystalline polymers show great potential as PCM, especially with regard to high heat of fusion, different suitable melting temperature ranges, cost‐effectiveness, easily adaptable properties via compounding, and the potential use of recycled polymers.…”

Section: Introduction and Scopementioning

confidence: 99%

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Applicability of Polymeric Materials as Phase Change Materials

Weingrill

Resch‐Fauster

Zauner

2018

Macro Materials & Eng

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The applicability of more than 70 semi‐crystalline polymer grades with different melting temperatures as phase change materials (PCM) is investigated. Their storage capacity (heat of fusion) and application temperature range (defined by the melting temperature range and the degradation behavior) are analyzed via differential scanning calorimetry (DSC). Application‐oriented stability investigations (thermal cycling and exposure to static thermal load above the polymer’s melting temperature) are applied on the most promising polymer types. The thermal and thermo‐oxidative degradation behavior is monitored via DSC and Fourier‐transform infrared spectroscopy. Different aging phenomena are identified. However, these have only little impact on the polymer’s storage capacity. Therefore, a great potential of polymers as PCM is revealed. Additionally, the economic efficiency of polymers as PCM is estimated and discussed.

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Section: Materials Selectionmentioning

confidence: 99%

Section: Introduction and Scopementioning

confidence: 99%

Applicability of Polymeric Materials as Phase Change Materials

Weingrill

Resch‐Fauster

Zauner

2018

Macro Materials & Eng

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“…The black CuO nanomaterial is composed of irregularly shaped particles with a maximum size of around 200 nm. The PEG/metal oxide composites were prepared by combining the metal oxide and the PEG2000 polymer with a mass ratio of 5:95 in ethanol and stirring together for 1 h at 70 °C . The resulting composites were labeled PEG/Al 2 O 3 (i), PEG/Al 2 O 3 (ii), PEG/Cu 2 O, and PEG/CuO, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Poly(ethylene glycols) (PEGs) are well‐defined macromolecules with desirable characteristics such as nontoxicity, biocompatibility, biodegradability, hydrophilicity, and ease of chemical modification. Moreover, PEGs are emerging as potential organic PCMs due to their high latent heat, suitable phase change temperature, and thermal stability . The phase change characteristics of PEG are dependent on their molecular weight.…”

Section: Introductionmentioning

confidence: 99%

Porosity reduction of polyethylene glycol phase change materials by using nanoscale thermal‐energy‐conducting medium during crystallization process

Zhang

Sun

Yuan

et al. 2017

J of Applied Polymer Sci

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Poly(ethylene glycols) (PEGs) are phase change materials (PCMs) that exhibit undesirable heat transfer properties, which restrict their industrial utility. Apart from the intrinsic material properties, a large quantity of micropores in the crystalline PEG polymers cause poor heat transfer performance. In this work, the formation and growth of micropores are reported through in situ characterization. The addition of a nanoscale thermal‐energy‐conducting medium into PCMs has been proposed for reducing their porosity. The mechanism for reducing porosity is reported for prepared composite PCMs. The intrinsic causes are thought to be the following. Metal oxide nanoparticles can migrate with the liquid PEG flow, which can reduce the thermal stresses in the crystal growth process. In addition, the nanoscale medium promotes heterogeneous nucleation. The results of this study show that reducing the porosity of the polymer crystals is an important approach for improving the heat transfer properties of the PEG PCMs. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45446.

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“…[8][9][10] However, organic PCMs still have several drawbacks such as leakage above normal melting temperatures, low thermal conductivity, and weak interfacial combination, which restrict large-scale applications of these PCMs in latent heat storage. [11][12][13] Composite PCMs were proposed by integrating PCMs into a variety of inorganic or organic supporting materials. This approach not only prevents the leakage and diffusion of PCMs, but it also enhances latent heat storage capabilities and thermal performance.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity of copper‐doped polyethylene glycol/urchin‐like porous titanium dioxide phase change materials for thermal energy storage

et al. 2019

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Summary A composite phase change material (PCM) of copper‐doped polyethylene glycol (PEG) 2000 impregnated urchin‐like porous titanium dioxide (TiO2) microspheres (PEG/TiO2) was successfully synthesised. The urchin‐like porous TiO2 structures contain hollow cavities that can provide a high PEG loading capacity of up to 80 wt%. Copper nanoparticles were uniformly dispersed on the outer and inner surfaces of the 0.8PEG/TiO2 as additives to enhance the thermal conductivity of the composite PCM. The latent heat of the Cu/PEG/TiO2 porous composite PCM reached 133.8 J/g, and the thermal conductivity was 0.58 W/(mK), which was 152.2% higher than that of TiO2 and 38.1% higher than 0.8PEG/TiO2. Moreover, the Cu/PEG/TiO2 porous composite PCM has excellent thermal stability and reliability.

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Shape-stabilized poly(ethylene glycol) (PEG)-cellulose acetate blend preparation with superior PEG loading via microwave-assisted blending

Cited by 89 publications

References 33 publications

Applicability of Polymeric Materials as Phase Change Materials

Applicability of Polymeric Materials as Phase Change Materials

Porosity reduction of polyethylene glycol phase change materials by using nanoscale thermal‐energy‐conducting medium during crystallization process

Enhanced thermal conductivity of copper‐doped polyethylene glycol/urchin‐like porous titanium dioxide phase change materials for thermal energy storage

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