Polyurethanes as solid–solid phase change materials for thermal energy storage

Alkan, Cemil; Günther, Eva; Hiebler, Stefan; Ensari, Ömer Faruk; Kahraman, Derya

doi:10.1016/j.solener.2012.03.012

Cited by 142 publications

(75 citation statements)

References 21 publications

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“…where ΔH m is the melting enthalpy of the composite films, and ΔH m o is the melting enthalpy for the 100 % crystalline LDPE sample (293 J/g) [19][20][21]. The theoretical melting enthalpy was calculated using Eq.…”

Section: Characterizationmentioning

confidence: 99%

Effects of the paraffin wax (PW) content on the thermal and permeation properties of the LDPE/PW composite films

et al. 2015

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A series of low density polyethylene/paraffin wax (LDPE/PW) composite films were fabricated via a twin-screw extruder, and their morphologies, thermal properties, gas and vapor permeations, and surface properties were interpreted as functions of the PW contents. The PW was well dispersed into the LDPE matrix at low PW contents, whereas phase separation and an increase in surface roughness occurred with increasing PW content. The parameter results of surface properties such as contact angle, surface free energy, and solubility showed that the hydrophobicity of the LDPE/PW composite films also increased, and their phase changes and permeation properties were significantly dependent on the PW contents in the LDPE matrix. With increasing PW contents, both the oxygen transmittance rate (OTR) and water vapor transmittance rate (WVTR) of the LDPE/PW composite films decreased at a relatively low measuring temperature (23°C), and increased at a relatively high temperature (48°C). These results relate to the morphological structure (including tortuous paths and crystallinity) of the composite films via the incorporation of PW.

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Section: Characterizationmentioning

confidence: 99%

Effects of the paraffin wax (PW) content on the thermal and permeation properties of the LDPE/PW composite films

et al. 2015

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“…Thus, synthesis of novel SSPCMs with high phase change enthalpy and low phase change temperature is a significant and pressing work. Recently, the preparation and application of polymeric SSPCMs has arose growing interests of considerable scientists [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33], and many novel polymeric SSPCMs were obtained by chemical grafting, blocking and crosslinking copolymerization using the solid frameworks as a hard segment and SLPCMs as a soft segment.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, they are usually used as the phase change functional chains (soft segment) in the molecule of polymeric SSPCMs [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Jiang et al [17] reported a series of SSPCMs by grafting polymerization in which CDA acted as the main chain and PEG with different molecular weights acted as the grafting side chain.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al [19,20] synthesized cellulose-graft-MPEG SSPCMs in common organic solvent and ionic liquid respectively. Other polymeric SSPCMs containing the soft segment of PEG and its derivatives such as PEG-based PU [21][22][23][24][25][26][27], PVA-graft-PEG [28], PS-graft-PEG [29], crosslinked PEG/MDI/PE [30], phenyl ethylene/TDI/MPEG [31] were successively reported. In our previous works [32,33], the crosslinked PEG-PGMA and PEG/MDI/glucose copolymers were also synthesized and characterized as novel SSPCMs.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and performances of novel solid–solid phase change materials with hexahydroxy compounds for thermal energy storage

et al. 2015

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“…As a consequence, transitions from solid to liquid and from liquid to vapour have high transition heats involved, but for practical applications, the large difference in volume between liquid and vapour is a problem (a short discussion and further references can be found in Reference [1]). Therefore, attention has been focussed at the solid-liquid transition [1,3,4], and to a lesser extent at solid-solid transitions [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A new calorimetric technique for phase change materials and its application to alkane-based PCMs

Duponchel

Longuemart

Glorieux

et al. 2016

Mater Renew Sustain Energy

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The correct determination of the phase transition behaviour of phase change materials (PCMs) is paramount for assessing their application potential. In this work, the merits of a novel calorimetric technique, Peltierelement-based adiabatic scanning calorimetry (pASC), for PCM characterisation are investigated, especially in comparison with the commonly-used differential scanning calorimeter (DSC). A comparative study of two alkanebased PCMs, the commercial mixture RT42 and the pure alkane tricosane (C23) with these two techniques shows that pASC provides data at much higher resolution than DSC, due to its operation in thermodynamic equilibrium. Specifically the rate-dependence and deformation that is inherent to DSC experiments is absent in pASC. In addition, the enthalpy of the PCM is directly obtained. pASC results easily conform to the accuracy limits that are proposed in literature for the transition temperature and storage capacity of PCMs.

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Polyurethanes as solid–solid phase change materials for thermal energy storage

Cited by 142 publications

References 21 publications

Effects of the paraffin wax (PW) content on the thermal and permeation properties of the LDPE/PW composite films

Effects of the paraffin wax (PW) content on the thermal and permeation properties of the LDPE/PW composite films

Synthesis and performances of novel solid–solid phase change materials with hexahydroxy compounds for thermal energy storage

A new calorimetric technique for phase change materials and its application to alkane-based PCMs

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