Fabrication and properties of graphene oxide-grafted-poly(hexadecyl acrylate) as a solid-solid phase change material

Cao, Ruirui; Liu, Haihui; Chen, Sai; Pei, Dong-fang; Miao, Jinlei; Zhang, Xingxiang

doi:10.1016/j.compscitech.2017.06.019

Cited by 48 publications

(21 citation statements)

References 32 publications

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“…e leakage is usually circumvented by introducing form-stable support. Considerable efforts have been devoted to develop form-stable composites with high energy-storage densities [12][13][14][15][16][17][18][19][20][21][22][23]. e form stabilization strategies of PCMs include encapsulation [12,13], grafting [14,15], and physical adsorptions [16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…Considerable efforts have been devoted to develop form-stable composites with high energy-storage densities [12][13][14][15][16][17][18][19][20][21][22][23]. e form stabilization strategies of PCMs include encapsulation [12,13], grafting [14,15], and physical adsorptions [16][17][18][19][20][21][22][23]. Clay, diatomite, halloysite, active carbon, silica, expanded graphite, and graphene have been employed as fillers to prevent melted PCMs from leaking during the phase transition via physical adsorptions, relying on their predominantly polar surface and/or high porous structures [16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Shape Stability of Polyethylene Glycol/Acetylene Black Phase Change Composites for Latent Heat Storage

Zhang

et al. 2018

Advances in Materials Science and Engineering

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Sufficient shape stability is essential for a high-performance phase change material (PCM). Although significant advances have been made to develop form-stable composites, technical development in the field of polymer-based PCMs is currently limited by an incomplete understanding of the shape stability. Form-stable polyethylene glycol/acetylene black (PEG/AB) PCMs containing PEGs with different average molecular weights have been obtained by melt mixing to investigate the shape stability of the PEG/AB composites. It was found that the phase change behaviors of the PEG/AB composites were not only attributed to the interactions between the AB and PEG, but also to the intermolecular interactions of the PEG chains, depending on the varying molecular weights of the PEGs. Physically crosslinked structure with temporary junctions was formed through hydrogen bonding, capillary, surface tension forces, intermolecular friction, and macromolecular entanglement, which contributed to the constrained chain motion and thus the solid-solid phase change behavior of the PEG/AB composites. The physically crosslinked structure was more stable with longer length of the PEG molecular chains, resulting in higher critical impregnated contents of the PEG into the AB and thus improved latent heat.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Shape Stability of Polyethylene Glycol/Acetylene Black Phase Change Composites for Latent Heat Storage

Zhang

et al. 2018

Advances in Materials Science and Engineering

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“…This structure endows graphene the highest measured modulus (Young's modulus is 1 TPa) and break strength (42 N m −1 ) of any substance to date, while exhibiting fascinating electrical, mechanical, and thermal properties. 23 It has been found that these decorated GO, as nanofillers, can form chemical bonds with the matrix polymer, thereby effectively improving the mechanical properties of the resin. As one derivative of graphene, GO nanosheets possess many oxygen-containing functional groups on its surface and edges, which can help to improve the dispersibility of graphene considerably.…”

Section: Introductionmentioning

confidence: 99%

“…22 Cao et al fabricated a shape-stabilized GO-grafted-poly(hexadecyl acrylate) material by free-radical polymerization. 23 It has been found that these decorated GO, as nanofillers, can form chemical bonds with the matrix polymer, thereby effectively improving the mechanical properties of the resin. 24,25 Polyaspartic acid (PASP) is a representative green chemical product with water solubility and biodegradability.…”

Section: Introductionmentioning

confidence: 99%

Effect of polyaspartic acid‐functionalized graphene oxide on the mechanical performance of polyimide‐based composites

Yuan

et al. 2019

J of Applied Polymer Sci

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Graphene oxide (GO) can improve the mechanical property of polymer matrix greatly. However, its poor dispersibility may considerably lower reinforcing efficiency. To address this problem, the environment-friendly polyaspartic acid (PASP) was adopted to modify GO through two generally modified methods: hydrogen bond adsorption and chemical graft modification. Findings indicate that the covalent bond grafted PASP-GO exhibits better dispersibility than the product by noncovalent method (PASP/GO-noncovalent). For chemically grafted PASP-GO, the nearly spherical polymer nanoparticles are formed on the GO nanosheets through self-polymerization, and its size can be well manipulated by adjusting the dosage of PASP so as to yield PASP-GO-1/4, PASP-GO-1/2, and PASP-GO-1/1 (mass ratio: m PASP /m GO = 1/4, 1/2, and 1/1); the corresponding diameters of these polymer aggregates are 56.4 AE 7.1, 90.1 AE 12.6, and 151.2 AE 16.1 nm. They are further utilized to reinforce polyimide matrix. Compared with the PASP-GO-1/2 and PASP-GO-1/1, the smaller PASP-GO-1/4 has better strengthening effect, due to its high specific surface area and dense distribution. This desirable fabrication of GO-based nanofillers provides a new avenue on the development of polymer matrix with comprehensive performances.

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“…Our group found that poly( n -alkyl acrylate)(PAA) with more than 10 atoms in its side-chain was a phase change material [13,14]. The melting temperature ( T m ) of the long side-chains, which melt during the melting process, can be controlled by the length of the side chain, causing significant changes in the physical properties of the polymer [15].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Novel Shape-Stabilized Phase Change Materials Based on P(TDA-co-HDA)/GO Composites

Chen

Cao

et al. 2019

Polymers

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Shape-stabilized phase change materials (SPCMs) are green, reusable energy storage materials. Because the melting temperature of n-alkyl acrylate copolymer is adjustable by controlling the side-chain length, the appropriate melting temperature can be achieved. Poly(tetradecyl acrylate-co-hexadecyl acrylate) (P(TDA-co-HDA)) with a molar ratio of 1:1 and SPCMs were fabricated via an atom transfer radical polymerization (ATRP) method and a solution blending method with P(TDA-co-HDA) as a thermal storage material and graphene oxide (GO) as a supporting substance. In this composite, an SPCM was achieved, which absorbed heat at 29.9 °C and released it at 12.1 °C with a heat storage capacity of 70 J/g at a mass ratio of GO of 10%. The material retained its shape without any leakage at 60 °C, which was much higher than that of the melting temperature of P(TDA-co-HDA). The SPCMs exhibited good crystallization behaviors and excellent thermal reliabilities after 100 thermal cycles. The thermal properties of the P(TDA-co-HDA)/GO composite PCMs with various GO loadings were also investigated. The novel shape-stabilized PCMs fabricated in this study have potential uses in thermal energy storage applications.

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Fabrication and properties of graphene oxide-grafted-poly(hexadecyl acrylate) as a solid-solid phase change material

Cited by 48 publications

References 32 publications

Shape Stability of Polyethylene Glycol/Acetylene Black Phase Change Composites for Latent Heat Storage

Shape Stability of Polyethylene Glycol/Acetylene Black Phase Change Composites for Latent Heat Storage

Effect of polyaspartic acid‐functionalized graphene oxide on the mechanical performance of polyimide‐based composites

Fabrication and Characterization of Novel Shape-Stabilized Phase Change Materials Based on P(TDA-co-HDA)/GO Composites

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