Gas permeation and selectivity of poly(dimethylsiloxane)/graphene oxide composite elastomer membranes

Ha, Heonjoo; Park, Jaesung; Ando, Seiichiro; Kim, Chae Bin; Nagai, Kazukiyo; Freeman, Benny D.; Ellison, Christopher J.

doi:10.1016/j.memsci.2016.06.028

Cited by 77 publications

(33 citation statements)

References 35 publications

(36 reference statements)

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“…The solution was cast on a PTFE dish and dried for 24 h in a fume hood, followed by drying in a vacuum oven for 1 additional day. Based on our previous microscopy and modeling studies on PDMS/GO composites, 1 wt % (0.44 vol %) of GO dispersed isotropically in the matrix without any preferential alignment. This sample is denoted “Before Curing,” which showed liquid‐like behavior for all samples.…”

Section: Methodsmentioning

confidence: 99%

“…Owing to the inherent functionality and high surface area of individual GO sheets, our group has recently demonstrated a method to crosslink primary amine‐functionalized polymers in the presence of a small amount of GO, a simple two‐component curing system . Ring‐opening the epoxy group on the surface of GO with an amine group on the polymer generates a stable CN chemical bond.…”

Section: Introductionmentioning

confidence: 99%

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Molecularly templated reaction for forming poly(dimethyl siloxane)–graphene oxide composite elastomers

Ellison

2017

J Polym Sci B Polym Phys

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This study explores the molecularly templated reaction of pyrene‐terminated telechelic poly(dimethyl siloxane) (PDMS) with graphene oxide (GO) to produce composite elastomers. These materials undergo chemical crosslinking between secondary amides near PDMS chain ends and epoxies on the surface of GO as confirmed by infrared spectroscopy, rheology, gel content, and mechanical property measurements. The incorporation of pyrene end groups introduces π–π interactions with GO surfaces that enhance the reaction efficacy of the nearby secondary amide groups. As a comparison, methoxy‐terminated telechelic PDMS containing the same secondary amides near the chain ends did not exhibit appreciable crosslinking with GO. Depending on the concentration of the amide groups, the pyrene‐terminated PDMS/GO elastomer can be highly crosslinked (e.g., up to 96 wt % gel) but highly extensible (e.g., extensional strains of more than 200%). This general strategy could be implemented using other amide containing polymers to produce a wide range of high‐performance thermosets and elastomers. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 1406–1413

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecularly templated reaction for forming poly(dimethyl siloxane)–graphene oxide composite elastomers

Ellison

2017

J Polym Sci B Polym Phys

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“…Telechelic polymers are macromolecules bear reactive functional groups at the polymer chain ends. Their unique chemical structures offer a highly versatile and tunable platform for the development of novel functional materials, especially for the preparation of elastomer . Chang et al prepared shape memory polymer networks from blends of end‐carboxylated telechelic polyecaprolactone (XPCL) and epoxidized natural rubber (ENR).…”

Section: Introductionmentioning

confidence: 99%

“…The XPCL/ENR blends can form cross‐linked structure via the reaction between the reactive groups of each polymer during molding at high temperature. Ha et al took advantage of simple chemistry between amine‐terminated telechelic polydimethylsiloxane and graphene oxide (GO) to prepare elastic composite materials. Telechelic polydimethylsiloxane was used as base material, GO as both a filler and multifunctional cross‐linker.…”

Section: Introductionmentioning

confidence: 99%

Applications of α, ω‐telechelic polydimethylsiloxane as cross‐linkers for preparing high‐temperature vulcanized silicone rubber

Dong

Wang

et al. 2019

Polymers for Advanced Techs

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Multiamino‐terminated telechelic polydimethylsiloxane (MATTPS) was synthesized via aza‐Micheal reaction and amidation reaction and subsequently employed as cross‐linkers of polysiloxane containing γ‐chloropropyl groups (CPPS) for preparing a series of high‐temperature vulcanized silicone rubber (MCSR/MATTPS). The curing, mechanical, and thermal properties of MCSR/MATTPS were studied through rheometry, mechanical testing, and thermogravimetric analysis (TGA). MCSR/MATTPS exhibits optimal mechanical properties with a tensile strength of 9.52 MPa and tear strength of 45.4 kN/m when the molar ratio of [N–H]/[CH2CH2CH2Cl] is of 1, which is attributed to the formation of concentrative cross‐linking in the three‐dimensional polymer networks. The thermal behaviors of MCSR/MATTPS display a two‐step weight loss process by heating in nitrogen whereas more than two weight loss process in air. TGA results indicate that the introduction of aliphatic long chain and carbonyl groups in the structure of MATTPS has little negative effect on the thermal stability of MCSR/MATTPS.

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“…In particular, much attention has been concentrated on introducing carbon‐based nanoparticles (CbNs) in this research area . CbNs not only can perform as great nucleation agents due to their extremely high surface energy and relatively small dimension but also can enhance the mechanical properties of polymeric foam . Yen et al .…”

Section: Introductionmentioning

confidence: 99%

The distinctive nucleation of polystyrene composites with differently shaped carbon‐based nanoparticles as nucleating agent in the supercritical CO₂ foaming process

Xiao

Liao

et al. 2018

Polymer International

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Microcellular polystyrene (PS)/carbon‐based nanoparticle (CbN) composites were prepared by a pressure release process using supercritical CO2 as the foaming agent. Nanocomposite foams with different shapes or dimensions but with CbNs with a similar surface structure showed a quite different cell nucleation. The underlying nucleation mechanism was semi‐quantitatively analyzed by classical nucleation theory, which indicated that the energy barrier for heterogeneous nucleation was related to the shapes of the fillers. Below 80 °C and 20 MPa, the nucleation density of the composites with different fillers showed marked differences, among which the nucleation density of PS/fullerene (FE) was the highest, followed by PS/carbon nanotubes (CNTs) and PS/thermally reduced graphene (TRG). However, the difference in nucleation density of PS/CbNs decreased with increase in filler content to 0.3 wt%. With increase in foaming temperature, the PS/TRG composite foams showed the highest cell density and no cellular merging and collapsing at 100 and 120 °C. The results obtained from DSC, rheology and positron annihilation lifetime spectroscopy measurements showed that FE nanoparticles exhibited the strongest plasticization effects on the matrix followed by CNTs and TRG nanoparticles. The distinctive plasticization suggested that the shapes of CbNs have a strong influence on the interaction between the PS matrix and the nanoparticles, which could affect the energy barrier for heterogeneous nucleation. The influence of CO2 on the rheology and thermal properties of the composites was investigated using high pressure DSC and high pressure rheology measurements. The results revealed that at high temperature high viscosity became the key factor to determining the cell morphology of nanocomposite foams by preventing bubble coalescence and collapse. © 2018 Society of Chemical Industry

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Gas permeation and selectivity of poly(dimethylsiloxane)/graphene oxide composite elastomer membranes

Cited by 77 publications

References 35 publications

Molecularly templated reaction for forming poly(dimethyl siloxane)–graphene oxide composite elastomers

Molecularly templated reaction for forming poly(dimethyl siloxane)–graphene oxide composite elastomers

Applications of α, ω‐telechelic polydimethylsiloxane as cross‐linkers for preparing high‐temperature vulcanized silicone rubber

The distinctive nucleation of polystyrene composites with differently shaped carbon‐based nanoparticles as nucleating agent in the supercritical CO₂ foaming process

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Gas permeation and selectivity of poly(dimethylsiloxane)/graphene oxide composite elastomer membranes

Cited by 77 publications

References 35 publications

Molecularly templated reaction for forming poly(dimethyl siloxane)–graphene oxide composite elastomers

Molecularly templated reaction for forming poly(dimethyl siloxane)–graphene oxide composite elastomers

Applications of α, ω‐telechelic polydimethylsiloxane as cross‐linkers for preparing high‐temperature vulcanized silicone rubber

The distinctive nucleation of polystyrene composites with differently shaped carbon‐based nanoparticles as nucleating agent in the supercritical CO2 foaming process

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The distinctive nucleation of polystyrene composites with differently shaped carbon‐based nanoparticles as nucleating agent in the supercritical CO₂ foaming process