Water vapour transport in polyethylene oxide/polymethyl methacrylate blends

Elberaïchi, A.; Daro, Arlette; David, Christiane

doi:10.1016/s0014-3057(98)00212-2

Cited by 21 publications

(9 citation statements)

References 23 publications

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“…The miscibility of the polymer pairs is always one of the objectives of the study for blends. PEO/PMMA blends are one of the most studied blends on their miscibility, [11,[21][22][23][24] crystallinity, [25] thermal properties [10] etc. The miscibility of PEO/PMMA blends depends on several factors such as temperature, [26] composition of the blend, [21,27] the tacticity of PMMA [28,29] and so on.…”

Section: à4mentioning

confidence: 99%

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On Thermal and Spectroscopic Studies of Poly(ethylene oxide)/Poly(methyl methacrylate) Blends with Lithium Perchlorate

Karim

Sim

Chan

et al. 2015

Macromolecular Symposia

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Summary: In this study, thermal properties and ion-polymer interactions of lithium perchlorate (LiClO 4 ) in poly(ethylene oxide)/poly(methyl methacrylate) (PEO/PMMA) blend prepared by solution casting technique were elucidated. The spectroscopic studies of the salt-free and salt-doped PEO/PMMA blends were investigated using x-ray diffraction (XRD) and Fourier transform infra-red (FTIR), respectively. XRD study reveals that the crystalline structure of PEO is slight change when PMMA is blended to PEO. The thermal behaviour of PEO, PMMA and their blends with and without LiClO 4 was investigated by differential scanning calorimetry (DSC). The presence of a single and composition dependent glass transition temperature (T g ) reflects the miscibility of the salt-free PEO/PMMA blends in the molten state. The T g s of PEO, PMMA and the blends generally increase with ascending mass fraction of salt (W S ). However, PEO/PMMA 50/50 blend with W S ! 0.091 shows phase separation between the two polymers. The melting temperature (T m ) and crystallinity (X Ã ) of PEO are suppressed when blended with PMMA, thus, confirm the miscibility of the salt-free PEO/PMMA blends in the molten state. Presence of LiClO 4 to PEO, PMMA and their blends does not influences the X Ã of PEO. Investigation by FTIR does not show any specific interaction between PEO and PMMA for the salt-free blends whereas for the salt-doped blends, Li þ ions are observed to coordinate with the oxygen atom of both the PEO ether and the PMMA carboxyl groups. Impedance spectroscopy study demonstrates that the LiClO 4 -doped PEO/PMMA 75/25 blend has lower ion conductivity than that of the PEO þ LiClO 4 system but recorded enhanced conductivity as compared to PMMA þ LiClO 4 systems at W S ¼ 0.091.

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Section: à4mentioning

confidence: 99%

“…[22][23][24]30] This is mainly caused by the crystallization of PEO. PEO/PMMA blends are miscible in the molten state below the lower critical solution temperature (LCST).…”

Section: Impedance Spectroscopy (Is)mentioning

confidence: 99%

On Thermal and Spectroscopic Studies of Poly(ethylene oxide)/Poly(methyl methacrylate) Blends with Lithium Perchlorate

Karim

Sim

Chan

et al. 2015

Macromolecular Symposia

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“…PEO/PMMA blends have grabbed the attention of researchers, where studies on miscibility, crystallinity and thermal properties of PEO/PMMA blends were discussed extensively. Miscibility of PEO/PMMA blends depend on temperature, composition of the blends etc .…”

Section: Introductionmentioning

confidence: 99%

Thermal Properties and Intermolecular Interaction of Blends of Poly(ethylene oxide) and Poly(methyl acrylate)

Halim

Chan

Sim

2016

Macromolecular Symposia

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Summary Polymer blends of poly(ethylene oxide) (PEO) and poly(methyl acrylate) (PMA) were prepared by solution casting method. Thermal stability of the binary PEO/PMA blends was examined by termogravimetric analysis (TGA). Decomposition temperatures of the binary blends were estimated from the onsets of the weight loss curves of TGA thermograms. The decomposition temperatures of the blends increase when the content of PEO elevates. Hence, PEO has a better thermal stability as compared to PMA. The activation energy of thermal decomposition of each sample was calculated from the initial stage of the decomposition. Quantities of EA increase when content of PEO increases in the blends. Differential scanning calorimeter (DSC) was used to investigate the thermal properties of binary PEO/PMA blends. An existence of a single and composition‐dependent glass transition temperature (Tg) for the blends indicates the miscibility of the PEO/PMA blends. The Tgs of PEO/PMA blends increase when PMA content increases. Furthermore, when PMA is blended with PEO, the crystallinity (X*) and melting temperature (Tm) of PEO in PEO/PMA blends are depressed. Thus, the miscibility of the blends in the molten state is in agreement with Tg results. Fourier‐transform infrared (FTIR) spectroscopy was used to study the intermolecular interaction of between PEO and PMA in the blends. The characteristic absorbance bands of ether and carbonyl groups of PEO and PMA were examined by FTIR. PEO and PMA only display weak van der Waals interactions in blends. Hence the miscibility of PEO and PMA in the blends may be more towards the entropic effect instead of the enthalpic effect.

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“…The control of polymer hydration properties is a key parameter for a wide range of applications, going from biocompatible materials to barrier materials, packaging, breathable materials, or gas separation membranes. Different ways allowing the control of the hydrophilic/hydrophobic balance of the materials through blending route, copolymer route, (nano)composite approach, or development of hybrid organic/inorganic materials have been investigated to obtain a better control of both functional and mechanical properties for these applications. Among them, the copolymer route appears as particularly interesting as it allows to easily design different block lengths and natures and therefore to adjust functional properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of different alkyl‐methylimidazolium tetrafluoroborate ionic liquids on the structure of pebax^® films. Consequences on thermal, mechanical, and water sorption and diffusion properties

Magana

Gain

Gouanvé

et al. 2015

J Polym Sci B Polym Phys

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In this work, three ionic liquids (ILs) differing by the length of the alkyl chain linked to their cation were incorporated in a Pebax® copolymer matrix through a solvent cast process for composition from 0 to 70 wt % IL. The copolymer/IL miscibility was investigated via IR Spectroscopy, Differential Scanning Calorimetry and Scanning Electron Microscopy. The three ILs dissolved in the copolymer soft phase for ILs content below 30 wt % whereas they formed segregated dispersed domains at higher loadings. The plasticizing effect of the ILs was examined through DSC and thermomechanical analyses. In the range of IL amount from 0 to 30 wt %, no significant differences were observed in the thermomechanical properties as a function of the IL structure. At higher IL content, the films based on 1‐ethyl‐methylimidazolium tetrafluoroborate sustained better properties. All films exhibited a good thermal stability up to 300 °C. The water sorption isotherms were modeled with GAB equation and both the kinetic and thermodynamic parameters of the sorption mechanism were investigated. A non‐monotonic evolution of the GAB parameters and diffusion coefficient as a function of the IL content was evidenced. Moreover, different behaviors were observed as a function of the IL nature and structuration within the copolymer matrix. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 811–824

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Water vapour transport in polyethylene oxide/polymethyl methacrylate blends

Cited by 21 publications

References 23 publications

On Thermal and Spectroscopic Studies of Poly(ethylene oxide)/Poly(methyl methacrylate) Blends with Lithium Perchlorate

On Thermal and Spectroscopic Studies of Poly(ethylene oxide)/Poly(methyl methacrylate) Blends with Lithium Perchlorate

Thermal Properties and Intermolecular Interaction of Blends of Poly(ethylene oxide) and Poly(methyl acrylate)

Influence of different alkyl‐methylimidazolium tetrafluoroborate ionic liquids on the structure of pebax^® films. Consequences on thermal, mechanical, and water sorption and diffusion properties

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Water vapour transport in polyethylene oxide/polymethyl methacrylate blends

Cited by 21 publications

References 23 publications

On Thermal and Spectroscopic Studies of Poly(ethylene oxide)/Poly(methyl methacrylate) Blends with Lithium Perchlorate

On Thermal and Spectroscopic Studies of Poly(ethylene oxide)/Poly(methyl methacrylate) Blends with Lithium Perchlorate

Thermal Properties and Intermolecular Interaction of Blends of Poly(ethylene oxide) and Poly(methyl acrylate)

Influence of different alkyl‐methylimidazolium tetrafluoroborate ionic liquids on the structure of pebax® films. Consequences on thermal, mechanical, and water sorption and diffusion properties

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Product

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Influence of different alkyl‐methylimidazolium tetrafluoroborate ionic liquids on the structure of pebax^® films. Consequences on thermal, mechanical, and water sorption and diffusion properties