Mechanical properties of amorphous PEI, PES, and PVC up to 11 GPa studied by Brillouin light scattering

Oh, Kyoung Hun; Ko, Young‐Ho; Kim, Kwang-Joo

doi:10.1016/j.physb.2019.411722

Cited by 8 publications

(4 citation statements)

References 32 publications

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“…PEI and PES exhibited a significant increase in bulk and elastic modulus, while the Poisson’s ratio remained constant. The acoustic velocity and mass density showed a rapid increase on increasing pressure to 2 GPa, followed by a relatively slower increase up to 11 GPa …”

Section: Characterization Methodologiesmentioning

confidence: 98%

“…The acoustic velocity and mass density showed a rapid increase on increasing pressure to 2 GPa, followed by a relatively slower increase up to 11 GPa. 282 BLS requires the user to be very specific about the sample configurations as the data obtained can be affected by the isotropy of the sample and the effect of substrate on scattered data, etc. The acoustic mode selection to determine the phonon's velocity is also important.…”

Section: Brillouin Light Scatteringmentioning

confidence: 99%

“…They also presented a measurement of shear horizontal waves in thin membranes. In a study by Oh et al 282 the mechanical properties of poly(ether imide) (PEI) and poly(ether sulfone) (PES) were investigated under varying pressure conditions. PEI and PES exhibited a significant increase in bulk and elastic modulus, while the Poisson's ratio remained constant.…”

Section: Brillouin Light Scatteringmentioning

confidence: 99%

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Advancements in Novel Mechano-Rheological Probes for Studying Glassy Dynamics in Nanoconfined Thin Polymer Films

Madhusudanan,

Chowdhury

2024

ACS Polym. Au

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The nanoconfinement effects of glassy polymer thin films on their thermal and mechanical properties have been investigated thoroughly, especially with an emphasis on its altered glass transition behavior compared to bulk polymer, which has been known for almost three decades. While research in this direction is still evolving, reaching new heights to unravel the underlying physics of phenomena observed in confined thin polymer films, we have a much clearer picture now. This, in turn, has promoted their application in miniaturized and functional applications. To extract the full potential of such confined films, starting from their fabrication, function, and various applications, we must realize the necessity to have an understanding and availability of robust characterization protocols that specifically target thin film thermo-mechanical stability. Being nanometer-sized in thickness, often atop a solid substrate, direct mechanical testing on such films becomes extremely challenging and often encounters serious complexity from the dominating effect of the substrate. In this review, we have compiled together a few important novel and promising techniques for mechano-rheological characterization of glassy polymer thin films. The conceptual background involved in each technique, constitutive equations, methodology, and current status of research are touched upon following a pedagogical tutorial approach. Further, we discussed each technique's success and limitations, carefully covering the puzzling or contradicting observations reported within the broad nexus of glass transition temperature−viscosity−modulus−molecular mobility (including diffusion and relaxation).

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Section: Characterization Methodologiesmentioning

confidence: 98%

Section: Brillouin Light Scatteringmentioning

confidence: 99%

Section: Brillouin Light Scatteringmentioning

confidence: 99%

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Advancements in Novel Mechano-Rheological Probes for Studying Glassy Dynamics in Nanoconfined Thin Polymer Films

Madhusudanan,

Chowdhury

2024

ACS Polym. Au

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“…Polyetherimide (PEI) is an amorphous polymer [13], [14] which capable to forming a membrane with an asymmetry structure, in which its surface morphology is predominantly dominated by high porosities and accompanied by a low thickness of the cross-sectional structure. This typical morphology has caused the PEI membrane to tend to produce high permeability.…”

Section: Introductionmentioning

confidence: 99%

Development of a New Polymer Membrane: Polyvinylidene fluoride/Polyetherimide Blend Membrane

Kusumawati

Santoso

Wibawa

et al. 2020

Int. J. Adv. Sci. Eng. Inf. Technol.

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Porous polyetherimide (PEI)/polyvinylidene fluoride (PVDF) coated flat sheet membranes with different compositions and polyethene glycol (PEG) pyrogenic additives have been prepared by non-solvent induced phase separation for the separation of metal salts and sucrose. By using non-solvent induction phase separation (NIPS), it has succeeded in preparing new members of mixed matrix PVDF membrane with (i) asymmetry pore structure, (ii) porosity 7.19%-18.93%, (iii) pore size 0.196 nm-0.453 nm and (iv) mechanical strength 4262.04-24472.57 N/m2, (vi) permeability respectively of 500.48 L/m2.h.bar for C12H22O11; 642.94 L/m2.h.bar for NaCl; 623.64 L/m2.h.bar for MgCl2; 1060.39 L/m2.h.bar for CaCl2; and 1292.85 L/m2.h.bar for CuSO4. Specifically, increasing PEI levels up to 2(wt.%) - 8 (wt.%) has reduced overall porosity and pore size, thus having a specific impact on mechanical strength, pure water permeability (PWF) and the permeability of the feed solution. The opposite phenomenon is observed when the PEI level reaches 10 (wt.%) - 14 (wt.%). Furthermore, compared to pure PEI membranes, PVDF/PEI composite membranes were observed to have a higher resistance to acids and lower to bases. This condition applies in contrast to pure PVDF membranes. Despite having moderate chemical resistance, PEI/PVDF membranes have excellent characteristics and separation performance compared to pure membranes. This demonstrates its promising potential for separation of soluble metal salts and sucrose produced by various industrial processes compared to PVDF and PEI membranes.

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Effect of hydrophobic alkyl chains on the plasticization properties of citrate: Experiments and MD simulation

Yuan,

Gao,

Liu

et al. 2024

European Polymer Journal

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Mechanical properties of amorphous PEI, PES, and PVC up to 11 GPa studied by Brillouin light scattering

Cited by 8 publications

References 32 publications

Advancements in Novel Mechano-Rheological Probes for Studying Glassy Dynamics in Nanoconfined Thin Polymer Films

Advancements in Novel Mechano-Rheological Probes for Studying Glassy Dynamics in Nanoconfined Thin Polymer Films

Development of a New Polymer Membrane: Polyvinylidene fluoride/Polyetherimide Blend Membrane

Effect of hydrophobic alkyl chains on the plasticization properties of citrate: Experiments and MD simulation

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Mechanical properties of amorphous PEI, PES, and PVC up to 11 GPa studied by Brillouin light scattering

Cited by 8 publications

References 32 publications

Advancements in Novel Mechano-Rheological Probes for Studying Glassy Dynamics in Nanoconfined Thin Polymer Films

Advancements in Novel Mechano-Rheological Probes for Studying Glassy Dynamics in Nanoconfined Thin Polymer Films

Development of a New Polymer Membrane: Polyvinylidene fluoride/Polyetherimide Blend Membrane

Effect of hydrophobic alkyl chains on the plasticization properties of citrate: Experiments and MD simulation

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Mechanical properties of amorphous PEI, PES, and PVC up to 11 GPa studied by Brillouin light scattering