Miscibility studies of polyimide/poly(ether imide) molecular composites

Fukai, Tomohiro; Yang, Jen Chang; Kyu, Thein; Cheng, Stephen Z. D.; Lee, S.K.; Hsu, Steve Lien Chung; Harris, Frank W.

doi:10.1016/0032-3861(92)90646-e

Cited by 26 publications

(6 citation statements)

References 12 publications

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“…Helminiak presented the concept of a molecular composite [2][3] as a miscible blend of a flexible polymer molecularly reinforced by the rigidrod polymer. The concept was further developed by Takayanagi [4][5] ; and Fukai et al developed a miscible molecular composite 6 . The subject has been reviewed [7][8] .…”

Section: Concept Of Tercet Molecular Nanocompositementioning

confidence: 99%

“…Homogeneous morphology and dispersion of PPTA in [PA-6/PA-6,6] below 5 nanometre level has been established by scanning electron microscopy. Intermolecular interactions dispersing PPTA in 6] below the 5 nm level by imparting miscible homogeneous morphology and have been identified by Fourier transform infra red (FTIR) spectroscopy. Improved tensile mechanical properties of the tercet molecular nanocomposite, compared to those of the constituent flexible polymer blend, have been established by universal testing machine.…”

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Concept of Tercet Molecular Nanocomposites and Preliminary Studies on [Ppta/(Pa-6/Pa-66)] System of Miscible Blend of Polyamide-6/ Polyamide-6,6 Molecularly Reinforced at Nano Level by Poly(P-Phenylene-Terephthalamide)

Palsule

Baijal

Bhati

2015

Polymers and Polymer Composites

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A tercet molecular nanocomposite is a ternary miscible polymer system in which a miscible blend of two flexible polymers is molecularly reinforced at nanometre level by a rigid-rod macromolecule and the tercet molecular nanocomposite demonstrates properties better than those of the constituent flexible polymers and their blend. A tercet molecular nanocomposite of a blend of flexible polyamide-6 (PA6) and polyamide-6,6 (PA6,6) molecularly reinforced at the nanometre level by a rigid-rod poly-p-phenylene-terephthalamide (PPTA) has been processed by coagulating a sulfuric acid solution of the components in water. This study reports miscibility, structure and properties of PPTA/[PA6/PA6,6] tercet molecular nanocomposites. Miscibility has been established by recording single intermediate glass transition temperatures by differential scanning calorimetry. Homogeneous morphology and dispersion of PPTA in [PA-6/PA-6,6] below 5 nanometre level has been established by scanning electron microscopy. Intermolecular interactions dispersing PPTA in [PA-6/PA-6,6] below the 5 nm level by imparting miscible homogeneous morphology and have been identified by Fourier transform infra red (FTIR) spectroscopy. Improved tensile mechanical properties of the tercet molecular nanocomposite, compared to those of the constituent flexible polymer blend, have been established by universal testing machine.

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Section: Concept Of Tercet Molecular Nanocompositementioning

confidence: 99%

mentioning

confidence: 99%

Concept of Tercet Molecular Nanocomposites and Preliminary Studies on [Ppta/(Pa-6/Pa-66)] System of Miscible Blend of Polyamide-6/ Polyamide-6,6 Molecularly Reinforced at Nano Level by Poly(P-Phenylene-Terephthalamide)

Palsule

Baijal

Bhati

2015

Polymers and Polymer Composites

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“…Recently, aliphatic and/or alicyclic PIs have been highlighted for their applications in optoelectronics (as substrates for displays) and nanoelectronics (as interinsulating layers) because of their higher transparency and lower relative permittivity when compared with those of aromatic PIs [15–18]. However, the thermal stability of aliphatic PIs needs to be improved to the level of aromatic PIs to assure the reliability of the tested devices [19–21].…”

Section: Introductionmentioning

confidence: 99%

Effects of the aliphatic/aromatic structure on the miscibility, thermal, optical, and rheological properties of some polyimide blends

Cosutchi¹,

Nica²,

Hulubei³

et al. 2012

Polymer Engineering & Sci

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Two binary polyimide (PI) blends having a common monomer (diamine or dianhydride) were prepared. The first system was composed of PIs obtained from an alicyclic and flexible dianhydride, namely 5‐(2,5‐dioxotetrahydrofurfuryl)‐3‐methyl‐3‐cyclohexene‐1,2‐dicarboxylic acid anhydride (DOCDA) and two aromatic diamines: 4,4′‐oxydianiline (ODA) and p‐phenylenediamine, respectively. In the second system, ODA was combined with DOCDA and (hexafluoroisopropyldiene)diphthalic dianhydride (6FDA). Films of the resulted blends were transparent, suggesting their homogeneity. According to differential scanning calorimetry data, the existence of a single Tg intermediate to those of the pure PIs confirmed the miscibility of blends. Incorporation of aliphatic and asymmetric DOCDA moieties, hexafluoropropyldiene groups and ether linkages in the molecular structure of PIs reduced the charge transfer interactions and significantly increased transparency and optical gap energy, especially for the poly(DOCDA‐ODA)/poly(6FDA‐ODA) blend. These interactions are also reflected in viscosity dependence on shear rate, indicating that they are slightly stronger when the aromatic 6FDA component prevails. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers

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“…Recently, aliphatic and/or alicyclic PIs have been highlighted for their applications in optoelectronics (as substrates for displays) and nanoelectronics (as interinsulating layers), due to their higher transparency and lower relative permittivity, compared to those of aromatic PIs [24–27]. However, the thermal stability of aliphatic PIs needs to be improved to the level of aromatic PIs, to assure the reliability of the tested devices [28–30].…”

Section: Introductionmentioning

confidence: 99%

Surface properties and blood compatibility of some aliphatic/aromatic polyimide blends

Nica¹,

Hulubei²,

Stoica³

et al. 2012

Polymer Engineering & Sci

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Two binary polyimide (PI) blends having a common monomer, diamine and dianhydride, were prepared. The first system was composed of PIs obtained from an alicyclic and flexible dianhydride, namely 5-(2,5-dioxotetrahydrofurfuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic acid anhydride (DOCDA) and two aromatic diamines, 4,4 0 -oxydianiline (ODA) and p-phenylenediamine (PPD), respectively. In the second system, ODA was combined with DOCDA and (hexafluoroisopropyldiene)diphtalic dianhydride (6FDA). Incorporation of aliphatic and asymmetric DOCDA moieties, hexafluoropropyldiene groups and ether linkages in the molecular structure of PI blends, poly(DOCDA/PPD)/poly(DOCDA-ODA) and poly(6FDA-ODA)/poly(DOCDA-ODA) influenced the surface tension parameters, surface and interfacial free energy, and the work of spreading of water, maintaining the surface hydrophobic characteristics of both systems. In addition, it has been found out that surface hydrophobicity and surface roughness are properties that can be correlated with the red blood cells and platelets compatibility. POLYM. ENG.

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Miscibility studies of polyimide/poly(ether imide) molecular composites

Cited by 26 publications

References 12 publications

Concept of Tercet Molecular Nanocomposites and Preliminary Studies on [Ppta/(Pa-6/Pa-66)] System of Miscible Blend of Polyamide-6/ Polyamide-6,6 Molecularly Reinforced at Nano Level by Poly(P-Phenylene-Terephthalamide)

Concept of Tercet Molecular Nanocomposites and Preliminary Studies on [Ppta/(Pa-6/Pa-66)] System of Miscible Blend of Polyamide-6/ Polyamide-6,6 Molecularly Reinforced at Nano Level by Poly(P-Phenylene-Terephthalamide)

Effects of the aliphatic/aromatic structure on the miscibility, thermal, optical, and rheological properties of some polyimide blends

Surface properties and blood compatibility of some aliphatic/aromatic polyimide blends

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