Search Results - "Kalogeras, Ioannis M."

Prediction of glass transition temperatures: Binary blends and copolymers by Brostow, Witold, Chiu, Rachel, Kalogeras, Ioannis M., Vassilikou-Dova, Aglaia

“…Glass transition temperature T g values characterize pure polymers, polymer blends, copolymers, as well as matrices in polymer-based composites. T g s as…”
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Glass transition temperatures in binary polymer blends by Kalogeras, Ioannis M, Brostow, Witold

“…Knowledge of the glass transition temperatures (Tgs) as function of composition reflects miscibility (or lack of it) and is decisive for virtually all…”
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A novel approach for analyzing glass-transition temperature vs. composition patterns: Application to pharmaceutical compound + polymer systems by Kalogeras, Ioannis M.

“…In medicine, polymer-based materials are commonly used as excipients of poorly water-soluble drugs. The success of the encapsulation, as well as the…”
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Contradicting perturbations of the segmental and secondary relaxation dynamics of polymer strands constrained in nanopores by Kalogeras, Ioannis M.

“…The glass transition and the sub-glassy relaxations in 1 mm bulk-like poly(methyl methacrylate) (PMMA) films and PMMA confined in ∼5 nm silica pores were…”
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Description and molecular interpretations of anomalous compositional dependences of the glass transition temperatures in binary organic mixtures by Kalogeras, Ioannis M.

“…The present study explores the applicability of a three-parameter equation: T g = φ 1 T g,1 + (1 − φ 1) T g,2 + φ 1(1 − φ 1)[ a 0 + a 1(2 φ 1–1) + a 2(2 φ 1–1)…”
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Nanoscale Confinement Effects on the Relaxation Dynamics in Networks of Diglycidyl Ether of Bisphenol-A and Low-Molecular-Weight Poly(ethylene oxide) by Kalogeras, Ioannis M, Stathopoulos, Andreas, Vassilikou-Dova, Aglaia, Brostow, Witold

“…Thermoplastic poly(ethylene oxide) (PEO) (M w(PEO) ≈ 4000) has been used to prepare thermosetting nanocomposites incorporating diglycidyl ether of bisphenol A…”
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Side-chain motions in poly(methyl methacrylate) + SiO2 hosts of fluorescent dyes studied by thermally stimulated discharge currents: effects of confinement and blending by KALOGERAS, Ioannis M

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The diverse effect of antiplasticizer in the molecular dynamics of an organic dye-doped polymer observed at different motional lengthscales by Kalogeras, Ioannis M., Pallikari, Fotini, Vassilikou-Dova, Aglaia

“…Complementary thermal analysis techniques were used to study blending-induced perturbations in polymer dynamics pertaining to different motional lengthscales…”
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Free-Space and Intermolecular Interaction Effects on the Local-Chain Rotational Relaxation Dynamics in Dye + Polymer Lasing Materials by Kalogeras, Ioannis M, Neagu, Eugen R, Vassilikou-Dova, Aglaia

“…Dielectric relaxation spectroscopy (DRS) and thermally stimulated depolarization currents (TSDC) are combined to analyze the secondary (β) side-chain…”
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Thermally stimulated currents of poly(methyl methacrylate): Comments on the molecular origin of a Debye-type signal between the α- and β-relaxation modes by Kalogeras, Ioannis M.

“…Several variants of thermally stimulated currents (TSCs) have been used to characterize an unusual room‐temperature (RT) Debye‐type relaxation mode (denoted…”
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Dielectric Probe of Intermolecular Interactions in Poly(methyl methacrylate) (PMMA) and PMMA + SiO2 Matrixes Doped with Luminescent Organics by Kalogeras, Ioannis M, Vassilikou-Dova, Aglaia

“…Modifications in the molecular dynamics of the side-chain relaxation in poly(methyl methacrylate) (PMMA) have been recorded by monitoring the thermally…”
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Dielectric properties of cured epoxy resin + poly(ethylene oxide) blends by Kalogeras, Ioannis M., Roussos, Michalis, Christakis, Iraklis, Spanoudaki, Anna, Pietkiewicz, Dorota, Brostow, Witold, Vassilikou-Dova, Aglaia

“…Epoxy resin (ER) + poly(ethylene oxide) (PEO) blends cured with 4,4′-diaminodiphenyl-methane were studied by thermally stimulated currents and dielectric…”
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Glass transitions in binary drug + polymer systems by Jayachandra Babu, R., Brostow, Witold, Kalogeras, Ioannis M., Sathigari, Sateesh

“…To evaluate miscibility, glass transition temperatures T g have been determined for two binary polymer (Plasdone S-630 copovidone or Eudragit® E) + drug…”
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Side-chain motions in poly(methyl methacrylate)+SiO 2 hosts of fluorescent dyes studied by thermally stimulated discharge currents: effects of confinement and blending by Kalogeras, Ioannis M

“…The thermally stimulated discharge (TSD) currents technique has been used to study different types of inter- and intra-molecular interactions between the…”
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Encapsulation of hydrophobic drugs in a copolymer: Glass transition behavior and miscibility evaluation by Babu, R. Jayachandra, Brostow, Witold, Fasina, Oladiran, Kalogeras, Ioannis M., Sathigari, Sateeshkumar, Vassilikou-Dova, Aglaia

“…The knowledge of glass transition temperatures Tg in drug + polymer systems is indispensable for drug encapsulation. Tg values as a function of composition…”
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Effects of blending with fluorescing molecules on the dynamics of the β , α , and α ′ relaxations observed in poly(methyl methacrylate) by Kalogeras, Ioannis M., Pallikari, Fotini, Vassilikou-Dova, Aglaia, Neagu, Eugen R.

“…Perturbations in typical dielectric or calorimetric features of the molecular relaxation dynamics in amorphous poly(methyl methacrylate) and two blends with a…”
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Thermophysical Properties and Molecular Relaxations in Cured Epoxy Resin + PEO Blends: Observations on Factors Controlling Miscibility by Kalogeras, Ioannis M., Vassilikou-Dova, Aglaia, Christakis, Iraklis, Pietkiewicz, Dorota, Brostow, Witold

“…Thermophysical properties and molecular relaxations in aromatic amine‐cured diglycidyl ether of bisphenol‐A (DGEBA) epoxy oligomer and poly(ethylene oxide)…”
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Dielectric Probe of Intermolecular Interactions in Poly(methyl methacrylate) (PMMA) and PMMA + SiO 2 Matrixes Doped with Luminescent Organics by Kalogeras, Ioannis M., Vassilikou-Dova, Aglaia

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