A dielectric study on the local dynamics of miscible polymer blends: poly(2-chlorostyrene)/poly(vinyl methyl ether)

Urakawa, Osamu; Fuse, Yasuro; Hori, Hironobu; Tran-Cong, Qui; Yano, Okihito

doi:10.1016/s0032-3861(00)00370-0

Cited by 78 publications

(122 citation statements)

References 22 publications

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“…These validity and limitation have been confirmed for a wide variety of miscible blends [5,6,[10][11][12][13]. In particular, the work by Lutz and coworkers [12] indicated that the self-concentrated volume fraction f self of a given component (that describes T g,eff of this component) changes its value according to the mixing partner.…”

mentioning

confidence: 84%

“…Validity of this Lodge-McLeish expression has been extensively tested [5,6,[10][11][12][13]. As an example, Fig.…”

Section: Self-concentrationmentioning

confidence: 99%

“…As an example, Fig. 2 shows the results of the test reported by Urakawa and coworkers [10] for miscible blends of poly(2-chlorostyrene) (P2CS; M P2CS ¼ 4.5 Â 10…”

Section: Self-concentrationmentioning

confidence: 99%

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Dynamic Heterogeneity in Polymer Blends

Takahashi

2013

Encyclopedia of Polymeric Nanomaterials

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mentioning

confidence: 84%

“…Validity of this Lodge-McLeish expression has been extensively tested [5,6,[10][11][12][13]. As an example, Fig.…”

Section: Self-concentrationmentioning

confidence: 99%

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Dynamic Heterogeneity in Polymer Blends

Takahashi

2013

Encyclopedia of Polymeric Nanomaterials

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“…The solution was freeze-dried and then annealed at ca 373 K for 2 days. Afterwards, the samples were meltpressed at 373 K. The glass transition temperature of blends with 50/ 50 wt% is 292 K according to the literature (Urakawa et al, 2001). Some blends were irradiated by an electron beam accelerator (3 MeV, 25 mA) with an acceleration energy of 2 MeV, a beam current 1 mA, and a dose rate of 10 kGy per pass.…”

Section: Sample Preparation and Characteristicsmentioning

confidence: 99%

“…In the analysis below, the excess scattering was excluded. The measurement temperature is between the T g of P2CS (402 K) and that of PVME (247 K) (Urakawa et al, 2001), where the intrinsic mobility of each component is expected to be quite different, and larger than the glass transition temperature of the blend (292 K; Urakawa et al, 2001). As shown in Fig.…”

mentioning

confidence: 99%

Structural development of dynamically asymmetric polymer blends under uniaxial stretching

Takeno¹,

Uehara²,

Murakami³

et al. 2007

J Appl Cryst

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The time-resolved small-angle X-ray scattering technique was used to investigate the structural change during uniaxial stretching of dynamically asymmetric polymer blends irradiated by an electron beam. The concentration fluctuations were enhanced by stretching and became large in particular along the direction of deformation. In the early stages of the stretch-induced enhancement of concentration fluctuations, the growth rate of their q-Fourier mode was found to have a maximum at a certain value of q [= (4/)sin(/2), where and are the scattering angle and the wavelength of the X-rays, respectively]. A dominant mode in the enhancement of concentration fluctuations exists in the initial stage, like the early stage of spinodal decomposition for fluid mixtures. The viscoelastic effects of the growth rate were taken into consideration, so that for blends irradiated by an electron beam, elastic effects are found to significantly suppress the growth rate of concentration fluctuations at small wavenumbers.

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Dispersion of the Structural Relaxation and the Vitrification of Liquids

Kia

Casalini

Capaccioli

et al. 2006

Advances in Chemical Physics

107

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A. Pressure Dependence of t JG B. Invariance of t JG to Variations of T and P at Constant t a C. Non-Arrhenius Temperature Dependence of t b Above T g D. Increase of t b on Physical Aging E. JG Relaxation Strength and Its Mimicry of Enthalpy, Entropy, and Volume F. The Origin of the Dependences of Molecular Mobility on Temperature, Pressure, Volume, and Entropy is in t JG or t 0 VI. The Coupling Model A. Background B. The Correspondence Between t 0 and t JG C. Relation Between the Activation Enthalpies of t JG and t a in the Glassy State D. Explaining the Properties of t JG E. Consistency with the Invariance of the a-Dispersion at Constant t a to Different Combinations of T and P F. Relaxation on a Nanometer Scale G. Component Dynamics in Binary Mixtures H. Interrelation Between Primary and Secondary Relaxations in Polymerizing Systems I. A Shortcut to the Consequences of Many-Molecule Dynamics and a Pragmatic Resolution of the Glass Transition Problem VII. Conclusion Acknowledgments References dispersion of the structural relaxation kia l. ngai et al. dispersion of the structural relaxation kia l. ngai et al. dispersion of the structural relaxation 504 kia l. ngai et al. dispersion of the structural relaxation kia l. ngai et al. dispersion of the structural relaxation dispersion of the structural relaxation dispersion of the structural relaxation dispersion of the structural relaxation dispersion of the structural relaxation kia l. ngai et al.

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A dielectric study on the local dynamics of miscible polymer blends: poly(2-chlorostyrene)/poly(vinyl methyl ether)

Cited by 78 publications

References 22 publications

Dynamic Heterogeneity in Polymer Blends

Dynamic Heterogeneity in Polymer Blends

Structural development of dynamically asymmetric polymer blends under uniaxial stretching

Dispersion of the Structural Relaxation and the Vitrification of Liquids

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