The effect of deuteration on the phase equilibrium of the polystyrene/poly(vinyl methyl ether) blend system

Yang, Hsinjin; Hadziioannou, Georges; Stein, Richard S.

doi:10.1002/pol.1983.180210112

Cited by 66 publications

(30 citation statements)

References 16 publications

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“…Theory predicts phase separation (with UCST) for a blend of hydrogenated with deuterated polymer (Buckingham and Hentschel 1980;Edwards 1983;Honeycutt 1992a, b); see also Fig. 2.7, a behavior that has been experimentally observed in multiple systems (Eitouni 2007): Phase separation of poly-1,4-butadiene with its deuterated analog confirmed the prediction (Bates et al 1985Bates and Wilzinius 1989;Schelten et al 1977;Yang et al 1983;Atkin et al 1984). Similarly, blends of hydrogenated with deuterated PDMS show immiscibility (Lapp et al 1985).…”

Section: Binary Systemsmentioning

confidence: 60%

Thermodynamics of Polymer Blends

Manias

Utracki

2014

Polymer Blends Handbook

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Section: Binary Systemsmentioning

confidence: 60%

Thermodynamics of Polymer Blends

Manias

Utracki

2014

Polymer Blends Handbook

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“…Die Phasendiagramme dieser Mischungen wurden bis auf eine einzige noch zu besprechende Ausnahme aus der visuell beobachteten oder mittels Lichtstreuungsuntersuchungen gemessenen Triibung ermittelt [1][2][3][4][5][6][7][8][9][10][11][12][13]. Die Phasendiagramme dieser Mischungen wurden bis auf eine einzige noch zu besprechende Ausnahme aus der visuell beobachteten oder mittels Lichtstreuungsuntersuchungen gemessenen Triibung ermittelt [1][2][3][4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionunclassified

CPS 758 Untersuchung des Mischungsgleichgewichts bin�rer Polymermischungen

Illers

Heckmann

Hambrecht

1984

Colloid & Polymer Sci

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The phase diagram of a binary polymer blend can be derived from the glass temperatures Tg of the demixed phases under the following conditions:1. The Tg's of the pure components are sufficiently different from one another. 2. The Tg's of the one-phase homogeneous mixtures can be determined and vary monotonically with composition.3. The equilibrium state of the mixture is attained after sufficient long annealing at temperature T.4. The equilibrium state at the temperature T can be frozen by quenching. These conditions are examined for mixtures of polystyrene (PS) and tetra methyl-bisphenol A-polycarbonate (TMPC). The phase separation kinetics is investigated with respect to size and composition of the co-existing phases. The co-existance curves (binodal with lower critical point) are determined for mixtures with various molar masses of the PS component. The problems concerning the cloud point curves are shortly discussed.Between Ts and the binodal the one-phase mixtures exist in a hindered thermodynamic state, because the crystallization of the TMPC component is a very slow process which requires very long annealing. With increasing amounts of PS in the mixture the crystallization half time of TMPC is lowered.

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“…"'O Recent papers have examined in detail the neutron scattering from blend systems and shown how to separate and analyze the molecular conformation and interaction terms.11-13 One problem which has been brought to light is the effect of the deuterated molecules on the phase behavior. For oligomeric mixtures of polystyrene with polybutadiene the compatibility is reduced and the UCST raised by about 20 "C when either 0024-9297/84/2217-2197$01.50/0 16 Observations in our laboratory indicated that the effect of deuteration is not always as large as for these systems and when strong specific interactions are involved, may indeed be negligible.…”

Section: Introductionmentioning

confidence: 92%

Molecular conformation and interactions in oligomeric mixtures of poly(ethylene glycol) and poly(propylene glycol) methyl ethers: a small-angle neutron scattering study

Higgins¹,

Carter²

1984

Macromolecules

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Small-angle neutron scattering measurements are reported from poly(propy1ene glycol) methyl ether (PPGM) molecules of molecular weight 2100 in binary blends with poly(ethy1ene glycol) methyl ethers of molecular weight 600. It is shown that the PPGM molecules vary little in average dimensions as their concentration in the blend decreases. Data at two volume fractions are analyzed to obtain values of the interaction parameter from the concentration fluctuation contribution to the scattering. Differences between these values and those obtained from heat of mixing measurements are discussed in terms of entropic contributions to the free energy of mixing.

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The effect of deuteration on the phase equilibrium of the polystyrene/poly(vinyl methyl ether) blend system

Cited by 66 publications

References 16 publications

Thermodynamics of Polymer Blends

Thermodynamics of Polymer Blends

CPS 758 Untersuchung des Mischungsgleichgewichts bin�rer Polymermischungen

Molecular conformation and interactions in oligomeric mixtures of poly(ethylene glycol) and poly(propylene glycol) methyl ethers: a small-angle neutron scattering study

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