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Surface segregation in blends of polystyrene and deuterated polystyrene
Macromolecules, 1993Surface-enhanced Raman scattering (SERS) has been used to investigate surface segregation in blends of high molecular weight polystyrene (PS) and deuterated polystyrene (DPS) (both having molecular weight 1 950 000) following annealing at temperatures above the upper critical solution temperature (UCST). Before annealing, the composition of the surface
Steven D. Smith +2 more
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Hot Stage Microscopy of Polystyrene and Polystyrene Derivatives [PDF]
, 1987 Studies of particulate polystyrene and atactic PMMA by Ueberreiter and Orthmann1 using a direct-recording mechanooptical instrument revealed an optically detectable softening process occurring above the glass transition temperature. In their apparatus, a powdered polymer sample was sandwiched between a stationary glass plate and a loaded floating glass
Raymond F. Boyer, Lisa R. Denny
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Molecular motion in polystyrene and some substituted polystyrenes
Journal of Polymer Science, 1962AbstractProton magnetic resonance spectra of nine substituted polystyrenes: polymers of o‐methyl, m‐methyl, p‐methyl, p‐chloro‐, 2,4‐dimethyl‐, α,β,β′‐trideutero‐, β‐ deutero‐, 2,6‐dimethyl‐4‐tert‐butyl‐, and p‐tert‐butylstyrene, in addition to five polystyrene samples differing in molecular weight (M̄n's from 1.25 × 105 to ∼35 × 105) or tacticity have
A. Odajima, J. A. Sauer, A. E. Woodward
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Polymer, 2006
Abstract Two-component blends of differing polystyrene (PS), one syndiotactic (sPS) and the other isotactic (iPS) or atactic (aPS), were discussed. The phase behavior, crystallization and microstructure of binary polystyrene blends of sPS/iPS and sPS/aPS with a specific composition of 5/5 weight ratio were investigated using optical microscopy (OM ...
Lee Chuan Tseng +2 more
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Abstract Two-component blends of differing polystyrene (PS), one syndiotactic (sPS) and the other isotactic (iPS) or atactic (aPS), were discussed. The phase behavior, crystallization and microstructure of binary polystyrene blends of sPS/iPS and sPS/aPS with a specific composition of 5/5 weight ratio were investigated using optical microscopy (OM ...
Lee Chuan Tseng +2 more
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Miscibility of regular multibranched polystyrene with linear polystyrene
Polymer, 1994Differential scanning calorimetry (d.s.c.) measurements on the 50/50 blends of well-defined multibranched polystyrenes and linear polystyrenes were carried out to investigate the miscibility between polymer components having the same constitutional repeating units but different molecular architectures.
Jun Inoue +3 more
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Structural Relaxation in Polystyrene and Some Polystyrene Derivatives
Macromolecules, 1996The structural relaxation process in polystyrene and three polystyrene derivatives (p-methyl, p-chloro, and p-hydroxy) at temperatures close to the glass transition temperature has been monitored b...
R. Ferguson +4 more
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Current Oscillations in Solid Polystyrene and Polystyrene Solutions
The Journal of Chemical Physics, 1965Application of a dc voltage across a plate of polystyrene gives rise to oscillatory currents which reach considerably high negative values. The dependence of current intensity (maximum, minimum, and plateau values) on various parameters (voltage, dimensions of samples and electrodes, nature of dissolved solute, etc., as well as repetitive use) is ...
A. A. Braner, A. Weinreb, N. Ohana
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1995
Publisher Summary This chapter focuses on various kinds of welding processes applicable to polystryrene polymer. Welding preference is given to ultrasonic techniques in context to Polystyrene. In spin welding, irrespective of the material involved, braking the spin with an abrupt stop always gave a higher weld quality than continuous breaking.
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Publisher Summary This chapter focuses on various kinds of welding processes applicable to polystryrene polymer. Welding preference is given to ultrasonic techniques in context to Polystyrene. In spin welding, irrespective of the material involved, braking the spin with an abrupt stop always gave a higher weld quality than continuous breaking.
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Equilibrium Swelling of Polystyrene Networks by Linear Polystyrene
Macromolecules, 2002We have measured the equilibrium swelling of polystyrene networks by linear deuterated polystyrene using the ion beam technique of helium-3 nuclear reaction analysis. These measurements enable an analysis of the swelling of networks at low degrees of swelling, and our results showed more swelling than predicted by using the usual forms of Flory−Rehner ...
Thomas Russ, Mark Geoghegan, R. Brenn
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Hydrous pyrolysis of polystyrene
Journal of Analytical and Applied Pyrolysis, 1997Thermal degradation of polystyrene has been investigated in the presence of water under subcritical conditions (hydrous pyrolysis). The experiments were carried out in closed systems under inert atmosphere, in the temperature range 300-350°C, at pressures up to 18 MPa, for 1-120 h.
PL Beltrame +5 more
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