Now showing items 51-60 of 63
Microstructural deformation behaviour in polystyrene-based compatible polymer blend systems
(Elsevier, 1994-05)
Microstructural deformation behaviour in polystyrene-based compatible polymer blend systems was studied using transmission electron microscopy (TEM) and microdensitometry. Four different binary compatible blend systems ...
Temperature and concentration dependence of diffusion coefficient in dilute solutions
(Elsevier, 1981-09)
Temperature and molecular weight dependence of kD in D(C) = D(O) [1 + CkD], where D(C) is the diffusion coefficient for the density fluctuations in a dilute polymer solution, is investigated by first expressing D(C) as a ...
Mechanical properties of polyurethane/montmorillonite nanocomposite prepared by melt mixing
(Wiley Subscription Services, Inc., A Wiley Company, 2007-10-05)
Nanocomposites from polyurethane (PU) and montmorillonite (MMT) were prepared under melt-mixing condition, by a twin screw extruder along with a compatibilizer to enhance dispersion of MMT. MMT used in this study was ...
Performance characteristics of a new prototype for a portable GC using ambient air as carrier gas for on-site analysis
(WILEY-VCH Verlag, 2007-05)
The performance characteristics of a portable GC instrument requiring no compressed gas supplies and using relatively lightweight transportable components for the analysis of volatile organic components in large-volume air ...
Toughening mechanisms in thermoplastic-modified epoxies: 1. Modification using poly(phenylene oxide)
(Elsevier, 1993-09)
An epoxy based on the diglycidyl ether of bisphenol A (DGEBA) has been modified with poly(phenylene oxide) (PPO) and cured with piperidine. A two-phase alloy resulted, in which the DGEBA epoxy was the continuous phase. ...
Thermal effects in styrene-butadiene rubber at high hydrostatic pressures
(Elsevier, 1986-12)
The temperature changes as a result of rapid hydrostatic pressure applications are reported for unvulcanized styrene-butadiene rubber (SBR) in the reference temperature range from 292 to 405 K and in the pressure range ...
Fatigue craze initiation in polycarbonate: study by transmission electron microscopy
(Elsevier, 1994-08)
Fatigue craze initiation in bulk, amorphous polycarbonate (PC) is investigated by means of transmission electron microscopy. The results agree very well with small angle X-ray scattering measurements of the same set of ...
Three-dimensional solubility parameters and chemical protective clothing permeation. I. Modeling the solubility of organic solvents in Viton® golves
(Wiley Subscription Services, Inc., A Wiley Company, 1993-10-15)
A model based on the polymer solution theory of Flory and Rehner is presented for estimating the solubility of organic solvents in chemical protective clothing (CPC) polymers using three-dimensional (3-D) solubility ...
Fracture behavior of glass bead filled epoxies: Cleaning process of glass beads
(John Wiley & Sons, Inc., 2001-02-22)
Inorganic particles are commonly cleaned with solvents such as alcohols before being incorporated into thermoset polymers as fillers or tougheners, but the role of the cleaning process has never been examined. In this ...
Rheological behavior of solutions of amphiphilic acrylic copolymers in mixed solvents
(Wiley Subscription Services, Inc., A Wiley Company, 1996-06-13)
A descriptive model was developed, using viscometry and light scattering, that explains the anomalous rheological behavior of solutions of amphiphilic acrylic copolymers upon the addition of water. The rheological behavior ...