45 research outputs found
Effect of high-temperature annealing upon the rupture characteristics of zirconium carbide
Capillary-Gravitational Waves of Finite Amplitude on the Surface of a Homogeneous Liquid
The number of active centers and propagation rate constant in ethylene polymerization with a homogeneous catalyst based on cobalt 2,6-bis[imino]pyridyl complex with methylaluminoxane activator
Investigation of the Dependence of the Space Structure and Phase Characteristics of the First-Mode Internal Waves in the Atlantic Ocean on the Hydrological Conditions
Modelling of three-dimensional flexural oscillations of an ice cover induced by a moving load
Effect of phenyltriethoxysilane as external donor on the microstructure of ethylene-propylene copolymers
The effect of an external electron donor, namely, phenyltriethoxysilane (PES) on the compositional heterogeneity and the microstructure of ethylene-propylene copolymers prepared using a titanium-magnesium catalyst has been investigated. Addition of PES causes an increase in the average sequence length of ethylene and propylene. The products of reactivity ratios of ethylene and propylene indicate that the copolymer is blocky in nature. The external donor produces a propylene sequence in the copolymer which is richer in mmmm pentads