Titlebook: Viscosimetry of Polymers and Polyelectrolytes; Werner-Michael Kulicke,Christian Clasen Book 2004 Springer-Verlag Berlin Heidelberg 2004 Po

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书目名称Viscosimetry of Polymers and Polyelectrolytes影响因子(影响力)




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书目名称Viscosimetry of Polymers and Polyelectrolytes网络公开度学科排名




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Introduction and Objective,ying production processes are utilized in solution in diverse applications. Furthermore, it is possible, by varying the molar mass of one and the same polymer system, to tailor specifically the properties of the polymer to the area of use. Polymers are chain- or thread-shaped molecules that take on

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Basic Concepts,[N] that is exerted on the surface element A [m.] parallel to the direction of the flow: .The shear stress has the unit [Pa], which is the same as for a pressure. In former times, the unit [dyn/cm.] was often used:. The shear rate γ̇ describes how fast the fluid layers move in respect to one another

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Execution of Viscosity Measurements,des the basic safety regulations for the use of chemicals and liquids, a tidy sample preparation and a precise execution of the experiment is the prerequisite for the determination of the exact viscosimetry parameters of a polymer solution.

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The Intrinsic Viscosity,kes it difficult to interpret the viscosimetric measurements. For this reason, viscosimetric measurements are carried out with dilute sample solutions to minimize the interactions of the single polymer molecules. In this case, only the interactions between the polymer and the solvent are determined.

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A Deeper Insight into Viscosimetry,termolecular interactions between the different components can lead to an increasing, but also to a decreasing viscosity of the mixture compared to the viscosities of the single components. Listed relationships for a calculation of the viscosity of the mixture from the viscosities of the components

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A Deeper Insight into Viscosimetry,1]. The mixing rules introduced in this chapter are only valid for binary mixtures of homogeneous, completely miscible and salt free fluids. The composition of the mixtures can be indicated by different fractions, ..=mass fraction, ..=molar fraction, and .. = volume fraction, with . =1,2.

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