Vincent J. McBrierty's Nuclear Magnetic Resonance in Solid Polymers (Cambridge PDF

By Vincent J. McBrierty

ISBN-10: 0511525273

ISBN-13: 9780511525278

ISBN-10: 0521031729

ISBN-13: 9780521031721

ISBN-10: 0521301408

ISBN-13: 9780521301404

This ebook is an authoritative and finished account of the foundations and perform of recent NMR spectroscopy of reliable polymers to figure out their constitution and dynamics at a molecular point. The publication offers with the advance of many new NMR services, together with high-resolution options for solids, multi-dimensional tools, deuterium NMR and others. All of those advancements have contributed to a dramatic raise within the energy and applicability of NMR for the characterization, at a molecular point, of the dynamics and structural association of polymeric solids. A bankruptcy on purposes emphasizes polymer varieties and homes, and the authors contain an advent to all of the major rules of NMR fascinated about its software to good polymers.

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Additional resources for Nuclear Magnetic Resonance in Solid Polymers (Cambridge Solid State Science Series)

Example text

In the polymer, the tube may be thought of in terms of the topological constraints imposed by neighbouring molecules. 4. Schematic diagram of a polymer chain confined within a hypothetical tube as visualised in the reptation model. Within the tube, the polymer can undergo motion activated by defect propagation while the tube itself is presumed to behave like a random coil. In developing further these introductory ideas, it is pertinent to review the way in which NMR relates to other experiments.

NMR in bulk matter involves probing, and sometimes modifying, the nuclear magnetic properties of samples containing large numbers (typically ^ 1019) of magnetic nuclei, using one or more frequencies of radiation which are close to the natural frequencies of motion of the spins. Normally, the spins are subjected to a dominant, static interaction such as a coupling with an externally applied magnetic field B o . This coupling is known as the Zeeman interaction and, to a first approximation, generally determines the energy states of the system.

It may be noted in passing that the ease with which temperature can be varied over a wide range in conventional low-resolution experiments has yet to be matched in the more sophisticated methodology. Having extracted meaningful correlation frequencies as a function of temperature from the available body of experimental relaxation data, the results are compiled as plots of log vc (or TC) versus inverse temperature. The family of plots for a given polymer is referred to as a transition map, a typical example of which is portrayed in fig.

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Nuclear Magnetic Resonance in Solid Polymers (Cambridge Solid State Science Series) by Vincent J. McBrierty


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