Titlebook: Developments in Polymer Characterisation—4; J. V. Dawkins Book 1983 Applied Science Publishers Ltd 1983 infrared spectroscopy.neutron scat

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Characterisation of Long-Chain Branching in Polymers,nd how they are connected with the LCB structure and the number of long side chains. The complications occurring with samples polydispersed in molar mass and in degree of branching are also considered.

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Book 1983ers and the last chapter describe progress in providing character­ isation information for polymers containing long-chain branching, for polymer blends, and for polymers having preferred orientation. The remaining chapters review progress in individual techniques, showing with examples the character

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Applications of Thermal Analysis to the Study of Polymer Blends,cal limitations of thermal analysis in the study of polymer blends are explored. Thermodynamic principles of blend miscibility are presented and the usefulness of thermal methods are discussed in relation to other techniques frequently used to characterise polymer blends. Examples of technically sig

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Fourier Transform Infrared Spectroscopy of Synthetic Polymers,he theoretical background and advantages of FTIR spectroscopy, the developments in data processing techniques are reviewed. The computer-assisted analysis of polymer mixtures is shown to be of value in structural and conformational studies as well as in studies of polymer blends or quantitative anal

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Dynamics of Polymers by Neutron Scattering,ations and rotations of side groups, phonon modes in crystals and high frequency conformational changes in solutions, melts and networks. The random variation in scattering power from nuclide to nuclide allows labelling techniques to be used to advantage, while the large neutron mass leads to a rela

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Ultrasonic Characterisation of Solid Polymers,applications of this method are discussed in the context of homo- and hetero-phase polymer systems. Using high frequency sound waves it is possible to sense the increase in modulus associated with fibre formation in drawn polyethylene and polypropylene. The attenuation characteristics of drawn polym

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Characterisation and Assessment of Polymer Orientation,on functions of certain structural units into infinite series of spherical harmonics. The orientation factors averaging the orientation distributions with respect to their moments of any given orders are also introduced in terms of the most general formulae. Also, the assessment of polymer orientati

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Book 1983aracterisation of branching requires the combined use of several techniques, emphasising in particular recent developments involving gel permeation chromatography. Thermal analysis and infrared spectroscopy are widely used techniques in polymer characterisation. Both techniques can provide, very qui