By D.W. van Krevelen
This authoritative, commonly mentioned ebook has been used worldwide. The fourth variation comprises the most recent advancements within the box whereas retaining the center pursuits of prior variants: to correlate homes with chemical constitution and to explain equipment that let the estimation and prediction of numerical homes from chemical constitution, i.e. approximately all homes of the forged, liquid, and dissolved states of polymers. * extends assurance of serious themes resembling electric and magnetic homes, rheological homes of polymer melts, and environmental habit and failure* discusses liquid crystalline polymers throughout chapters 6, 15, and sixteen for higher breadth and intensity of insurance* raises the variety of helping illustrations from nearly 250 (in the former variation) to greater than four hundred to extra relief in visible figuring out
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Extra resources for Properties of Polymers, Fourth Edition: Their Correlation with Chemical Structure; their Numerical Estimation and Prediction from Additive Group Contributions
4 Example of a universal calibration curve for GPC. From Billmeyer (1984); Courtesy John Wiley & Sons. Typology of Polymers 21 Dynamic light scattering (DLS), also called photon correlation spectroscopy (PCS) or laser light scattering (LLS) is a technique based on the principle that moving objects cause a frequency shift due to the Doppler effect. If a solution of macromolecules with random Brownian motion is illuminated with monochromatic laser light, the scattered light should contain a distribution of frequencies about the incident frequency; the spectral line is virtually broadened.
1977) have performed this task in a most admirable way, as far as gases and liquids are concerned. For molecular crystals and glasses Bondi (1968) gave a similar contribution, which partly covers the polymeric field, too. In the macromolecular field the amount of literature is extremely large. Nevertheless the researcher is often confronted with the problem that neither directly measured properties, nor reliable methods to calculate them, can be found. This is the justification of the present book.
Finally there exists a structural classification on the basis of the position of the mesogenic groups; these may be found in the main chain, in the side chain or in both. 1 gives a representation of this classification. A more elaborate classification was developed by Brostow (1988). A full description of structures and textures of the most important LC phases is given by Demus and Richter (1980). Smectic phases are treated by Gray and Goodby (1984) and discotic phases by Demus (1994). Excellent reviews concerning structure–property–application relations of low and high molecular weight LC materials are presented by Meier et al.