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Rheology of Industrial Polysaccharides: Theory and Applications (Paperback, Softcover reprint of the original 1st ed. 1995)
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Rheology of Industrial Polysaccharides: Theory and Applications (Paperback, Softcover reprint of the original 1st ed. 1995)
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fudustrial uses of polysaccharides centre on their ability to
thicken or structure many times their own weight of water, or in
other words to control the rheology of hydrated systems. Until
comparatively recently, however, objective characterisation of
polysaccharide rheology, except in a few specialist research
laboratories, was largely confined to compression of gels, simple
measurements of solution viscosity, often in ill-defined
geometries, and imitative tests intended to
reflectproductperformance in specific areas ofend-use. Several
factors have combined to bring a wider range of rheological
techniques into common use. One is the increasing practical
importance of systems that cannot adequately be described as solids
or liquids, such as 'weak gels' and spreadable pastes. fu parallel,
routine characterisation of such systems has become economically
feasible with the development of a new generation of comparatively
inexpensive computer-controlled instruments. There has also been a
change ofemphasis from phenomenologicaldescription ofproduct
texture towards the use of rheological measurements to probe the
underlying molecular and supramolecular structures and the
processes by which they are formed. As a result, even the most
pragmatic producers and users of industrial polysaccharides are
probably now familiar with terms such as creep compliance, stress
overshoot and the ubiquitous G' and G," although perhaps not fully
understanding their precise meaning or practical significance. A
definitive text giving a rigorous description of the rheological
approaches relevant to polysaccharide systems is therefore
appropriate and timely. Romano Lapasin and Sabrina Priel are to be
congratulated for tackling the daunting but worthwhile
taskofproducing such avolume.
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