Liquid crystal polymers (LCPs) have many strange properties that may be
utilized to advantage in the processing of products made from them and
their blends with isotropic polymers. This volume (volume 2 in the
series Polymer Liquid Crystals) deals with their strange flow behaviour
and the models put forward to explain the phenomena that occur in such
polymers and their blends. It has been known for some time that small
ad- ditions of a thermotropic LCP to isotropic polymers not only gives
an improvement in the strength and stiffness of the blend but improves
the processability of the blend over that of the isotropic polymer. In
the case of lyotropic LCPs, it is possible to create a molecular
composite in which the reinforcement of an isotropic polymer is achieved
at a molecular level by the addition of the LCP in a common solvent. If
the phenomena can be fully understood both the reinforcement and an
increase in the proces- sability of isotropic polymers could be
optimized. This book is intended to illustrate the current theories
associated with the flow of LCPs and their blends in the hope that such
an optimization will be achieved by future research. Chapter 1
introduces the subject of LCPs and describes the ter- minology used;
Chapter 2 then discusses the more complex phenomena associated with
these materials. In Chapter 3, the way in which these phe- nomena may be
modelled using hamiltonians is fully covered.