Heat relaxation

MicroBrownian dynamics of microemulsions can be studied by various techniques including dynamic-mechanical, dielectric, ultrasonic and NMR relaxation, ESR, volume, enthalpy and specific heat relaxation, quasielastic light and neutron scadering, fluorescence-depolarization experiments, and many other methods (90, 102-107). The information thus acquired provides an opportunity to clarify... 

Film Formation and Propoties.— Work on film preparation and subsequent processing of 2GT has been limited to studies on the transverse constriction and stresses observed during uniaxial orientation and the problems associated with the maintenance of planarity during heat relaxation. Orientation and shrinkage have been discussed in a number of papers with studies on orientational setf-ieinforcement and relaxation and its effects on orientation. The effect of the interaction of films with organic liquids has promoted studies on the structural arrangements in liquid-induced crystallization of cold-drawn 2GT films, and the effect of crystallization on adhesion and cohesion. ... 

To sum up, the Calvet calorimeter has a very simple exponential apparatus function based on the above assumptions (namely, a very small Rthi and a rapid heat relaxation inside the sample and sample container (calorimeter vessel)). The measured curve can then be desmeared in a simple and accurate maimer according to Eq. (7.9). The assumptions are complied with to some extent if Rth2 is made suitably large by an appropriate design (see Figure 7.16). The large time... 

In the wet spinning process, the spinning solution is initially pumped by a precision gear pump through a spinneret into a coagulation bath, which precipitates the polymer to form filaments. At the exit of the coagulation bath, filaments are collected in bundles of the desired thickness. The multifilament bundles are counter-currently washed in successive extraction baths to ranove residual solvent before they are stretched, dried, and heat-relaxed. 

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