Polymer blends living

Confocal fluorescence microscopy has been extensively used in cell biology. Single living cells can indeed be studied by this technique visualization of organelles, distribution of electrical potential, pH imaging, Ca2+ imaging, etc. (Lemasters, 1996). Interesting applications in chemistry have also been reported in the fields of colloids, liquid crystals and polymer blends. 

The last type-11 hetero junction system that we consider is the blend of F8 and TFB. Time-resolved spectroscopy has proved to be the most sensitive tool to detect exciplex states in polymer blends and we show corresponding spectra for two different blend ratios in Fig. 2.19. No long-lived, red-shifted emission is visible at all. This is surprising because we have seen that both TFB and F8 are exciplex-form-ing molecules, i.e. significant orbital overlap between the two molecules should be possible. In the following section, we derive that the energetic conditions for exciplex formation are not met in the F8 TFB system - despite its type-II character. 

The preparation of novel solid materials is a huge field for applications such as microfiltration, separation membranes or their supports, microstructured polymer blends, and porous microcarriers for the culture of living cells and enzymes. The considerable progress accomplished over the last four years makes it possible to envision many future developments. Some attempts for specific applications have already been made as shown below. 

Polymers, polymer blends, polymer composites and filled polymers form the basis of polymer material science - the science of materials, investigation methods and control of their properties. As it is commonly known, the development of mankind passed through several important epochs. A man lived in the Stone Age, then in the Bronze Age, and later on in the Iron Age. Now we live in the Polymer Age, which is proved by some economic reasons. If we estimate the worldwide industrial production of polymers (both synthetic and natural) not by weight, but by volume, we ll get total amount of cast iron, steel, rolled stock and nonferrous metal production that reaches 400x10 m. Hence, dynamics of the process is also important, because polymer production development is 15 - 20% more intensive than development of the metal industry. Such huge production put forward the tasks of improving quality of articles from polymers and extending the field of their application, because even a small enhancement (for instance, extension of reliable operation time of polymeric articles) appears a very important economic question. 

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