Dissimilar chain extenders

Table 6. Effect of Dissimilar Chain Extenders In TPU Blends.

Thus, in the non-polar medium, due to the collapse of the otherwise partially extended peptide chain within itself, one can rationalize the steric hindrance in the polar medium, due to the collapse of the otherwise extended polystyrene backbone, some of the peptide chains can be visualized as buried and hence hindered to the approach of reagents and solvents. Thus, based on these models of polystyrene-bound peptides in different environments (Fig. 1), an ideal situation would be that where both the polymer and the peptide chains are extended. This is likely to be attained most easily if the polymer and peptide are of comparable polarities and are placed in a good solvating medium. This is in contrast to the polystyrene case where the macromolecular support is a pure hydrocarbon physicochemically quite dissimilar to the peptide chain being synthesized 44). 

The development of smart structiues, as considered in the present paper, involves the integration of piezoceramics and further dissimilar materials performing separate fimctions into one device. The focus of the present paper is given to commercial PZT ceramics, but the ideas may be extended to new piezoceramics as well. Essentially, the challenge lies in the availability of complete and adjusted manufacturing chains and in the maintenance of the properties of constituent materials during packaging into an individual unit. 

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