Chemical groups creating specific

Introduction of desired chemical groups into polymer molecules to create specific chemical, physical, biological, pharmacological, or other properties. 

Chemical similarities can quite easily explain the observation of cross-allergies. Small conformational differences are enough indeed to create common epitopes (etymologically, superficial place ). An epitope is a part of molecule with a specific three-dimensional structure. One more time, we can see the importance of molecular structures in biology. Epitope is also called antigenic determinant. It can be incorporated in a macromolecular antigen by a group of specific amino acids, often exposed on the surface of the molecule (Fig. 3.27). ... 

LDPE and PVC are strongly immiscible (Table 3). There is a vast volume of literature available describing diverse physical and chemical methods for their compatibilization [37]. Plasma has proved to be an efficient method for modification of surfaces [38] and production of new polymers [39]. By means of the plasma technology appropriate chemical groups can be created, enhancing specific interactions. Plasma modification effects only a thin surface layer of the polymer, leaving the bulk of the system intact... 

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