Objective
The main goals of the Project are following: to use anionic and cationic polymerisations for the synthesis of new amphiphilic and non-amphiphilic linear and star-shaped AB and ABC block- copolymers to be of use as surfactants, compatibilizers, thermoplastic elastomers, for membrane formation; to compare the behaviour of star-shaped block copolymers with that of linear analogues in order to determine whether branching provides superior mechanical properties and processability; to find conditions of formation of linear, branched and hyper branched polymers by anionic polymerisation of p- chloromethylstyrene; to investigate self-assembly of amphiphilic (ionic/non-ionic) block copolymers in aqueous solution and their ability to form complexes with oppositely charged homo- polyelectrolytes and surfactants; to perform a theoretical analysis of MWD and architecture of hyper branched polymers in complex systems taking account of the presence of different types of reactive sites in the monomer molecules and to perform quantum-chemical calculations on the structure, reactivity and selectivity of active centres involved in the synthesis discussed above.
The long-term objective of the investigation is to develop new procedures for the synthesis of polymers with controlled structure. The following main directions of research activity are planned:
Synthesis of a new family of polyisobutylene-based amphiphilic and non-amphiphilic linear and star-shaped block copolymers by using a new active site transformation technique recently developed in Mainz;
Synthesis and characterization of star-shaped styrene- butadiene-MMA and styrene-butadiene-(methacrylic acid) triblock use of hexacarbanionic initiator developed by Bordeaux group or by a multifunctional linking agent;
Synthesis of new non-ionic amphiphilic block copolymers containing a polydimethylacrylamide block connected with blocks of non-polar monomers;
Study of anionic polymerization of p-chlorostyrene to form linear to hyper branched homo- and copolymers; kinetic and quantum-chemical calculations necessary for better understanding and control of the processes under study. Characterization of water-soluble block-copolymers synthesized within this project, to study of their ability to interact with oppositely charged high- and low-molecular weight electrolytes with the goal to obtain a new family of hydrophobically modified interpolyelectrolyte complexes;
The main results of the project will lead to the development of new synthetic procedures for preparing materials with essentially new properties and: on the other hand, they will broaden our knowledge about kinetics, mechanism, and reactivity in anionic polymerisation.
Topic(s)
Call for proposal
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95440 Bayreuth
Germany