From anionic polymerization in continuous flow to macromolecular architectures and stimuli-responsive surfaces


Autoria(s): Tonhauser, Christoph
Data(s)

2012

Resumo

The thesis can be divided in four parts and summarized as follows:(i) The investigation and development of a continuous flow synthesis procedure affording end-functional polymers by anionic polymerization and subsequent termination in one reaction step and on a multigram scale was carried out. Furthermore, the implementation of not only a single hydroxyl but multiple orthogonal functionalities at the chain terminus was achieved by utilizing individually designed, functional epoxide-based end-capping reagents.(ii) In an additional step, the respective polymers were used as macroinitiators to prepare in-chain functionalized block copolymers and star polymers bearing intriguing novel structural and material properties. Thus, the second part of this thesis presents the utilization of end-functional polymers as precursors for the synthesis of amphiphilic complex and in some cases unprecedented macromolecular architectures, such as miktoarm star polymers based on poly(vinyl pyridine), poly(vinyl ferrocene) and PEO.(iii) Based on these structures, the third part of this thesis represents a detailed investigation of the preparation of stimuli-responsive ultrathin polymer films, using amphiphilic junction point-reactive block copolymers. The single functionality at the block interface can be employed as anchor group for the covalent attachment on surfaces. Furthermore, the change of surface properties was studied by applying different external stimuli.(iv) An additional topic related to the oxyanionic polymerizations carried out in the context of this thesis was the investigation of viscoelastic properties of different hyperbranched polyethers, inspired by the recent and intense research activities in the field of biomedical applications of multi-functional hyperbranched materials.

Formato

application/pdf

Identificador

urn:nbn:de:hebis:77-39702

http://ubm.opus.hbz-nrw.de/volltexte/2015/3970/

Idioma(s)

eng

Publicador

10: Biologie. 10: Biologie

09: Chemie, Pharmazie und Geowissenschaft. 09: Chemie, Pharmazie und Geowissenschaft

04: Medizin. 04: Medizin

08: Physik, Mathematik und Informatik. 08: Physik, Mathematik und Informatik

Direitos

http://ubm.opus.hbz-nrw.de/doku/urheberrecht.php

Palavras-Chave #Polymerisation, Mikroreaktor, anionische Polymerisation #Polymerization, microreactor, anionic polymerisation #Chemistry and allied sciences
Tipo

Thesis.Doctoral