Physik der weichen Materie

Lehrveranstaltungen mit Beteiligung der Arbeitsgruppe

Ausgeschriebene Angebote für Abschlussarbeiten an der Arbeitsgruppe

Molekulare Flaschenbürsten

Molecular brushes are composed of a polymer backbone grafted densely by polymeric side arms. In solution, factors that can influence the molecular size and shape include the molar masses of the backbone and the side arms, polymer concentration and temperature.

In this bachelor thesis, a series of molecular brushes, differing in the molar mass of the backbone and side arms, will be investigated in solution. The aim is to determine the dependence of the molecular size on the concentration using dynamic light scattering (DLS).

After a literature research, samples will be preopared and measured, and data analysis will be carried out. For more information, please contact Prof. Christine Papadakis, papadakis@tum.de.

geeignet als

• Bachelorarbeit Physik
• Bachelorarbeit Lehramt Physik

Themensteller(in): Christine Papadakis

Nanopartikel aus schaltbaren Polymeren

Switchable nanoparticles in aqueous solution can be used for transport and release of drugs or other substances. They may be formed by block copolymers having a  hydrophobic block and a thermo-responsive block. The size and solubility of the self-assembled nanoparticles is controllable by changing the temperature or the solvent composition.

In the bachelor thesis, the main goal is to investigate the phase behavior of novel, self-assembling block copolymers by differential scanning calorimetry (DSC). The effect of both, the chemical nature of the responsive block and the solvent composition will be studied.

After a literature research, samples will be prepared and measured, and data analysis will be carried out. For more information, please contact Prof. Christine Papadakis, papadakis@tum.de.

geeignet als

• Bachelorarbeit Physik
• Bachelorarbeit Lehramt Physik

Themensteller(in): Christine Papadakis

Nanostrukturierte dünne Filme aus responsiven Polymeren

Responsive Blockcopolymere mit hydrophoben Endblöcken und hydrophilen Mittelblöcken (Telechele) zeigen großes Potential für die Anwendung in intelligenten Membranen, Gelen und selbstheilenden Materialien. Durch Verwendung von responsiven Blöcken hängen die Eigenschaften des Telechels stark von Parametern wie dem pH-Wert und der Temperatur ab.

In dieser Bachelorarbeit soll ein solches Polymer im dünnen Film untersucht werden. Es soll zunächst ermittelt werden, wie dünne, defektfreie Filme präpariert werden können. Diese sollen mit verschiedenen Methoden charakterisiert werden. Anschließend wird das Quellverhalten der Filme in Wasserdampf durch Messung der spektralen Reflexion bestimmt.

Nach einer Literaturrecherche sollen die Probenpräparation, die Messungen und die Datenanalyse durchgeführt werden. Für weitere Informationen melden Sie sich bitte bei Prof. Christine Papadakis, papadakis@tum.de.

geeignet als

• Bachelorarbeit Physik
• Bachelorarbeit Lehramt Physik

Themensteller(in): Christine Papadakis

Polymere in tief eutektischen Lösungsmitteln

Deep eutectic solvents (DES) are a new class of designer solvents composed of hydrogen bond donor and hydrogen bond acceptor molecules. The mixture has a substantially lower melting point than the pure substances and remains liquid at room temperature. They may be called "green solvents". In the master thesis proposed, thermoresponsive polymers shall be studied in these solvents. In water, these are soluble up to a certain temperature, above which, they become water-insoluble. Since this behavior is strongly related to hydrogen bonds, new insight can be gained by using hydrogen bonding solvent.

In the thesis, the solubility behavior of switchable polymers in DES shall be studied using turbidimetry, dynamic light scattering and small-angle X-ray scattering. After a literature research, the sample preparation, measurement and data analyis shall be carried out. For more information, please contact Prof. Christine Papadakis, papadakis@tum.de.

geeignet als

• Masterarbeit Physik der kondensierten Materie
• Masterarbeit Applied and Engineering Physics

Themensteller(in): Christine Papadakis

Responsive Blockcopolymere unter Druck

Responsive polymers are water-soluble at low temperatures, but become water-insoluble above a certain temperature, the so-called cloud point, and form large aggregates. Applying pressure, their hydration behavior can be modified, which, in turn, allows controlling their aggregation behavior.

In the bachelor project, the phase behavior and the self-assembly behavior of novel self-assembling thermoresponsive block copolymers shall be investigated under high pressure using turbidimetry and dynamic light scattering.

After a literature research, samples will be prepared and measured, and data analysis will be carried out. For more information, please contact Prof. Christine Papadakis, papadakis@tum.de.

 

geeignet als

• Bachelorarbeit Physik
• Bachelorarbeit Lehramt Physik

Themensteller(in): Christine Papadakis

Abgeschlossene und laufende Abschlussarbeiten an der Arbeitsgruppe