Establishing the Molecular Weight and the Length of Grafted Chains of PDMS Brushes Using the Ellipsometry Method

The field of research exploring slippery covalently attached liquid surfaces (SCALS), formed with Polydimethylsiloxane (PDMS) brushes, is fairly new and is proving pivotal in creating economically feasible and non-toxic solutions to resist fouling and prevent ice adhesion. These solutions will contribute to a more sustainable future by lowering the energy expenditure required for optimal efficiency of systems such as solar panels, wind turbines and aircraft wings.

The research aims to develop a simple method to establish the molecular weight and length of grafted chains, through performing a series of in-situ ellipsometry measurements of PDMS brushes in different solvents. A series of values and swelling ratios will be compiled and compared with current polymer theory to characterize the molecular weight and length of the grafted chains of the PDMS brushes. The proposed methodology could prove to be faster, more accessible and potentially just as accurate as current methods, including AFM force measurements and neutron reflectometry. If it is found that using this expeditious process to understand the brushes’ properties is possible and accurate, designs can be created with a high degree of assurance and knowledge about how the SCALS will behave.

Faculty Supervisor:

Kevin Golovin

Student:

Partner:

University of Sydney

Discipline:

Engineering

Sector:

Education

University:

University of Toronto

Program: