Polymers and Functional Interfaces

The research in our group is centered on both fundamental and applied aspects of material and surface chemistry. Our work includes studies of intermolecular and surface forces, polymers, surface functionalization, and the characterization of surface structures. We use this fundamental understanding to guide the bottom-up design of material interfaces with built-in functionalities, such as anti-icing and anti-fouling properties, tunable adhesion and lubrication, as well as advanced materials for skin and tissue adhesion in medical applications.

Research

Our research focuses on the design, synthesis, characterization, and testing of functional polymeric materials and material interfaces. We use state-of-the-art experimental techniques to investigate their structural, mechanical, wetting, and viscoelastic properties at both the molecular and macroscopic levels.

A central theme in our work is the close connection between fundamental surface science and real-world applications. This enables us to develop coatings and materials for use in adhesion, anti-icing, anti-fouling, molecular sensing, and tissue engineering.

We also host DTU SkinHub, a platform that brings together research, education, and innovation in the areas of skin adhesion, tissue adhesion, and related biomedical technologies.

 

Profile

Esben Thormann obtained his PhD in Biophysics from the University of Southern Denmark in 2006 under supervision of Professor Ole G. Mouritsen.  During his PhD he also spent seven months at the Australian National University in Canberra where he worked together with Professor Vincent Craig. 

After completing his PhD-studies and spending another year as postdoc in Denmark, Esben went to the Royal Institute of Technology in Stockholm as a Marie Curie postdoctoral fellow working with Professor Per M. Claesson for one year. The following five years Esben stayed in Stockholm, first as a senior researcher and later as Docent in surface and colloidal science.

In 2013, Esben became Associate Professor in physical chemistry at the Technical University of Denmark where his has built a research group focusing on polymers and functional interfaces. In 2018, Esben was appointed as Professor in surface physical chemistry at the same institution.

Laboratories

We have several laboratories equipped with modern facilities for investigation of materials and material interfaces:

  • Atomic force microscopy (AFM)
  • Colloidal probe station
  • Quartz crystal micro balance (QCM)
  • Spectroscopic ellipsometry
  • Asymmetrical flow field-flow fractionation (AF4)
  • Static light scattering (SLS)
  • Tensiometer – contact angles
  • Tensiometer – surface tension
  • Differential scanning calorimetry (DSC)
  • Potentiostat (impedance spectroscopy)
  • Plasma cleaner
  • Milli-Q water purification system
  • Spin coater
  • Spectrophotometer
  • Fluorospectrometer

Many different projects can be formulated based on ongoing research activities in the group and the specific interest and skills of the student. Thus, students with interest in my research field are invited to contact me (esth@kemi.dtu.dk) for a discussion about the possibility to conduct their bachelor or master project work within my group.

All positions will be announced at the central DTU webpage:

www.dtu.dk/english/career

Exceptional strong candidates for PhD or postdoc positions are welcome to send me their CV even if no jobs are currently announced.

We are thankful for the support of our research activities from:The Aage & Johanne Louis-Hansen Fund  

  • The Aage & Johanne Louis-Hansen Fund
  • Independent Research Fund Denmark
  • Innovation Fund Denmark
  • The Carlsberg Foundation
  • The Danish Maritime Fund
  • The Tokil Holm Fund
  • The Swedish Research Council, VR

Projects

Over the past 10 years, the Thormann group at DTU Chemistry has built extensive expertise and lab facilities focused on skin studies, skin models, skin adhesives, and skin sensing technologies. Our labs are specifically equipped for peel and tack tests, electrochemical analysis methods for sensing, and a range of techniques for material and surface characterization. Additionally, we have expertise in constructing skin-mimicking models that simulate sweat and moisture release, which serve as essential tools for advancing adhesive technologies in wet and dynamic environments. Recently, we have expanded our research to include bio-inspired wet adhesion and tissue adhesion, with particular relevance to applications in gastrointestinal surgery.

The knowledge and the lab facilities support both fundamental research projects and collaborative efforts with industrial partners, often in the context of successful bachelor, master, and PhD projects. The mutual interest in fundamental material development and the growing need for bio-inspired adhesives for challenging applications - such as skin adhesives and tissue adhesives for gastrointestinal surgeries - have inspired the creation of a platform for innovative research, collaboration, and new student activities. This initiative has garnered significant interest from DTU students and the support of the Aage and Johanne Louis-Hansen Foundation, leading to the establishment of SkinHub in June 2024.
DTU logo

Our research explores the fundamental behavior of polyelectrolytes  in both bulk solution and as surface-grafted layers, with a focus on understanding how ion-specific interactions and ion pairing influence their properties. We investigate how these interactions affect phase behavior, charge regulation, and structural organization of polyelectrolytes under different ionic conditions. 

A central part of the work examines how ion pairing impacts functional properties, including freezing point depression and the anti-icing performance of polyelectrolyte-based films. These studies aim to reveal how controlled ion–polymer interactions can be leveraged to design coatings and materials with enhanced resistance to ice formation under cold and humid conditions.

Our research focuses on the development of functional polymer coatings designed to control surface interactions across a range of environments. This includes anti-fouling coatings that resist the unwanted adhesion of biological or organic matter, as well as anti-icing surfaces that delay ice nucleation and reduce ice adhesion under sub-zero conditions.

We also develop coatings for biomedical applications, where tailored surface properties such as biocompatibility, anti-adhesion, and anti-coagulant behavior are essential. A common thread in these projects is the use of molecular design and surface engineering to tune interfacial properties and achieve targeted functional performance.

Group members

Alumni

  • Lorenzo Facco
    Visiting PhD-student 11.11.2024-11.5.2025
  • Saeed Zajforoushan Moghaddam
    Postdoc/senior scientist 1.6.2017 -31.12.2023, PhD-student 1.6.2014 – 31.5.2017
  • Johannes Eiler
    Postdoc 1.9.2021-31.5.2023, PhD-student 1.9.2017-31.8.2020
  • Maryam Naseri
    Postdoc 15.9.2022-31.12.2023
  • Koosha Ehtiati
    Postdoc 1.1.2021-30.9.2022, PhD-student 1.1.2018-1.1.2021
  • Robert Andrew Biro
    PhD-student 1.5.2019-30.9.2022
  • Fatemeh Keshavarzi
    PhD-student 15.8.2017-15.8.2020
  • Daniel Hansen
    PhD-student 1.6.2017-31.5.2020
  • Tao Jiang
    PhD-student 1.3.2017-1.6.2020
  • Junhao Huang
    PhD-student 1.10.2016-1.2.2020
  • Roberto Ortiz
    Postdoc 1.11. 2014-1.6.2018
  • Xiaoyan Liu
    Postdoc 1.3.2015-1.3.2018
  • Yun Bai
    Visiting PhD-student 1.9.2017-31.8.2018
  • Khorshid Kamguyan
    IEASTE Internship 1.1.2018-30.4.2018
  • Maral Rahimi
    Visiting PhD-student 1.11.2014-1.12.2015