Defence of dissertation in the field of engineering physics, Maria Morits, M.Sc.

Surface engineering – a versatile tool for the fabrication of functional nanomaterials and tough nanocomposites

Surface engineering – a versatile tool for the fabrication of functional nanomaterials and tough nanocomposites

Maria Morits, M.Sc., will defend the dissertation "Surface Engineering of Nanomaterials for Biomimetic and Hybrid Applications" on 21 June 2018 at 12 noon at the Aalto University School of Science, lecture hall TU1, Maarintie 8, Espoo. The thesis is devoted to surface engineering of nanomaterials. It includes exploration of possibilities and limitations of grafting of well-defined polymer brushes from cellulose nanocrystals and preparation and characterization of bulk nacre-mimetic clay-polymer nanocomposites.

Surface engineering opens great opportunities both in the field of nanocomposites through enhancement of compatibility of their components and in the field of functional nanomaterials by development of various topographies and obtaining of new physical and chemical properties of nanoobjects.

Cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) are important classes of nanomaterials because of their abundance, eco-friendliness and excellent mechanical properties. Therefore, most attention in this thesis was paid to the grafting of well-defined polymer brushes from the surfaces of CNCs and CNFs and studying both opportunities and limitations of this approach. Surface engineering based on using of polymer brushes allows obtaining of 3D topographies or synthesis of uniform inorganic shell on the surfaces of CNCs which are of interest for the variety of applications.

In recent decades many attempts have been made to create nacre-mimetic composite materials due to exceptional mechanical properties of nacre. However, nacre-mimetic nanocomposites were limited to thin films, while study of fracture mechanics of materials requires bulk samples. This thesis filled this gap and considered preparation and characterization of bulk nacre-mimetic nanocomposites.

Opponent: Associate Professor Emily Cranston, McMaster University, Canada

Custos: Professor Olli Ikkala, Aalto University School of Science, Department of Applied Physics 

  • Published:
  • Updated:
URL copied!

Related news

Iiris Sundin katselee taivaalle Laajalahden lintutornilla
Research & Art, Studies Published:

When physician and AI work together, the patient benefits

Doctoral student Iiris Sundin learned in her studies that a machine learning model could make use of a physician's silent knowledge which usually is never written down. This kind of model predicts best how a given patient will react to specific treatment.
Head of Post-Award Services Jukka Hyvönen and Head of Pre-Award Services Sanna-Maija Kiviranta
Appointments, Research & Art Published:

New Service Heads at Research Services

Sanna-Maija Kiviranta has been appointed as Head of Pre-Award Services and Jukka Hyvönen has been appointed as Head of Post-Award Services. Both teams support Aalto University's researchers in research funding.
A false colour electron microscope image of the bolometer, the scale bar shows a single bacteria, indicating how small the device is
Research & Art Published:

Radiation detector with the lowest noise in the world boosts quantum work

The nanoscale radiation detector is a hundred times faster than its predecessors, and can function without interruption
The details avaiable on the page in a picture with a colourful cartoon of an antropomorphic qubit
Campus, Research & Art Published:

From quantum gateways to super-refrigerators – the quantum technology revolution arrives in Otaniemi

An exhibition uncovering the secrets of quantum technology is opening on 17 October as part of the quantum technology summit