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

Metsähovi Radio Observatory, Joni Tammi
Research & Art Published:

Three fascinating facts about space – which mystery would space researcher Joni Tammi like to understand?

When Joni Tammi was on the first grade, he gave his first school presentation about stars. It started a journey that led to a career in space research. But what was the brainwave he got during his studies on a course taught by astronomer Esko Valtaoja?
computer illustration of a cut away of the donut-shaped fusion reactor, showing that it much larger tha human
Cooperation, Research & Art Published:

Aalto nuclear fusion expert becomes ITER Scientist Fellow

Dr Antti Snicker becomes the first Finnish Scientist Fellow at ITER, modelling transport of fast particles in tokamak plasmas
Marium Durrani
Research & Art, Studies Published:

Revival of garment mending: communal reskilling addresses global issues of textile waste

Dissertation of the month: Mending clothes, one of the oldest practices known to humankind, nowadays stands for global awareness of the textile waste problem.

Ääniaalto Festival III
Research & Art Published:


ÄÄNIAALTO is an annual festival of audio-visual oddity. It aims to nurture and expand the sound/new media scene in Helsinki, and provide an open culture that is accessible to anybody interested.