Prof. Dr. Friedlinde Götz-Neunhoeffer

FG

Prof. Dr. Friedlinde Götz-Neunhoeffer

Chair of Mineralogy

Address

Schlossgarten 5 91054 Erlangen
Room: 2.209, Floor: 02

Scopus Author ID: 9840612200
ORCID ID: 0000-0002-1163-3271

Research Focus

Research focuses on how the potential, quality and sustainability of materials can be improved for their specific application – including in building materials, refractories, bone and dental replacements:

  • hydration or reaction mechanisms are investigated experimentally using comprehensive methodology (QXRD, WF calorimetry, TGA, simulation calculations, modelling, etc.);
  • correlations in the interaction of reactive mineral phases with H2O or solutions with organic additives are clarified;
  • possibilities and materials for CO2-neutral building materials are analysed, tested and evaluated;
  • chemical stability and durability of lithium silicate glass ceramics for dental use are investigated and optimized.
 

Research projects

(since 2020)

  • Investigations of CAC-OPC-C$ mixtures: The influence of reactive calcite


    (Third Party Funds Single)
    Project leader:
    Term: 1. June 2025 - 30. June 2026
    Acronym: CAC_reactiveCc
    Funding source: Industrie
  • Accelerated conversion durability of CAC with SCM


    (Third Party Funds Single)
    Project leader:
    Term: 1. May 2024 - 31. May 2025
    Acronym: CAC_SCM
    Funding source: Industrie
  • Silica fume in LCC castables


    (Third Party Funds Single)
    Project leader:
    Term: 1. January 2023 - 31. December 2026
    Acronym: SF in LCC
    Funding source: Industrie
  • 3D printing of Li-Brushite/silk fibroin nanocomposites for bone regeneration.


    (Third Party Funds Single)
    Project leader: ,
    Term: 1. April 2022 - 31. March 2024
    Acronym: PPP-Portugal 2022-2024
    Funding source: Deutscher Akademischer Austauschdienst (DAAD)

    Bone defects resulting from trauma, tumor removal or bone infections represent a major social challenge, exacerbated by the increasing proportion of elderly patients due to steadily rising life expectancy. The most effective treatment of such bone defects to improve the quality of life of those affected is therefore of high relevance. Despite the impressive progress in the development of synthetic materials for bone regeneration, some clinical problems still remain unsolved. Therefore, the aim of the proposed research project is the development of 3D-printed nanocomposites consisting of brushite cement and silk fibroin (SF), which show high potential to fulfill the structural and biological requirements of human bone and thus to regenerate bone.


  • CO2 incorporation InoJec Systems


    (Third Party Funds Single)
    Project leader:
    Term: 1. February 2022 - 31. January 2025
    Acronym: InoJec
    Funding source: Industrie

    CO2-incorporation. Optimization of stability and determination of conversion rate of injected calcium aluminate cement mortars.

  • Development of SiO2 – Li2O – P2O5 – ZrO2 dental glass-ceramic systems with extended lifetimes: crystallization mechanisms and resistance to subcritical crack growth


    (Third Party Funds Group – Sub project)
    Overall project: Dental glass-ceramic in the system SiO2 – Li2O – P2O5 – ZrO2
    Project leader: , ,
    Term: since 1. October 2021
    Acronym: Li-Silicates
    Funding source: Deutsche Forschungsgemeinschaft (DFG)

    Classes of materials that resemble natural teeth, such as polycrystalline ceramics, glass-ceramics and ceramic-methacrylate composites, have been preferred for tooth replacement for some time.

    The first commercial product was based on a non-stoichiometric multi-component SiO2-Li2O-Al2O3-K2O-P2O5-ZrO2-ZnO system that was pre-crystallised, then melted and injected into a mould made of refractory material. The resulting glass-ceramics reached a degree of crystallisation of ~70 vol% with elongated Li2Si2O5 crystallites exhibiting very good mechanical properties.

    The research approach makes it possible to determine relationships between the mechanical properties, composition and microstructure, either in the glass-ceramic or in the residual glass.

    For this purpose, the influence of the SiO2/Li2O molar ratio on the crystallisation behaviour of Li2SiO3 and Li2Si2O5 phases is analysed and the effect of ZrO2 addition at constant SiO2/Li2O ratio on crystallisation kinetics and network structure of the residual glass is investigated.

  • Optimierung der Langzeitstabilität und Umsetzungsrate in Zweikomponentensystemen


    (Third Party Funds Single)
    Project leader:
    Term: 1. January 2020 - 31. December 2022
    Acronym: CAC-Calcite
    Funding source: Bayerisches Staatsministerium für Wissenschaft und Kunst (StMWK) (seit 2018)

Publications