Kategorie: ‘Polycondensation resins’
Anouncement: Polymer Blends & Eurofillers
We are pleased to announce that two exciting presentations from our working group have been accepted at Polymer Blends & Eurofillers 2025 in Lyon from January 27 to 30, 2025:
Paul Marten
Development and Characterization of a Composite Material based on Polylactic Acid, Chitin, and Lecithin
and
Fabian Weitenhagen
Sustainable Biopolymer Composites Using Recycling Cellulose from Wastepaper
Take the opportunity to learn about the latest results from the working group and to talk directly to the members.
WTA-Days 2024
We were represented with a total of four lectures at the WTA Days 2024, 14-16 March 2024 in Brno, Czech Republic.
Prof Weichold presented a lecture entitled ‘Alkaline hydrogels as multifunctional repair materials’. From the field of bio-based construction materials, Fabian Weitenhagen gave a presentation on ‘Renewable Polyester Resin Systems for Sustainable Construction Materials’, Paul Marten gave a presentation on ‘Chitosan as a Key Component in the Production of Sustainable Acrylic Glass-Wood Laminates’ and Nils Münstermann gave a presentation on ‘Chitosan as an Eco-Friendly Binder for High-Strength Fibreboards in Sustainable Construction’.
IPC2023
At the 13th Society of Polymer Science Japan (SPSJ) International Polymer Conferences (IPC2023), 18-21 July 2023 in Sapporo, Japan, we were represented with two presentations:
Prof Weichold
Firefighting with feathers
Fabian Weitenhagen
Development of bio-based thermosetting polyester resins
New project:Recycled foams
A project for the development of mechanically stable foams was approved retroactively to 1 November. The project builds on the materials described in Appl. Sci. 2020 described materials. In addition, the effect of fillers made from recycled materials will be tested. The project is supervised by Fabian Weitenhagen.
New PhD Student
Fabian Weitenhagen joined our team in the field of bio-based building materials in December. He is continuing his research into bio-based polycondensation resins and is building on the results of previous work. He is also developing innovative bio-based composites to promote sustainable solutions for the construction industry.
New publication:
Duroplasts with a difference
Nature avoids highly reactive functional groups, such as isocyanate and epoxy, by using highly specialised enzymes as catalysts in condensation reactions. Consequently, bio-based raw materials require in vitro reaction conditions that are often difficult to reconcile with the requirements for thermoset resins. In addition, condensation reactions release small molecules (often water), which leads to the formation of foams under standard reaction conditions. It would therefore appear that natural building blocks would not be suitable for the production of thermosetting resins.
We show here that the addition of chopped feathers prevents the previously reported foaming of highly cross-linked combinations such as citric acid/glycerol, increases conversion and improves flame retardant properties.
M. Brenner, C. Popescu, O. Weichold
Anti-Frothing E ffect of Poultry Feathers in Bio-Based, Polycondensation-Type Thermoset Composites
Appl. Sci. 2020, 10, 2150; https://doi:10.3390/app10062150
