Cellulose-Based Fillers for Sustainable Rubber

Date:19 Oct 2022

Country: Switzerland

Application

• Enhancing sustainability in rubber products by replacing petrochemical-based fillers with cellulose-derived materials.
• Improving the mechanical properties of rubber compounds, particularly in applications like pump diaphragms.

Description

This project, a collaboration between Empa and Daetwyler Schweiz AG, focuses on developing surface-modified microfibrillated cellulose (MFC) to improve the sustainability of rubber products. By replacing petrochemical aramid fibers with MFC, the process enhances the compatibility and mechanical properties of rubber compounds. This innovation could lead to more eco-friendly rubber products like pump diaphragms. The project moved from research to industrial implementation in just two years, supported by Innosuisse.

Pathway Description:

The process used in this project involves the surface modification of microfibrillated cellulose (MFC) to make it compatible with hydrophobic rubber compounds. The MFC is treated to improve its interaction with the rubber matrix, allowing it to act as an effective filler. The modified MFC provides strong reinforcing effects in rubber products, outperforming traditional petroleum-based fillers like aramid fibers. This innovation enables the use of renewable cellulose-based materials in rubber products, increasing their sustainability.