8. Jan 2021 | Production & Lab
Green nanocomposites from Salvia-based water-borne polyurethane-urea dispersions
Waterborne polyurethane-urea (WBPUU) dispersions, products having none or low contents of organic solvents, depending on the used synthesis process, can provide suitable environmentally-friendly strategies to prepare novel materials. Moreover, waterborne systems enable the incorporation of aqueous dispersible nanoentities and soluble additives, which provides a strategy to design versatile functional materials with tailored properties.
Having demonstrated in previous work the bacteriostatic properties of a 3 wt% Salvia-based WBPUU against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, a new work is focused in the preparation of Salvia-based WBPUU added with cellulose nanocrystals (CNC) tackling the preparation of functional green nanocomposite films with increased mechanical properties.
Enhanced mechanical stiffness
Through this strategy, nanocomposites loaded with 1, 3 and 5 wt% of CNC were prepared, showing an effective CNC incorporation avoiding agglomerates. CNC addition is able to modulate soft and hard phase’s segregation, inducing enhanced mechanical stiffness, together with improved deformability, while retarding thermomechanical instability to higher temperatures.
The study has been published in Progress in Organic Coatings, Volume 150, January 2021.
Understanding Coatings Raw Materials
What are paints and coatings composed of? This efficient reference book offers an optimum overview of the different constituents of the different types of coatings, explaining the chemistry, system and impacts of coating raw materials. That way, newcomers to the field of coatings gain a quick basic knowledge whereas chemists and laboratory assistants will find valuable insights on future trends and developments in the field of raw materials.
You are currently not logged in
To leave a comment, please log in.
There was an error while sending your comment. Please try again.
Your comment was too long. There are a maximum of 2048 symbols allowed!