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Interview: Nanomaterials as the key to sustainable coating solutions
Nanomaterials are not a passing fad, but offer concrete approaches for more environmentally friendly coating systems. Dr. Juliana Sousa from the International Iberian Nanotechnology Laboratory explains why their introduction, while complex, clearly outweighs the challenges in the long term.
Nanomaterials and their functions: fully established in the industry, trend or hype?
Juliana Sousa: Nanomaterials are not just a passing trend or technological hype — they are, in fact, concrete solutions to many of the challenges we face today. Various industries are finally beginning to recognize the fundamental role that nanomaterials can play and the real impact they can have on our daily lives.
We are entering a new era in which society is becoming aware of the importance of reflecting on its decisions and the consequences they may bring. A clear example is the widespread use of fluorinated compounds, historically applied in several areas — from stain-resistant fabrics to anti-corrosion metal coatings. Today, we are dealing with the environmental consequences caused by these compounds and are seeking more sustainable alternatives.
In this context, nanomaterials with environmentally friendly morphologies and chemical compositions are emerging as promising solutions. Although their adoption may pose initial challenges, the long-term benefits clearly outweigh those of conventional and short-term approaches. Therefore, nanomaterials should not be seen as just a trend or technological fad, but rather as a sustainable, strategic and essential approach to solving the problems of our everyday lives.
How much sustainability or bio-based raw materials are possible or already being implemented in a field of functional coatings?
Sousa: Currently, various efforts are being made to make processes in the field of coatings more sustainable and environmentally responsible. However, this is a complex challenge. It requires reformulating existing compositions by replacing conventional solvents with more eco-friendly alternatives and adopting polymers of sustainable origin.
This transition, however, must be carefully planned. It cannot be carried out hastily, as there is a risk that the developed coatings will not meet the required technical standards. This would lead to their premature replacement, resulting in even more waste and environmental impact — precisely what we aim to avoid.
Although progress toward sustainability is underway, it is essential that this shift be carried out with responsibility, awareness, and a solid scientific foundation. Rather than simply following trends or responding to immediate social pressures, we must develop solutions that ensure true environmental respect, both in the short and long term.
