An advance developed by the **Polytechnic University of Milan** promises to transform the packaging industry with a sustainable and biodegradable alternative. A group of researchers from the Polytechnic University of Milan, along with Finnish institutions, created **hydrophobic paper** capable of competing with plastic in terms of [resistance and durability](https://noticiasambientales.com/ciencia/inventan-un-material-mas-fino-que-el-papel-pero-mas-resistente-que-el-acero/), while maintaining its biodegradability.
This development, led by the “Giulio Natta” Department of Chemistry, Materials, and Chemical Engineering, is characterized by the use of **cellulose nanofibers (CNF)** combined with small amounts of peptide sequences to enhance the material’s properties.
For this, the researchers decided to take a **supramolecular approach**, which involves incorporating minimal amounts of peptides —less than 0.1%— that adhere to the cellulose nanofibers, significantly strengthening the paper without altering its chemical composition. According to Dr. Elisa Marelli, co-author of the study, **this method enhances both the mechanical strength and hydrophobicity of the paper**, preserving its sustainable nature.
However, the most innovative aspect of the development **is the incorporation of fluorine atoms in the peptide sequences**, which creates a hydrophobic film on the material. This coating not only gives it high water resistance but also ensures that the paper is biocompatible, expanding its potential use in sectors such as sustainable packaging and biomedical devices.
## **Toward a Sustainable Future**
Professor Pierangelo Metrangolo, co-author of the project promising to transform the packaging industry, emphasizes the importance of the discovery. For this reason, he highlights that **these advances will allow the creation of biomaterials**, which could be [a good alternative](https://noticiasambientales.com/energia/el-ingenioso-invento-que-consigue-baterias-mas-baratas-y-duraderas-utilizando-papel-reciclado/) to petroleum derivatives, as they are ideal for applications where resistance to humidity is essential.
In this sense, this innovative paper could play **a crucial role in reducing the use of plastics** in key sectors, offering a more environmentally friendly solution. Furthermore, its versatility suggests a significant impact not only on the packaging industry but also in other fields where **biocompatibility and resistance are fundamental**. The discovery marks an important step towards the global transition to more sustainable materials.
## **Ecological Ways to Replace Plastic**
There are several ecological ways to replace plastic, such as using the following biodegradable, recyclable, or reusable materials:
– **Cardboard and paper:** Biodegradable and recyclable materials, but less resistant to water and humidity than plastic.
– **Bamboo:** A renewable and biodegradable material that can be used to make kitchen utensils, cups, straws, and household items.
– **Palm leaf:** Compostable and biodegradable products can be created from fallen palm leaves, such as palm leaf plates.
– **Coconut wood:** A durable material made from coconut shells.
– **Natural textiles:** Organic cotton and linen can replace synthetic fibers.
– **Wheat fiber:** An ecological alternative to plastic containers.
– **Fabric bags:** An alternative to plastic bags, which contaminate the planet and end up in landfills and oceans.
– **Reusable silicone bags:** An alternative to plastic bags with airtight seals.
– **Steel:** A material that can compete with plastic in many areas.
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