Biobased plastics: versatile and circular

Recent Wageningen research showed that only 27% of all plastic packaging could be properly recycled. Moreover, residues in nature are barely broken down in nature. Northern fulmars, for example, have an average of twenty pieces of plastic in their stomachs. In terms of human size, that would equal approximately 30 grammes of plastic. The production of plastic is also connected to concerns over the climate and pollution and social and geopolitical problems resulting from oil mining. Therefore, WUR scientists contribute to research on developing alternative plastics based on waste streams from the potato fries industry or lactic acid from cassava and sugar beets.

Biobased Products Innovation Plant

Because they are made from plant-based feedstock, biobased plastics are circular from the onset. Particularly if they are made from waste streams. WUR also investigates different applications, such as the use of lattices made from starch, on which oysters may attach, to start a new ecosystem in the sea. The thus attached oysters form a structure that protects against erosion. The temporary lattice eventually disintegrates while the oysters create strong connections.

WUR works with companies such as Rodenburg Biopolymers. This family business has invested in plastics made from waste streams for over two decades. Together, they developed various biobased materials made from so-called grey starch. In WUR’s Biobased Products Innovation Plant, recipes were developed, which led to prototypes that were subsequently tested for their technical properties. Consider, for example, properties relevant to processing such as melting temperature or to the final product, such as strength or sensitivity to water or degradability in soil.

Products in shops

Another business that supports WUR in its development of more sustainable plastics is Paperfoam in Barneveld. As a result, Paperfoam now produces packaging such as egg cartons and luxury packaging for mobile phones from starch, natural fibres, water and a “magic mix”. This product is biodegradable, and the production process emits up to 90% less CO2 than comparable propylene packaging. Moreover, it is 40% lighter than the traditional materials, with the same protective properties.

The plant-based materials that WUR developed means that edible materials could be made in the same way. This led to a collaboration between WUR and Paragon Products. Together with this business, WUR developed a unique product in its Biobased Product Innovation Plant: plant-based dog treats made from grain that can be produced in various shapes such as a toothbrush or hedgehog, just like plastic. These shapes are attractive for pet owners and beneficial for the dog’s teeth. These snacks are mass-produced in a large factory plant in Veendam under the commercial name Whimzees. The American company WellPet, a significant player in the international pet food market, took over this successful business in 2017.

WUR is at the forefront of innovation in developing biobased plastics that are versatile and planet-friendly.