Low addition, high compatibility, and maintained biodegradability help the industry achieve a win-win situation for environmental protection and economic benefits.
Against the backdrop of over 400 million tons of plastic waste generated globally each year, bioplastics, as an environmentally friendly alternative, are experiencing significant growth, but have long been limited by two major challenges: high density and high cost.
Recent research by the Nanomaterials and Advanced Materials Research Institute (NAMI) team shows that their developed microporous foamed particles can be applied to bioplastic systems, maintaining material degradation performance while achieving weight reduction and lower raw material costs, thus providing a practical solution for lightweight sustainable packaging.
This technology has won the 2023 R&D 100 Awards and a gold medal at the 2023 Geneva International Invention Exhibition, gaining international market recognition.
The core advantage of microporous foamed particles lies in their unique structural design. Traditional foaming processes often lead to a sharp decline in material mechanical properties due to uneven cell distribution. The inherent low melt strength and poor foaming performance of bioplastics further increase the difficulty of lightweight design. The microporous foaming particles developed by the NAMI team introduce a large number of uniformly distributed closed micropores within the material. Through precise cell control technology, this material significantly reduces density while maximizing the retention of its mechanical properties to meet practical application requirements. Furthermore, this technology possesses significant industrialization potential:
• Effective foaming can be achieved by adding only 2–3 wt% microporous foaming masterbatch.
• It enables material lightweighting, reducing product weight and raw material costs.
• It is fully compatible with existing processing equipment, requiring no additional modifications and lowering the production threshold.
While promoting lightweighting, maintaining the degradation performance of bioplastics is crucial. Low amounts of microporous foaming particles form a high-density microporous structure after foaming, significantly increasing the material's specific surface area, thereby promoting microbial attachment and decomposition. Since this technology primarily alters the material structure physically, without involving the breaking or formation of chemical bonds, it has minimal impact on the degradation behavior of bioplastics.
With the continued increase in market demand for environmentally friendly materials, bioplastics have broad application prospects. NAMI's microporous foamed particle technology provides a reliable path to lightweighting and cost control in bioplastics, potentially significantly reducing product manufacturing and logistics costs and improving corporate economic efficiency. This technology not only helps achieve environmental goals while maintaining product performance but also promotes sustainable development in multiple fields such as packaging, healthcare, and agriculture, helping these industries move towards a green manufacturing future.
