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Glitter impairs growth of organisms with key roles in aquatic ecosystems, study shows

A study by researchers at the University of São Paulo found that glitter can hinder the growth of cyanobacteria, a key component of aquatic ecosystems. The toxic effects of glitter on microorganisms have not been well-studied, but the findings suggest that even low concentrations can negatively impact susceptible organisms.

Self-healing plastic becomes biodegradable

Researchers at the University of Konstanz have developed a biodegradable mineral plastic with self-healing properties, replacing polyacrylic acid with sustainable polyglutamic acid. The new material retains its positive properties and has been shown to degrade in just 32 days using microorganisms from forest soils.

SourceUniversity of Konstanz·JournalSmall Methods·DateJul 27, 2023

Can using biodegradable fishing gear help reduce the cost of ghost fishing?

Researchers from the University of Portsmouth found that biodegradable fishing gear (BFG) does not significantly reduce the cost of ghost fishing due to decreased fishing efficiency. The study suggests that implementing BFG could still have economic benefits, but only if it can achieve similar fishing efficiency as traditional gear.

SourceUniversity of Portsmouth·JournalMarine Pollution Bulletin·TypeData/statistical analysis·DateJul 11, 2023

Researchers create edible, transparent composite packaging with biocellulose

Scientists at The Chinese University of Hong Kong have developed an edible, transparent, and biodegradable material for food packaging using bacterial cellulose. The material has high tensile strength, versatility, and can be produced through microbial fermentation, making it a sustainable alternative to traditional plastics.

SourceSociety of Chemical Industry·JournalJournal of the Science of Food and Agriculture·TypeExperimental study·DateJun 29, 2023

A popular compostable plastic doesn’t break down in the ocean

A new study finds that popular compostable plastics like PLA don't biodegrade in marine environments, instead persisting unchanged. The research highlights the need for standardizing tests to see if materials promoted as compostable or biodegradable actually break down in natural environments.

SourcePLOS·JournalPLOS ONE·TypeExperimental study·DateMay 24, 2023

Scientists discover microbes in the Alps and Arctic that can digest plastic at low temperatures

Researchers have identified microorganisms in the Alpine and Arctic regions capable of degrading biodegradable plastics at 15°C, including polyethylene, polyester-polyurethane, and polybutylene adipate terephthalate. The discovery could reduce costs and environmental burden associated with enzymatic recycling processes.

SourceFrontiers·JournalFrontiers in Microbiology·TypeExperimental study·DateMay 10, 2023

A 21st-century remedy for missed meds

Researchers at Rice University have created a new technology called PULSED that can deliver time-released drugs and vaccines for extended periods. The technology uses high-resolution 3D printing and soft lithography to produce microcylinders made of biodegradable polymers, which can be loaded with drugs and release them over time.

SourceRice University·JournalAdvanced Materials·TypeExperimental study·DateApr 3, 2023

Harnessing nature to promote planetary sustainability

The latest issue of PLOS Biology features a special collection on biology-based solutions to reduce plastic pollution, carbon dioxide emissions, and produce food or energy more sustainably. Insect enzymes may degrade plastic waste, while photosynthetic algae can capture CO2 produced by industrial applications.

SourcePLOS·JournalPLOS Biology·TypeCommentary/editorial·DateMar 31, 2023

Gwangju Institute of Science and Technology researchers develop a novel thermoelectric generator inspired from zebra skin

Researchers at GIST developed a novel thermoelectric generator inspired by zebra skin, creating a high in-plane temperature gradient for generating electricity. The design uses a pattern resembling black-and-white zebra stripes to increase its applicability while reducing environmental impact.

SourceGIST (Gwangju Institute of Science and Technology)·JournalScience Advances·TypeExperimental study·DateMar 9, 2023

Shellac-based coating makes pulp materials suitable for food without use of petroleum based polymers or metals

Researchers have developed a shellac-based coating to improve the gas barrier properties of moulded pulp materials, making them suitable for food packaging. The coating, combined with nanofibrillated cellulose, provides superior water resistance and thermal stability, while preserving environmental sustainability.

SourceSociety of Chemical Industry·JournalPolymer International·TypeExperimental study·DateFeb 7, 2023

Strong, recyclable plastic

Researchers have created a strong and recyclable biodegradable polyester that breaks down fully to its starting materials using mild chemical or biological processes. The new material has similar crystallinity to high-density polyethylene and retains beneficial mechanical properties.

SourceWiley·JournalAngewandte Chemie International Edition·TypeExperimental study·DateJan 13, 2023

Strong and biodegradable

Scientists have created a new polyester material that combines mechanical stability with high biodegradability, making it an attractive alternative to traditional plastics. The innovative material, called polyester-2,18, was shown to degrade in lab experiments and pass industrial composting standards.

SourceUniversity of Konstanz·JournalAngewandte Chemie·DateDec 20, 2022

Wearable electronics from starch to prevent e-waste

Researchers developed a biodegradable material that decomposes in weeks to months, replacing toxic metal components of electronic devices. The starch-based polymer uses natural enzymes and has the right properties for sensors, offering an alternative to complex polymers and reducing e-waste.

SourceUniversity of Groningen·JournalACS Applied Materials & Interfaces·TypeExperimental study·DateDec 15, 2022

The research group led by Prof. Seung Hwan Ko, in Dept. of Mechanical Engineering in Seoul National University, developed the paper-based biodegradable and eco-friendly sensor for sensing the food status.

Researchers at Seoul National University have developed a biodegradable and eco-friendly sensor that can detect food temperature and freshness. The sensor, made from laser-induced graphene on commercial paper, enables real-time monitoring of food spoilage and can be used in various industrial fields.

SourceSeoul National University·JournalApplied Materials Today·DateOct 21, 2022

Throwing tomatoes at bacteria

Researchers at ITQB NOVA extract bactericidal mixtures from tomato peels using a fast, simple, and sustainable process. The extracts show effectiveness against pathogenic bacteria, including Staphylococcus aureus and Escherichia coli. This breakthrough has the potential to provide antimicrobial properties to biomaterials.

Accurately tracking how plastic biodegrades

Researchers at ETH Zurich develop a new method to track plastic biodegradation in soil, using stable carbon isotopes to demonstrate complete mass balances. The study finds that about two-thirds of the added polymer carbon is converted into CO2, while one-third remains in the soil, with some being incorporated into microbial biomass.

SourceETH Zurich·JournalNature Communications·TypeExperimental study·DateOct 13, 2022

A sea change for plastic pollution: New material biodegrades in ocean water

Scientists at the University of California San Diego have developed a new biodegradable polyurethane material that can break down in seawater, reducing plastic pollution. The material was tested in marine environments and found to be degraded by microorganisms, which consume the chemicals as nutrients.

SourceUniversity of California - San Diego·JournalScience of The Total Environment·TypeExperimental study·DateSep 22, 2022

Sensing pressure using paper

Researchers have developed a novel pressure sensor using paper as the medium, achieving high sensitivity and detecting a broad range of pressures. The sensor's structure and multilayering enable conductive properties, making it suitable for flexible and wearable electronic devices in healthcare and other industries.

SourceIndian Institute of Science (IISc)·JournalACS Sustainable Chemistry & Engineering·DateSep 20, 2022

More than meets the eye: How patterns in nature arise and inspire everything from scientific theory to biodegradable materials

A University of Arizona-led study uses bacteria to understand how natural patterns form through mechanical interactions. The findings suggest that just four different adhesive molecules are sufficient to create any possible tiling pattern, with implications for understanding complex multicellular life and creating biodegradable materials.

SourceUniversity of Arizona·JournalNature·TypeExperimental study·DateAug 10, 2022

Scientists make plastic more degradable under UV light

Researchers at the University of Bath developed a way to make PLA plastics more degradable in natural environments by incorporating sugar molecules. This technology can degrade 40% of the plastic within six hours of exposure to UV light, making it compatible with existing manufacturing processes.

SourceUniversity of Bath·JournalChemical Communications·TypeExperimental study·DateMay 24, 2022

Paper or plastic?

Researchers at the University of Tokyo have developed a waterproof coating called Choetsu that adds strength to paper, making it a viable alternative to plastic. The coating, made from safe and low-cost chemicals, also has photocatalytic activity, protecting against dirt and bacteria.

SourceUniversity of Tokyo·JournalIndustrial & Engineering Chemistry Research·TypeExperimental study·DateMay 13, 2022