Subscribe now

Chemistry

Plastic wrap made from seaweed withstands heat and is compostable

A thin material made from seaweed can handle high temperatures but only takes a few weeks to break down in a composting bin

By Karmela Padavic-Callaghan

1 April 2023

Common sargasso weed

The species of seaweed used to make the film

Alamy/Nature Picture Library

A cling film made from an invasive seaweed can withstand high temperatures yet is still easily compostable. The material could eventually become a sustainable choice for food packaging.

Large quantities of thin plastic films, like those for wrapping produce or baked goods, are used every year. Most end up as garbage, either because they require specialised recycling facilities or can’t be recycled at all. Some biodegradable plastics do exist, but they can take months or even years to decompose. Keeran Ward

To continue reading, subscribe today with our introductory offers

View introductory offers

No commitment, cancel anytime*

Offer ends 14th June 2023.

*Cancel anytime within 14 days of payment to receive a refund on unserved issues.

Inclusive of applicable taxes (VAT)

or

Existing subscribers

Sign in to your account