A native Australian grass could hold the key to creating super-thin condoms as sheer as human hair.
University of Queensland scientists have discovered the hardy spinifex plant can be harvested for a particular type of nanocellulose, a key ingredient in latex production.
They found fibres from the plant can be used to improve the durability and physical performance of the rubber.
"It's a flexible nano-additive, so we can make a stronger and thinner membrane that is supple and flexible, which is the holy grail for natural rubber," UQ Professor Darren Martin said.
Initial tests show the spinifex-infused condoms can handle an increase of 20 per cent in pressure and 40 per cent in volume compared to regular types.
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The discovery is expected to attract interest from a multi-billion-dollar global market.
It could also be applied to other latex products, including gloves.
"With a little more refinement, we think we can engineer a latex condom that's about 30 per cent thinner, and will still pass all standards," Dr Martin said.
Scientists are working with the Indjalandji-Dhidhanu people, traditional indigenous owners of the outback Camooweal region in northwest Queensland where spinifex thrives.
There are hopes of fostering industry should the research turn commercial.
Nanocellulose is harvested from spinifex by pulping the plant, combining it with a chemical and separating the fibres under high pressure.
"Research like this has great potential to make a difference in the fight against HIV and AIDS and other global issues in health care", UQ President Professor Peter Hoj said.
