Thermoplastic Infill
The vast majority of infill used in artificial turf (98%) is made from granulated rubber sourced from recycled car and truck tyres. These particulates are not ideal with suspected high levels of toxic chemicals that leach out of them into the soil and the air.
As an alternative to these granules is a new product called thermoplastic infill and it is an environmentally friendly option made from natural materials. It is also known as styrene-butadiene rubber (SBR) and is a stability and shock absorbent solution that has been developed for synthetic turf.
Positive features of synthetic grass using thermoplastic infill include reliable footing, good abrasiveness, a reasonable level of elasticity which is comparable to natural grass, it’s non-toxic and doesn’t smell of rubber. The downside is that synthetic grass made using thermoplastic infill can cost up to 14 times more than the artificial turf laid with recycled rubber.
As with many products that are still new on the market, there are still some unknowns about the product, such as how it is going to perform years down the track. The pricing issue should solve itself as the manufacture of the product is refined and cheapened, hopefully making this a much more affordable option.