natural fibres and fillers | Innovation
Bylox can be used in numerous polymer systems. He claims it is one of the most adaptable, sustainable and cost effective bio-based fillers in the market today. “Unlike many cellulose-based additives, Bylox
Above: Fibres and pellets produced using recycled textile fibres at Aimplas
pellets were obtained and could be used in a conven- tional one-step compounding process.” Addition rates of the fibres were between 15 and 30%
by weight in different polyolefins. Denim-fibre com- pounds were processed by injection moulding and extrusion into products suitable for applications such as decking, household goods and furniture, where conventional WPCs (wood fibre reinforced plastics) are already used. “These recycled denim-fibre products showed good processability and mechanical perfor- mance, similar to equivalent WPC products with the same fibre loading,” says Gutierrez. “Besides denim, many other type of natural post-
industrial fibre scrap can be use in a similar way, always taking into account a suitable treatment before compounding process to make the fibre easy to dose, and the use of necessary additives to improve process- ability of the compounds.” Alpharetta, GA-based Genarex taps into the
components of industrial corn waste streams as raw materials for its Bylox biofiller. Sales and Product Development Vice President Bob Montgomery says
particles are non-fibrous, with round particles providing isotropic properties,” Montgomery says. “Bylox can be deployed as either a standalone product or as part of a filler system which can be used to cost dilute more expensive polymer systems including PBS, PBAT, PLA and may other bio-based resins.” Typical Bylox addition rates are between 10 and 20%. Montgomery says that Genarex can provide the raw material only or as masterbatches and compounds to provide “a fully customised solution to meet the needs of the application.” Genarex supplies Bylox LT and HT types. The first is
stable up to 190°C, and the second up to 275°C. Bylox LT particles are naturally 10 micron in diameter, while Bylox HT particles are milled to a custom size, normally averaging 20 microns. Bylox HT is said to be particularly good for injection moulding compounds, where it is claimed to improve impact resistance and ductility in PP without significantly removing stiffness and to often allow polymers to flow and fill at temperatures as much as 20°C lower than normal. Bylox has been evaluated in numerous applications
(none yet fully commercial), predominantly as a biofiller to bring cost savings combined with performance parity. “Whether the application employs lower or higher temperature conversion processes, Bylox is more than capable of withstanding operating conditions previously thought to be impossible for bio-based fillers,” Mont- gomery says.
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