bioplastics | Innovation
Right: Xindao and XD design selected
PolyOne’s reSound
bioplastics for production of this solar
charger, cutting
CO2 emissions by 35%
glass reinforced (30%) compound with a UL 94 V-0 rating at 0.75 mm. Impact modified versions and grades with carbon fibre reinforcement are available for sampling. Evonik is another supplier of bio-polyamides, which
it markets as Vestamid Terra. Grades are based on poly- amide 6,10 (62% based on renewables), polyamide 10,10 (100% renewable) and polyamide 10,12 (45-100% renewable). All are at least partly derived from castor oil. Benjamin Brehmer, Evoniks’s business manager for biopolymers says: “All of our polymers are primarily utilised in the marketplace due to their superior technical performance. With respect to Vestamid Terra, sustainability is not only one additional aspect but an integral part of the entire performance profile. We are noticing that there are more and more customers who are willing to pay a moderate premium to fulfill their sustainability targets.” Brehmer says the bio content of the company’s base
polymers ranges from 45% to 100% and the final formu- lated compound must contain at least 20% renewable content to carry the ‘Terra’ branding. He says the company has launched a natural reinforced fibre compound to uphold the high bio content without compromising on mechanical strength. RadiciGroup Plastics is also offering grades based
on polyamide 6,10 in its Radilon D series. The company says that, compared to PA6 and PA6,6 polymers (which the company also makes), Radilon D polyamides show reduced moisture uptake, less loss of tensile strength and tensile modulus under wet conditions, better chem- ical resistance to zinc chloride and calcium chloride, and improved glycol resistance. This property set is said to make them ideal for automotive applications.
At K2013, Solvay Specialty Polymers unveiled a
portfolio of bio-based high-performance polyamides aimed at smart phone, tablet, laptop, and other mobile electronic device applications. These include Kalix HPPA 3000 amorphous polyphthalamides (PPAs) – the first such PPAs –and Kalix 2000 tough semi-crystalline polyamides. Solvay says Kalix 3000 series grades show low warpage, reduced shrinkage, and little to no flash in injection moulding applications. They have 16% renewable content. Kalix 2000 grades, based on PA 6,10, provide good mechanical properties, high impact,
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