news Teijin boosts nanofibre conductivity
Teijin and the Tokyo institute of Technology have jointly developed an extra-conductive carbon nanofibre (cnF) with a novel structure. The fibre has an elliptical cross-section consisting of graphite layers in a single direction. The new cnF has diam-
eters ranging from 50 to 300 nm and a length of 20 microns. This is 10 times longer than a conventional cnF, and its elec- trical conductivity is 30-40% higher. The enhanced electri- cal properties are the result of the extra fibre length and the well-developed graphite layers which are ordered in a single direction throughout the cross- section of the fibre. conven-
tional cnF has a cross-section made up of numerous concentric graphite layers.
Another notable feature of
the new cnF is the presence of large numbers of loop-shaped
graphene layers protruding from the fibre surface. These help to promote chemical reactivity, increase adhesion with resins, and boost dispersion in liquids. Teijin says that the new
extra-conductive cnF is produced using a melt- spinning process, allowing it to be manufactured using existing facilities without significant new investment. in addition, high purity materials can be produced as no catalyst is used in the process. Target applications include
The new CNF has an elliptical cross-section with graphite layers in a single direction
Ticona lFTs add style to seating
Brazilian designer guto indio da costa’s ic01 chair relies on celstran long-fibre-reinforced polypropylene from Ticona to achieve its contemporary look and structural integrity. The chair is injection moulded using a single mould by Brazilian
furniture and logistics systems maker pnaples, and is produced in a range of colours.
one of the factors behind the selection of the celstran pp lFrT was its ability to achieve a good surface finish direct from the mould, according to Ticona’s Brazilian develop- ment and marketing manager Simone orosco. “celstran pp lFrT
offers high stiffness, strength, toughness and low warpage while providing wide design latitude,” explained orosco.
❙
www.ticona.com ❙
www.pnaples.com.br
10 compounding world | december 2011 Jan Siebert
conductive additives and reinforcements in plastics, plus various battery components. ❙
www.teijin.co.jp
People on the move
Jan Siebert will become the cEo of KraussMaffei, which includes the Berstorff extruder division, on 1 January 2012. He will succeed Dr Dietmar Straub who is leaving the company at his own request. Siebert is currently president and cEo of gEA Heat Exchangers.
Matthew Defosse has joined PolyOne as marketing communications manager covering Europe, india and
Matthew Defosse
the middle East. He was previously chief editor of modern plastics worldwide magazine and content leader for
plasticsToday.com.
Tronox has announced that its chairman of the board, Tom Casey, has assumed the additional role of cEo. He succeeds Dennis Wanlass who stepped down from this position as well as from the Tronox board of directors.
www.compoundingworld.com
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