Technology

  2010 MAR 9 - (VerticalNews.com) -- According to recent research from Athens, Greece, "A series of hybrid polyurethane-POSS materials have been synthesized on the basis of poly(tetramethylene glycol) (Terathane 1400 ®) as soft component, 4,4'-methylenebis(phenylisocyanate) (MDI) as hard component, and 1,4-butanediol as chain extender. POSS particles properly modified have been tethered on the main chain by substitution of the chain extender to weight fractions up to 10%. ...read more

  2010 MAR 9 - (VerticalNews.com) -- According to recent research from London, the United Kingdom, "It has previously been shown possible to use highly oriented polypropylene ( PP) tapes to create self-reinforced (all-PP) composites. It is desirable to understand the relationship between tape processing parameters and the mechanical properties and thermal stability of the tapes, as these tape properties will govern the ultimate properties of the all-PP composite. ...read more

  2010 MAR 9 - (VerticalNews.com) -- "The as-formed structure of gel-spun polyacrylonitrile (PAN) fiber from the solvent mixture system has been probed exploiting AFM techniques developed in the membrane industry," scientists writing in the journal E - Polymers report.

  "The surface structure of PAN membranes, prepared by phase transition under different casting conditions, was investigated by tapping mode atomic force microscopy. The results obtained show that the size and the density of these aggregates are dependent on the casting solution, namely on the type and concentration of the non-solvent," wrote C.X. Ma and colleagues, Donghua University ...read more