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'Superhydrophobic nonwovens, from naturally occurring polymers' - MV - Aug 14, 2014 www.materialsviews.com/superhydrophobic-nonwovens-naturally-… http://onlinelibrary.wiley.com/doi/10.1002/adfm.201401423/ab… "Superhydrophobicity can be found in nature, as can be seen in the way water droplets roll off a lotus leaf, or adhere strongly to a rose petal. Such unique wetting properties have been artificially reproduced by using synthetic materials with a rough surface. However, although there is no doubt that leaves and flowers are mainly composed of biopolymers, there has been little research done on superhydrophobic materials made of natural-occurring materials. Now, a Japanese/German collaboration has succeeded in synthesising a biodegradable, hydrophobic polymer by modifying a naturally-occurring poly(amino acid) with a hydrophobic amino acid. the modified polymer is then subjected to electrospinning, a versatile technique for producing nanofibers from various polymer solutions, which creates a nonwoven material with a rough surface. These resultant nonwovens show a water contact angle of more than 150o - they are superhydrophobic. This new class of biodegradable, superhydrophobic materials opens up new possibilites in the fields of environmental chemistry and biomedical engineering – they will become a new functional material resource which meets at least some of the criteria for green chemistry. " |
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| aus der Diskussion: | News around the world |
| Autor (Datum des Eintrages): | Popeye82 (14.08.14 14:20:41) |
| Beitrag: | 29,565 von 38,484 (ID:47515564) |
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