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Extremely strong degradable polymers

Swift heavy ion beams with extremely high LETs are used to degrade strongly polymer chains within tracks over a range of a few tens of micrometers. After irradiation, the top surface of bulk thermoplastics such as polyethyleneterephtalate, polycarbonate, polyvinylidene fluoride or polyimide materials as well as thin films made of the same material are subsequently etched by a wet chemical treatment that reveals pores of which the shape, surface density and dimensions can be controlled by choosing appropriate conditions. High aspect ratio cylindrical or conical traces of diameter ranging from a few nanometers to some... [Pg.135]

Alkali-doped polyacetylene is extremely air-sensitive and deteriorates much more quickly than oxidatively doped polyacetylene. But, whereas the latter degrades rapidly upon heating as a result of polymer-dopant reactions that alter the chain, alkali-doped polyacetylene is surprisingly stable thermally, up to 200°C. This can be exploited to anneal cis-rich doped samples, which leads to a considerable decrease of disorder and evolution towards the trans lattice [88]. Especially in K-doped samples, this leads to a strong conductivity increase. [Pg.14]

Iwamoto S, Kai W, Isogai A, Iwata T (2009) Elastic modulus of single cellulose microfibrils from tunicate measured by atomic force microscopy. Biomacromolecules 10 2571-2576 Jalal Uddin A, AraM J, Gotoh Y (2011) Toward strong green nanocomposites polyvinyl aleohol reinforced with extremely oriented cellulose whiskers. Biomacromolecules 12(3) 617-624 Jonas R, Farah LF (1998) Production and application of microbial cellulose. Polym Degrad Stab 59 101-106... [Pg.290]

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Degradable polymers

Degradeable polymers

Extreme

Extremities

Extremizer

Polymer degradation

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