Lithium diffusion in polyether ether ketone and polyimide stimulated by in situ electron irradiation and studied by the neutron depth profiling method

0435778 - ÚJF 2015 RIV GB eng J - Článek v odborném periodiku
Vacík, Jiří - Hnatowicz, Vladimír - Attar, F. M. D. - Mathakari, N. L. - Dahiwale, S. S. - Dhole, S. D. - Bhoraskar, V. N.
Lithium diffusion in polyether ether ketone and polyimide stimulated by in situ electron irradiation and studied by the neutron depth profiling method.
Radiation Effects and Defects in Solids. Roč. 169, č. 10 (2014), s. 885-891. ISSN 1042-0150. E-ISSN 1029-4953
Grant CEP: GA ČR(CZ) GBP108/12/G108; GA MŠMT(XE) LM2011019
Institucionální podpora: RVO:61389005
Klíčová slova: diffusion * lithium * neutron depth profiling * polymers
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 0.513, rok: 2014

Diffusion of lithium from a LiCl aqueous solution into polyether ether ketone (PEEK) and polyimide (PI) assisted by in situ irradiation with 6.5 MeV electrons was studied by the neutron depth profiling method. The number of the Li atoms was found to be roughly proportional to the diffusion time. Regardless of the diffusion time, the measured depth profiles in PEEK exhibit a nearly exponential form, indicating achievement of a steady-state phase of a diffusion-reaction process specified in the text. The form of the profiles in PI is more complex and it depends strongly on the diffusion time. For the longer diffusion time, the profile consists of near-surface bell-shaped part due to Fickian-like diffusion and deeper exponential part.
Trvalý link: http://hdl.handle.net/11104/0239655