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Aggregative Characteristics of Nanocarbon and of a Stabilizing Surfactant in the Aqueous‐Polymer Matrix versus Optical Power Limiting Performance
Author(s) -
Vlasov Andrey Yu.,
Venediktova Anastasia V.,
Ivanov Pavel V.,
Nikolaeva Alexandra L.,
Anufrikov Yuri A.,
Venediktov Vladimir Yu.
Publication year - 2019
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201900320
Subject(s) - materials science , dopant , polyvinyl alcohol , polymer , chemical engineering , pulmonary surfactant , stabilizer (aeronautics) , irradiation , aqueous solution , carbon nanotube , nanosecond , photochemistry , nanotechnology , chemistry , laser , composite material , organic chemistry , optics , optoelectronics , doping , mechanical engineering , physics , nuclear physics , engineering
By the example of single‐walled carbon nanotubes (SWCNT) stabilized by sodium deoxycholate in “water + polyvinyl alcohol” medium, the impact of aggregative peculiarities of a stabilizer on the efficacy of dispersing the photoactive agent is investigated. This feature is collated with respect to alternative common anionic surfactants in SWCNT suspensions. The temporal stability of dispersions of the nanocarbon (SWCNT vs carbon black) stabilized by sodium deoxycholate in a medium with controlled viscosity is juxtaposed. The optical power limiting characteristics of these dispersions versus concentration of a polymer dopant (0–3 wt%) is also monitored. In particular, the resistibility of such materials regarding bleaching phenomena in a pulse‐periodic regime (pulse repetition rate 10 Hz) of nanosecond laser irradiation (wavelength 532 nm) is addressed. It is demonstrated that optimal concentration of a polymer dopant (≈1.0 wt%) ensures elimination of bleaching with respect to the irradiation conditions studied.