CPPP 55 P influence of highly dispersed metal particles and long-term storage of 4-aminostyrene copolymers on their mechanical and structural properties.
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ZHITARU, R, ROBU, Stephan V., PALISTRANT, Natalia, RUBANIC, Vasilii, VOLODINA, Galina, ENACHE, M., MITICOV, Dmitrii. CPPP 55 P influence of highly dispersed metal particles and long-term storage of 4-aminostyrene copolymers on their mechanical and structural properties.. In: Materials Science and Condensed Matter Physics, 13-17 septembrie 2010, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2010, Editia 5, p. 179.
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Materials Science and Condensed Matter Physics
Editia 5, 2010
Conferința "Materials Science and Condensed Matter Physics"
Chișinău, Moldova, 13-17 septembrie 2010

CPPP 55 P influence of highly dispersed metal particles and long-term storage of 4-aminostyrene copolymers on their mechanical and structural properties.


Pag. 179-179

Zhitaru R1, Robu Stephan V.2, Palistrant Natalia1, Rubanic Vasilii3, Volodina Galina1, Enache M.4, Miticov Dmitrii2
 
1 Institute of Applied Physics,
2 Moldova State University,
3 Belarusian State University,
4 Technical University of Moldova
 
 
Disponibil în IBN: 20 aprilie 2021


Rezumat

It is presented the investigation of 4-aminostyrene copolymers with butyl methacrylate (AST) doped with super fine nano and micro- dimensional metal particles. This material is wide use in photonic for optical information registration . In order to improve physico-mechanical properties of polymers the ultra dispersed metal particles (Cu, Zn), introduced. In order to refine metal particles dispersion degree, polymer solutions containing metal particles were exposed to ultrasonic (US, λ=5μm) action from 0,5 to 10minute It was established that the presence of 5-15 % of metal particles and US lead to an increase of polymeric material´s microhardness (H) by 3-4 times, that is indicate of its hardening. In this case the time of US action, type and concentration of introducing metal nanoparticles determine the strength degree of AST copolymers. It was revealed the optimal conditions of joint action of two factors (sonorization and doping): the maximal value of microhardness on AST films is observed under 15wt% Cu, 1,5 min of sonorization and 5wt% Zn;0,5min of US. For AST-30 the hardening effect takes place under all concentrations used of Zn and 1,5 minute of US. By means of X-ray analysis it was established that fine metal particles(size~ 5÷20μm) have the crystal structure and such its state does not undergo the essential changes after ultrasound treatment, [1]. It was also established that long-term storage (nearly 2 years) of polymers investigated results in added strength of AST films: its microhardness is increased by 1,3-1,7 times. The strengthening is revealed in the all interval of loads (P= 0,5-12g), fig. Depth of indentor penetration in layer achieves the 4-5 μm at film thickness ~12μm . With the help of optical and atomic force microscopies the structure of thin films was analyzed. The increase of metal particles concentration in polymer leads to an increase of the dimensions of metal insertions due to the coagulation of nano- and microparticles into conglomerate. Special changes of surface structure of AST copolymers after storage was not find out.Fig. Dependence of microhardness on the external force of indentation: 1-before storage, 2- after 2 years of ageing.