4 research outputs found
ΠΠ΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ½Π΅ ΡΠ° ΠΌΠ΅Ρ Π°Π½ΠΎ-ΡΠΎΡΠ±ΡΡΠΉΠ½Π΅ ΠΌΠΎΠ΄ΠΈΡΡΠΊΡΠ²Π°Π½Π½Ρ Π²ΠΈΡΠΎΠΊΠΎΠ΄ΠΈΡΠΏΠ΅ΡΡΠ½ΠΎΠ³ΠΎ ΠΊΡΠ΅ΠΌΠ½Π΅Π·Π΅ΠΌΡ Π² ΡΠΌΠΎΠ²Π°Ρ Π³Π°Π·ΠΎΠ²ΠΎΠ³ΠΎ Π΄ΠΈΡΠΏΠ΅ΡΡΡΠΉΠ½ΠΎΠ³ΠΎ ΡΠ΅ΡΠ΅Π΄ΠΎΠ²ΠΈΡΠ°
Methods of geometric and solvate-stymulated mechano-sorption-activated modification of fumed nanosilica in the gaseous dispersion media were developed and used to prepare functionalyzed nanofillers for polymeric systems. Non-volatile high- and low-molecular weight compounds (such as polymers, organic bioactive compounds, organic and inorganic salts) can be used as modifiers of nanofillers.ΠΡΠ»ΠΈ ΠΎΠΏΠΈΡΠ°Π½Ρ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ½Π΅ ΡΠ° ΡΠΎΠ»ΡΠ²Π°ΡΠΎ-ΡΡΠΈΠΌΡΠ»ΡΠΎΠ²Π°Π½Π΅ ΠΌΠ΅Ρ
Π°Π½ΠΎΡΠΎΡΠ±ΡΡΠΉΠ½Π΅ ΠΌΠΎΠ΄ΠΈΡΡΠΊΡΠ²Π°Π½Π½Ρ Π²ΠΈΡΠΎΠΊΠΎΠ΄ΠΈΡΠΏΠ΅ΡΡΠ½ΠΎΠ³ΠΎ ΠΊΡΠ΅ΠΌΠ½Π΅Π·Π΅ΠΌΡ Π² ΡΠΌΠΎΠ²Π°Ρ
Π³Π°Π·ΠΎΠ²ΠΎΠ³ΠΎ Π΄ΠΈΡΠΏΠ΅ΡΡΡΠΉΠ½ΠΎΠ³ΠΎ ΡΠ΅ΡΠ΅Π΄ΠΎΠ²ΠΈΡΠ°. Π’Π°ΠΊΡ ΡΠΏΠΎΡΠΎΠ±ΠΈ ΠΌΠΎΠ΄ΠΈΡΡΠΊΡΠ²Π°Π½Π½Ρ Π΄ΠΎΠ·Π²ΠΎΠ»ΡΡΡΡ ΠΎΠ΄Π΅ΡΠΆΡΠ²Π°ΡΠΈ ΡΡΠ½ΠΊΡΡΠΎΠ½Π°Π»ΡΠ·ΠΎΠ²Π°Π½Ρ Π½Π°ΠΏΠΎΠ²Π½ΡΠ²Π°ΡΡ ΠΏΠΎΠ»ΡΠΌΠ΅ΡΠ½ΠΈΡ
ΡΠΈΡΡΠ΅ΠΌ Π½Π° ΠΎΡΠ½ΠΎΠ²Ρ Π½Π°Π½ΠΎΡΠΎΠ·ΠΌΡΡΠ½ΠΎΠ³ΠΎ ΠΊΡΠ΅ΠΌΠ½Π΅Π·Π΅ΠΌΡ. ΠΠ»Ρ ΠΌΠΎΠ΄ΠΈΡΡΠΊΡΠ²Π°Π½Π½Ρ ΠΌΠΎΠΆΠ½Π° Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°ΡΠΈ Π½Π΅Π»Π΅ΡΠΊΡ Π²ΠΈΡΠΎΠΊΠΎ- ΡΠ° Π½ΠΈΠ·ΡΠΊΠΎΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½Ρ ΠΎΡΠ³Π°Π½ΡΡΠ½Ρ ΡΠΏΠΎΠ»ΡΠΊΠΈ β ΠΏΠΎΠ»ΡΠΌΠ΅ΡΠΈ, Π±ΡΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΎ Π°ΠΊΡΠΈΠ²Π½Ρ ΡΠΏΠΎΠ»ΡΠΊΠΈ, ΠΎΡΠ³Π°Π½ΡΡΠ½Ρ ΡΠΎΠ»Ρ, Π° ΡΠ°ΠΊΠΎΠΆ Π½Π΅ΠΎΡΠ³Π°Π½ΡΡΠ½Ρ ΡΠΎΠ»Ρ
Adsorption and Migration of Poly(Vinyl Pyrrolidone) at a Fumed Silica Surface
A series of poly(vinyl pyrrolidone) (PVP)/fumed silica powder samples were studied using adsorption, FT-IR and AFM methods. Mild treatment (293 K for several hours) of PVP/A-300 powder with an added additional portion of A-300 in a glass reactor (2 dm 3 ) using a mixer (> 500 rpm which provided the powder as a pseudo-liquid state, PLS) led to the redistribution (migration) of the PVP molecules between silica particles previously covered by PVP and free of PVP. This time-dependent rearrangement of the adsorbed PVP molecules caused the formation of a denser polymer layer at the silica surface. The aggregate size of the primary silica particles with adsorbed PVP molecules decreased after treatment. The volume of macropores with a pore radius R p > 25 nm increased due to the decrease in the distances between aggregates in agglomerates because of the adhesive effect of the PVP molecules. However, the volume of micropores at R p < 1 nm decreased because of the penetration of the PVP molecules into the primary silica particle aggregates and the filling of gaps between adjacent particles. A decrease occurred in the amount of adsorbed water in the PVP layer exhibiting a maximum density
Ellipsometric study of ion implanted copper surface and its room temperature oxidation
The room temperature oxidation of ion-implanted copper surface has been studied ex situ and in situ using ellipsometry. The ellipsometric parameters T and Π were measured at light incidence angle 75Β° for different wavelength values in the range of 280 to 760 nm using averaging both over two azimuthal zones and single one. The oxide layer was removed from the copper surface during the aluminum ion implantation an then the growth of the newly formed oxide film on the ion implanted surface was studied by ellipsometry. Basing on the spectroellipsometric data, the oxide film thickness has been calculated for two types of copper oxides.ΠΡΠΎΠ²Π΅Π΄Π΅Π½Ρ ΡΠ»Π»ΠΈΠΏΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΎΠΊΠΈΡΠ»Π΅Π½ΠΈΡ ΠΏΡΠΈ ΠΊΠΎΠΌΠ½Π°ΡΠ½ΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΠΈΠΎΠ½Π½ΠΎ-ΠΈΠΌΠΏΠ»Π°Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ΅ΠΉ ΠΌΠ΅Π΄ΠΈ. ΠΠ»Π»ΠΈΠΏΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡ T ΠΈ Π ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½Ρ ΠΏΡΠΈ ΡΠ³Π»Π΅ ΠΏΠ°Π΄Π΅Π½ΠΈΡ ΡΠ²Π΅ΡΠ° 75Β° Π΄Π»Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
Π²Π΅Π»ΠΈΡΠΈΠ½ Π΄Π»ΠΈΠ½Ρ Π²ΠΎΠ»Π½Ρ ΡΠ²Π΅ΡΠ° Π² ΠΎΠ±Π»Π°ΡΡΠΈ 280β760 Π½ΠΌ Ρ ΡΡΡΠ΅Π΄Π½Π΅Π½ΠΈΠ΅ΠΌ ΠΊΠ°ΠΊ ΠΏΠΎ Π΄Π²ΡΠΌ, ΡΠ°ΠΊ ΠΈ ΠΏΠΎ ΠΎΠ΄Π½ΠΎΠΉ Π°Π·ΠΈΠΌΡΡΠ°Π»ΡΠ½ΡΠΌ Π·ΠΎΠ½Π°ΠΌ. ΠΠΊΡΠΈΠ΄Π½Π°Ρ ΠΏΠ»Π΅Π½ΠΊΠ° Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΌΠ΅Π΄ΠΈ ΡΠ΄Π°Π»ΡΠ»Π°ΡΡ Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ Π΅Π΅ ΠΈΠΌΠΏΠ»Π°Π½ΡΠ°ΡΠΈΠΈ ΠΈΠΎΠ½Π°ΠΌΠΈ Π°Π»ΡΠΌΠΈΠ½ΠΈΡ, Π° Π·Π°ΡΠ΅ΠΌ ΡΠΎΡΡ Π²Π½ΠΎΠ²Ρ ΡΠΎΡΠΌΠΈΡΡΠ΅ΠΌΠΎΠΉ ΠΏΠ»Π΅Π½ΠΊΠΈ ΠΎΠΊΡΠΈΠ΄Π° ΠΌΠ΅Π΄ΠΈ Π½Π° ΠΈΠΌΠΏΠ»Π°Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ ΡΠ»Π»ΠΈΠΏΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Ρ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠ»Π»ΠΈΠΏΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π΄Π°Π½Π½ΡΡ
ΡΠ°ΡΡΠ΅ΡΡ ΡΠΎΠ»ΡΠΈΠ½ ΠΏΠ»Π΅Π½ΠΎΠΊ Π΄Π»Ρ Π΄Π²ΡΡ
ΡΠΈΠΏΠΎΠ² ΠΎΠΊΡΠΈΠ΄ΠΎΠ² ΠΌΠ΅Π΄ΠΈ.ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ Π΅Π»ΡΠΏΡΠΎΠΌΠ΅ΡΡΠΈΡΠ½Ρ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΠΎΠΊΠΈΡΠ½Π΅Π½Π½Ρ ΠΏΡΠΈ ΠΊΡΠΌΠ½Π°ΡΠ½ΡΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ ΡΠΎΠ½Π½ΠΎ-ΡΠΌΠΏΠ»Π°Π½ΡΠΎΠ²Π°Π½ΠΈΡ
ΠΏΠΎΠ²Π΅ΡΡ
ΠΎΠ½Ρ ΠΌΡΠ΄Ρ. ΠΠ»ΡΠΏΡΠΎΠΌΠ΅ΡΡΠΈΡΠ½Ρ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈ Π’ Ρ Π Π²ΠΈΠΌΡΡΡΠ½ΠΎ ΠΏΡΠΈ ΠΊΡΡΡ ΠΏΠ°Π΄ΡΠ½Π½Ρ ΡΠ²ΡΡΠ»Π° 75Β° Π΄Π»Ρ ΡΡΠ·Π½ΠΈΡ
Π²Π΅Π»ΠΈΡΠΈΠ½ Π΄ΠΎΠ²ΠΆΠΈΠ½ΠΈ Ρ
Π²ΠΈΠ»Ρ ΡΠ²ΡΡΠ»Π° Π² ΠΎΠ±Π»Π°ΡΡΡ 280-760 Π½ΠΌ Π· ΡΡΠ΅ΡΠ΅Π΄Π½Π΅Π½Π½ΡΠΌ ΡΠΊ Π·Π° Π΄Π²ΠΎΠΌΠ°, ΡΠ°ΠΊ Ρ Π·Π° ΠΎΠ΄Π½ΡΡΡ Π°Π·ΠΈΠΌΡΡΠ°Π»ΡΠ½ΠΈΠΌΠΈ Π·ΠΎΠ½Π°ΠΌΠΈ. ΠΠΊΡΠΈΠ΄Π½Π° ΠΏΠ»ΡΠ²ΠΊΠ° Π· ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΠΌΡΠ΄Ρ ΡΠΎΠ·ΠΏΠΈΠ»ΡΠ²Π°Π»Π°ΡΡ Ρ ΠΏΡΠΎΡΠ΅ΡΡ ΡΡ ΡΠΌΠΏΠ»Π°Π½ΡΠ°ΡΡΡ ΡΠΎΠ½Π°ΠΌΠΈ Π°Π»ΡΠΌΡΠ½ΡΡ, Ρ Π½Π°ΡΡΡΠΏΠ½ΠΈΠΉ ΡΡΡΡ Π½ΠΎΠ²ΠΎΡ ΠΏΠ»ΡΠ²ΠΊΠΈ ΠΎΠΊΡΠΈΠ΄Ρ ΠΌΡΠ΄Ρ Π½Π° ΡΠΌΠΏΠ»Π°Π½ΡΠΎΠ²Π°Π½ΡΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ Π΅Π»ΡΠΏΡΠΎΠΌΠ΅ΡΡΠΈΡΠ½ΠΈΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ. ΠΠ° ΠΎΡΠ½ΠΎΠ²Ρ ΡΠΏΠ΅ΠΊΡΡΠΎΠ΅Π»ΡΠΏΡΠΎΠΌΠ΅ΡΡΠΈΡΠ½ΠΈΡ
Π΄Π°Π½ΠΈΡ
ΡΠΎΠ·ΡΠ°Ρ
ΠΎΠ²Π°Π½ΠΎ ΡΠΎΠ²ΡΠΈΠ½Ρ ΠΏΠ»ΡΠ²ΠΎΠΊ Π΄Π»Ρ Π΄Π²ΠΎΡ
ΡΠΈΠΏΡΠ² ΠΎΠΊΡΠΈΠ΄ΡΠ² ΠΌΡΠ΄Ρ