The effects of milling parameters such as balls diameters and ball milling speed defined by the number of balls from vials is an important parameter a milling process. extended solubility
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Solubility Study in Ag-Cu Binary System Prepared By Ball Milling Process S. M. M. Shafiei*, E. Salahi, S. A. Tayebi Fard Materials and Energy Research Center (MERC) (*) Corresponding author: [email protected] (Received:18 Mar. 2012 and Accepted: 23 June 2012) Abstract: Solid solutions of Ag-Cu were prepared via ball milling process, for
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High-energy ball milling is a ball milling process in which a powder mixture placed in a ball mill is subjected to high-energy collisions from the balls. High-energy ball milling, also called mechanical alloying, can successfully produce fine, uniform dispersions of oxide particles in nickel-base super alloys that
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Nanopowders of Centella asiatica was produced using planetary ball mill by varying milling parameters such as milling time, mass concentration, and bead amount. Particle size analysis employing photon correlation spectroscopy was carried out to record the effect of milling parameters on the particle size produced. The morphology of milled powders was also analyzed using a field emission
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The effects of milling parameters such as balls diameters and ball milling speed defined by the number of balls from vials is an important parameter a milling process. extended solubility
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Major parameters for ball milling Temperature Ball milling should be considered as a potentially attractive solution for solvent-free synthesis. 21
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Ball milling is used in the pharmaceutical industry to reduce the size of particulate material such as pharmaceutical granules. Dr Alexander Krok and Dr Sandra Lenihan from Munster Technological University, Ireland, have developed a computational approach to achieve optimal, energy-efficient size reduction in ball milling resulting in the production of high-quality particulate material (i.e
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MA process was performed under various milling times and different milling conditions including; series I–V in Table 1, in order to investigate the effect of MA parameters such as number and size of the balls, rotation speed, and powder to ball weight ratio on the synthesizing time, crystallite size and purity of final produced powders.
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These factors include i) milling time-related parameters (pause time, number of milling cycles and time of each cycle), ii) speed, iii) milling ball size, and iv) solid to solvent ratio. Nanosization by planetary ball mill significantly resulted in enhancing the dissolution rate and bioavailability of different drugs, like clarithromycin 5 and
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The effect of milling time and speed on solid solubility of V in Al and grain refinement was studied. High-energy ball milling was used to produce Al-xV (x = 2, 5, and 10 at.%) alloys at milling speeds of 280 and 350 RPM. The ball-milling time was varied from 10 to 100 hours. The ball-milled alloys were consolidated under uniaxial pressure of 3GPa at room temperature. The solid solubility of V
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solubility of the pure drug and its physical dispersions. Using ball milling technique the physical dispersions of Nimesulide with the polymers, prepared in the ratios of 1:1, 1:3, 1:5 were subjected to size reduction for two different time intervals of 30 min and 90 min,
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The effects of milling parameters such as balls diameters and ball milling speed defined by the number of balls from vials is an important parameter a milling process. extended solubility
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The mixtures were milled in a high energy ball mill (pulverisette 4 Vario-Plantary Mill, Fritsch) with a ball to powder weight ratio of 10:1 and ethanol as process control agent. The steel vial of the ball mill had 250 ml capacity. 21.858 g of powders were put into the container and equal number of steel balls of 1 and 2 cm in diameters were added.
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the ball milling effective to develop solid solubil ity of Cr to Fe powder because the high energy kinetics and the balls slugging the sample powder d uring ball milling process.The solid solubility when ball milling process is increased because the diffusion of the component atom increased. It is
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Ball mill based on co-milling, a promising way to enhance solubility of poorly soluble drugs employing norfloxacin as model drug January 2018 Acta Poloniae Pharmaceutica 75(1):155-165
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In this study, chitosan flake was micronized in a ball mill to make fine powder. The effects of the milling on properties of chitosan, such as particle size, molecular parameters, bulk density, crystalline structure, color, chemical structure, and solubility, were investigated.
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In the first-part, two excipients (HPMC and soluplus) were selected from seven, and the optimal ball-milling parameters of speed and time (18 Hz, 15 min) were determined based on solubility-enhancement and flow-ability criteria.
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The effect of milling time and speed on solid solubility of V in Al and grain refinement was studied. High-energy ball milling was used to produce Al-xV (x = 2, 5, and 10 at.%) alloys at milling speeds of 280 and 350 RPM. The ball-milling time was varied from 10 to 100 hours. The ball-milled alloys were consolidated under uniaxial pressure of 3GPa at room temperature. The solid solubility of V
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The effects of milling parameters such as balls diameters and ball milling speed defined by the number of balls from vials is an important parameter a milling process. extended solubility
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High-energy ball milling is a ball milling process in which a powder mixture placed in a ball mill is subjected to high-energy collisions from the balls. High-energy ball milling, also called mechanical alloying, can successfully produce fine, uniform dispersions of oxide particles in nickel-base super alloys that
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High-energy ball milling is a ball milling process in which a powder mixture placed in a ball mill is subjected to high-energy collisions from the balls. High-energy ball milling, also called mechanical alloying, can successfully produce fine, uniform dispersions of oxide particles in nickel-base super alloys that
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The solubility of a drug is intrinsically related to the particle size. Reduction of particle size of a drug by various means such as jet mill, rotor stator colloidal mill, ball mill, etc. leads to increase in surface area with enhanced dissolution.
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The use of ball milling as a micronization technique for enhancing drug solubility is well supported by literature dating as far back as the 1970s. Apart from its comminution function, ball milling also serves as an intensive mixing technique capable of producing co-ground drug-excipient mixtures comprising amorphous drug forms intimately mixed
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Electrochemical kinetic parameters for carbon steel powders produced by high-energy ball milling for 2, 3, and 5 h and immersed in NaOH and NaCl solutions are tabulated in Table 2. The results were obtained from the deconstruction of polarization curves in terms of the superposition model and the mixed-potential theory [ 44 , 45 ].
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In the first-part, two excipients (HPMC and soluplus) were selected from seven, and the optimal ball-milling parameters of speed and time (18 Hz, 15 min) were determined based on solubility-enhancement and flow-ability criteria.
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In the first-part, two excipients (HPMC and soluplus) were selected from seven, and the optimal ball-milling parameters of speed and time (18 Hz, 15 min) were determined based on solubility-enhancement and flow-ability criteria.
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The minimum achievable grain size and extent of alloying depend on a number of parameters i.e., type of high-energy ball mill, milling container, ball-to-powder weight ratio, milling speed, grinding medium, extent of filling of the vial, milling atmosphere, process controlling agents, milling temperature, type of material being milled etc. Synthesis of nanocrystalline metals and alloys, using
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The effect of time and frequency of the ball milling process on the extrudates were determined. The ball milling frequency was set 20, 30, or 40 Hz and the milling time to 30 min. Then, the milling time was set to 30, 40, and 50 min at milling frequency of 30 Hz. The samples were fed into the extrusion system.
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The effect of time and frequency of the ball milling process on the extrudates were determined. The ball milling frequency was set 20, 30, or 40 Hz and the milling time to 30 min. Then, the milling time was set to 30, 40, and 50 min at milling frequency of 30 Hz. The samples were fed into the extrusion system.
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However, the K a also increased with milling time increased, it showed a maximum at 2.7 × 10 −3 /s at 30-min milling, and then it decreased to 1.56 × 10 −3 /s by 60-min milling. The higher solubility than that of the intact crystal was due to the involvement of unstable amorphous parts.
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