الفهرس 
Chapter 1 : IntroductionOnly 14 pages are availabe for public view
 |  | from | 131 |  |  |
| | | from | 131 | | |
Abstract
This study was dedicated to produce calcium carbonate nanoparticles and nanorods. We aim to study the use of this nanoscale CaCO3 as filler in paper industry. They can be prepared using pulse mode dosing of calcium nitrate solution. In view of the current results, it could be concluded that Increasing agitation speed from 3425 to 15900 RPM reduces the CaCO3 particle size to nanoscale The DROP wise addition of the calcium nitrate solution to the carbonate solution enhanced the control of the reaction medium saturation allowing the formation of nanoparticles of small size. However, further increase in the agitation speed induces a significant particle size widening The effect of temperature showed that cubic particles were produced at room temperature. They were gradually modified into rode-like particles as the temperature increases. The maximum obtained aspect ratio was 6.15 at 75°C and 3425 RPM.