Báo cáo vật lý: "THE EFFECT OF ADDITIVES ON THE SIZE OF Fe3O4 PARTICLES" ppt

... 4. CONCLUSION The SeO 2 /UHP/PEG-400 system is more reactive and selective, and when one considers the combined benefits of economics, selectivity and safety, UHP emerges as one of the ... containing 30 ml of the test solution. The final observations were recorded on day 8. The experiment was repeated 3 times at 27 ± 2°C. 3. RESULTS AND DISCUSSION Sesquit...

Ngày tải lên: 07/08/2014, 14:20

... various additives. Generally, the additives have a significant influence on the size and size distribution of resultant products. In relation to the normally prepared magnetite, the type of additives ... reduce the surface energy of the particles therefore making the resultant particles more stable. 4. CONCLUSIONS The size, size distribution and...

Ngày tải lên: 07/08/2014, 14:20

... al. 23 concluded that at equilibrium, the magnitude of the magnetization is a function of the strength of external magnetic field, the volume concentration of the magnetic particles (their magnetic ... Under the effect of an external magnetic field, the particles of the ferrofluid aggregate and chain-clusters appear to arrange along the direction of the...

Ngày tải lên: 07/08/2014, 14:20

... research on the color effect of film crystals based on the theory of light reflection is originated from the work of Yablonovitch and John. Yablonovitch and John predicted that three dimensional ... and Table 2 show the effect of aging time on the conversion of core-shell emulsion polymers. The results indicate that the conversion increases with aging tim...

Ngày tải lên: 07/08/2014, 14:20

... 3: The effect of filler content on the hardness of PS foam produced with and without a TEDA catalyst. 4. CONCLUSION The effect of TEDA as a catalyst and waste paper filler content on the ... present the chemical composition of the organic and inorganic components of the waste paper. The addition of fillers, which serve to reinforce the foam, sign...

Ngày tải lên: 07/08/2014, 14:20

... often increase the performance of polymeric products. The degree of improvement depends on the choice of filler origin, particle size and shape, the fraction of filler, and the surface treatment ... hydroxyl group of the fibre. 8–14 This article reports the result of an investigation on the effect of MAPP as a compatibiliser on the mechanical p...

Ngày tải lên: 07/08/2014, 14:20

... 1: Effect of filler content on the fracture toughness of the PMMA matrix containing 10 wt% BaTiO 3 . 3.2 The Effect of SBF Exposure on Fracture Toughness The mechanical properties of ... 1 0Effect of Filler Incorporation on the Fracture Toughness Properties 4. CONCLUSION The general behaviour of the tested materials showed that the dry sam...

Ngày tải lên: 07/08/2014, 14:20

... The elongation break is further reduced to less than 50% as the filler concentration increased to 15 phr and 25 phr. When the percentage of filler loading was increased, the ductility of the ... (phr) Elongation at break (%) Untreated Fibers Treated Fibers Figure 3: Effect of filler loading on the elongation at break of the LDPE/WHF composites with untreated and...

Ngày tải lên: 07/08/2014, 14:20

... L. (2003). Chemistry of silica at different concentrations of non-ionic surfactant solutions: Effect of pH of the synthesis gel on the preparation of mesoporous silica. Microporous Mesoporous ... Si-OH 2 + . 22 The hydrated PEO was protonated or H + interacted to the EO part through the electrostatic interaction (S 0 H + ) upon the addition of HCl. The hyd...

Ngày tải lên: 07/08/2014, 14:20

... equation (5). Understanding the changes in these two constant values would lead to a better understanding of the changes in the E a . Observation of the trend of the curve-line from the left ... respectively the least and the most sensitive to the influence of temperature. This observation is not in consistent to the trend of o TT     value on each veg...

Ngày tải lên: 07/08/2014, 14:20