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Drag reduction polymer mixtures

Dschagarowa E, Bochossian T (1978) Drag reduction in polymer mixtures Rheol Acta 17 426... [Pg.159]

Malhotra JP, Deshmukh SR, Singh RP (1987) Turbulent drag reduction by polymer-fiber mixtures J Appl Polym Sci 33 2467... [Pg.163]

Reddy GV, Singh RP (1985) Drag reduction effectiveness and shear stability of polymer-polymer and polymer-fiber mixtures in redrculatory turbulent flow of water Rheol Acta 24 296... [Pg.164]

Figure 6 The main broad avenues of nanoparticle production. Comminution or size reduction (say by high-pressure homogenization or critical solution technology), precipitation methods by salting out or other solvency changes in solutions of drag-polymers mixtures and molecular assembly of amphipathic components. Methods are listed in Table 2. Figure 6 The main broad avenues of nanoparticle production. Comminution or size reduction (say by high-pressure homogenization or critical solution technology), precipitation methods by salting out or other solvency changes in solutions of drag-polymers mixtures and molecular assembly of amphipathic components. Methods are listed in Table 2.
Singh, R. P., Turbulent drag reduction by polymer-based mixtures and graft copolymers, Curr. ScL, 68, 736-739 (1995). [Pg.124]

Malhotra JP, Chaturvedi PN, Singh RP (1988) Drag reduction by polymer polymer mixtures. J Appl Polym Sci 36 837-858... [Pg.203]

The influence of the molecular weight distribution on the drag reduction can be seen, when a comparison between pure PAAm samples and mixtures is made, fig. 4. Both mixtures were derived from the pure polymer samples with = 8 10 g/mol and... [Pg.78]

FIGURE 13.11 Apparent viscosity versus shear rate of PEO/SDS mixtures. (From Mohsenipour, A.A., turbulent drag reduction by polymers, surfactants and their mixtures in pipeline flow, PhD thesis. University... [Pg.651]

Fig. 7. The variation of relative drag reduction with time for mixtures of pure xanthan gum (10 ppm) and polyacrylamide (10 ppm) x, Theoretical (Brostow Polymer Flow Model) , experimental (59). Fig. 7. The variation of relative drag reduction with time for mixtures of pure xanthan gum (10 ppm) and polyacrylamide (10 ppm) x, Theoretical (Brostow Polymer Flow Model) , experimental (59).
The earlier work on drag reduction by fibers, polymer/polymer, polymer/fiber, and polymer/soap mixtures has been reviewed by Singh (20) and Gyr and BewersdorfF (23). It has been noticed that fibers with high aspect ratio iUd), flexibility, and surface roughness show good drag-reduction effectiveness. At equal aspect ratio, fibers with smaller diameter cause more drag reduction. This can be attributed to the improved flexibility due to decrease in diameter of the fibers. The fibers of... [Pg.279]

Both positive and negative deviations from the linear additive line have been observed in drag reduction caused by polymer/polymer mixtures depending upon their composition, flow rate, and polymer species. The maximum synergism is obtained at a specifle composition. The random coil size, rigidity, and salvation of polymer molecules appear to be responsible for the synergism in drag reduction by polymer/polymer mixtures (169). [Pg.280]

See other pages where Drag reduction polymer mixtures is mentioned: [Pg.169]    [Pg.182]    [Pg.122]    [Pg.148]    [Pg.733]    [Pg.101]    [Pg.102]    [Pg.164]    [Pg.2252]    [Pg.2267]    [Pg.2267]    [Pg.2267]    [Pg.226]    [Pg.209]    [Pg.519]    [Pg.3]    [Pg.255]    [Pg.264]    [Pg.280]   
See also in sourсe #XX -- [ Pg.27 ]



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