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Relative Importance of the Effects of Seed and Feed Stage ...

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362 Krishnan et al.<br />

Table 2. 22 Factorial design <strong>of</strong> experiments to study <strong>the</strong> effects <strong>of</strong> seed stage <strong>and</strong> feed stage rotational speeds.<br />

Expt.<br />

<strong>Seed</strong> stage<br />

rpm*<br />

<strong>Feed</strong> stage<br />

rpm*<br />

Coagulum<br />

(pphm)<br />

Dv<br />

(nm)<br />

Water-soluble<br />

species in final<br />

latex (g)<br />

Viscosity**<br />

(cP)<br />

1 150 ( 1) 150 ( 1) 0.0248 194.2 17.48 6.88<br />

2 400 (+1) 150 ( 1) 0.0337 168.7 17.96 7.24<br />

3 150 ( 1) 400 (+1) 0.1095 197.6 16.66 6.91<br />

4 400 (+1) 400 (+1) 0.1662 170.7 16.36 7.20<br />

*The numbers in <strong>the</strong> paren<strong>the</strong>ses are <strong>the</strong> encoded levels.<br />

**At a shear-rate <strong>of</strong> 461 s 1 .

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