Average Fiber Diameter , response surfaces

The structural morphology and diameter of the nanofibers were determined by ESEM FEI quanta 200 without gold coating and 100 readings were taken for measuring average fiber diameters. Systat 10 was used for the process optimization and the response surface methodology. 

Consider the first case of the effect of levels of electric field strength and ratio of solvents - TFA/DCM on fiber diameters for different levels of chitosan concentration (Figure 15.8). The concentration of chitosan was kept at -1 level (5%), 0 level (5.5%), and +1 level (6%), respectively. The response surface equation for average fiber diameter for -1, 0 and +1 levels of chitosan concentration is given by substituting X2 = -1 in equation 15.6. Likewise, other two equations were obtained by substituting X2 = 0 and X2 = 1 in equation 15.6 as follows ... 

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