2⁴ fractional factorial design for PVDF/Pebax film composite synthesis on gas selectivity study

Abstract

One of the key indicator for membrane film excellencies is by having a good ideal selectivity, and it is defined as the permeability ratio of two pure gases which be separated. This study focused on factors screening and interaction between involved factors in membrane film development on gas selectivity by employing 24 fractional factorial design (FFD). A total of four factors; Pebax concentration, bath temperature, evaporation times and quenching times were chosen to run simultaneously and ideal selectivity was chosen as a single respond. Order of contribution was found to be as follows; Pebax concentration > quenching times > bath temperature > evaporation times, while the most impacting factors towards gas selectivity was Pebax concentration (main effect), evaporation times - Pebax concentration (interaction effect), quenching times (main effect). The composite film produced via this design of experiment managed to obtain higher barrer of CO2 permeability of 393 and selectivity of 64.75. The outcome of the study indicates a very strong judgement in utilizing FFD to minimize and eliminate factors by considering the interaction among the factors involves in membrane film development for an ideal gas selectivity.

Processing‐structure–property relationships in the fabrication of extrusion electroactive poly(vinylidenefluoride) filaments

“…In this context, statistical DoE was used to identify the optimal processing and material parameters as well as the interaction effects among them. DoE allows all factors to be investigated together for a certain number of design variables (N) with a range of maximum and minimum values for each variable 20,21 …”

“…DoE allows all factors to be investigated together for a certain number of design variables (N) with a range of maximum and minimum values for each variable. 20,21 In both extrusion and microcompounding, there are many factors that can affect the β-phase content in the fabricated PVDF-based filaments. These include stretching ratio (SR), PVDF type, and manufacturing equipment.…”

“…In this context, it is important to consider statistical design of experiments (DoE) to achieve the required results with a fewer number of runs 19 . DoE allows all factors to be varied together for a certain number of design variables (N) with a range of maximum and minimum values for each variable 20,21 . Essalhi et al 21 used full factorial (2 3 ) DoE with center points to study the effect of electrospinning variables, individually and mutually, on the electrospun fiber diameter and distribution.…”