Polymeric resists, performance parameters

Parameters of flux behavior, performance and chemical stability of the compounds polymeric are critical in membranes resistant to organic solvents. Many commercially available membranes have low stability to nonpolar hydrocarbons, as hexane. Several manbranes composed of PVDF are also destroyed by hexane, possibly due to the incompatibility of the membrane composite support material to this solvent [31]. 

The reinforcement effect of sisal fiber content on the flexural creep performance and flexural modulus of cellulose derivatives/ starch composites was studied by A1 Verez et al. [15]. Fiber content and temperature effects were also considered, taking into account various methods and equations. At short times, a creep power law was employed. A master curve with the Arrhenius model was used to determine the creep resistance at longer times and different temperatures. Good fitting of the experimental results with the four-parameter model was reported, leading to a relationship between the observed creep behavior and the composite morphology. The addition of sisal fibers to the polymeric matrix promoted a significant improvement of the composite creep resistance. 

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