Evaluation of the permeability of modified cellulose acetate propionate membranes for use in biosensors based on hydrogen peroxide detection
نویسندگان
چکیده
Phase inversion cellulose acetate propionate membranes showed low permeability to hydrogen peroxide aqueous solutions. Their permeability was increased by alkaline hydrolysis of the ester linking units. However, the permeability remained lower than that of an unsubstituted cellulose membrane. The inclusion of hydroxypropyl cellulose in the membrane formulation, followed by an alkaline hydrolysis step, increased permeability to hydrogen peroxide aqueous solutions to 29% of that of an unsubstituted cellulose membrane. Abbreviations: BA – n-butyl acetate, CA – cellulose acetate, CAP – cellulose acetate propionate, HPC – hydroxypropyl cellulose, THF – tetrahydrofuran.
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