Correlating membrane morphology and its performance on biosensor

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Date
2019-06
Authors
Nurul Aini Binti Zulkifly
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In recent years, a growing number of methods for synthesising membrane research have been emerged. In this work, membrane were prepared by mixing nylon 6 as polymer and methanol as solvent. The membrane were prepared with different amount of polymer which are 18 wt%, 22 wt% and 25 wt%. Each membrane are different in its morphology. Results showed that lower polymer concentration (18 wt%) will give more porous membrane compared to high polymer concentration (25 wt%). From Fourier Transform Infrared Reflectance (FTIR) images, we can said that higher polymer concentration contains high absorbance of amide I (0.75) and amide II (0.63) functional groups. In addition, different morphology had gave different performances in lateral wicking test and protein immobilization. Membrane with lower polymer concentration (18 wt %) required shorter lateral wicking time (6.87 min, fast movement) but lower protein immobilized (1706.21 mg/cm) at 1000 ppm of BSA. Findings from this work reflect the important of membrane morphologies to affect the sensing applications of a sensor.
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