Correlating membrane morphology and its performance on biosensor
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Date
2019-06
Authors
Nurul Aini Binti Zulkifly
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Abstract
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.