| Summary: | 碩士 === 國立臺灣師範大學 === 化學系 === 101 === In this study, we manufacture functional microtube array membrane
with co-axial electrospinning, were used in chromatography and
spectroscopy. Experiments were made use of seven thousand five
hundred volts to create a high voltage electric field as the driving force,
shooting multi-hole hollow fiber via electrospray and fiber will be
collected by collecting drum side by side to form microtube array
membrane. Hollow fiber wall porosity can be regulated with the
experimental parameters, and the diameter of membrane is about 20 μm,
the wall thin 2 μm approximately.
Microtube array membrane has excellent adsorption characteristics,
the adsorbed organic gases can be quickly desorbed after heating.
Combine with gas chromatography can be used as high efficiency and
repeatedly absorption / desorption materials. For example, 1 mg
polylactic acid fiber can adsorb / desorb about 0.15 mg acetone steam. In
addition, the electrospinning method is very easy to mix a variety of
nanoscale particles in the fiber wall.
At last, we choose Malachite green as the target compound, via the
microtube array membrane contain with nanosilver particle. We can get a
very clear spectra of malachite green based on surface-enhanced Raman
effect. Moreover, nanosilver particle exist in solid type can be stored
much longer than liquid type.
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