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Polymer and Organic Materials Commons™
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Articles 31 - 33 of 33
Full-Text Articles in Polymer and Organic Materials
Optimizing Solvent Blends For A Quinary System, Thomas L. Hoy
Optimizing Solvent Blends For A Quinary System, Thomas L. Hoy
Williams Honors College, Honors Research Projects
The Department of Polymer Engineering had received a grant from the Keck foundation to produce a process in which hundreds of copolymers can be formulated, synthesized, analyzed and then extrapolated to produce the optimal polymer for the desired material property. This process involves synthesizing approximately fifty polymers in a custom apparatus, none of which necessarily have the same monomer components. This leads to issue of which solvent or blend of solvents to use that would sufficiently dissolve both monomers and the resulting copolymer. If the monomers are not completely dissolved, a homogenous reaction will be impossible and if the copolymer …
Effect Of Nanofiber Morphology On Pvdf Air Filter Performance, Andrew W. Marton
Effect Of Nanofiber Morphology On Pvdf Air Filter Performance, Andrew W. Marton
Williams Honors College, Honors Research Projects
Poly(vinylidene fluoride) (PVDF) can be formed into small nanofibers by electrospinning that are useful for a variety of applications. Air filters produced with PVDF are known to capture ionic particles with high efficiency. Existing studies have focused on the effects of electrospinning conditions on nanofiber morphology. In this study fibers were generated with varying morphologies. Air filters were then made from each sample and then characterized by TSI. Air filters were found to have increased resistances relative to their capture efficiencies according to particle diameter. Capture efficiencies did not correlate strongly with particle diameter, and the presence of beads in …
Reusable Adhesive Tapes From Electrospun Polymer Fibers, Vishal K. Chaurasia
Reusable Adhesive Tapes From Electrospun Polymer Fibers, Vishal K. Chaurasia
Williams Honors College, Honors Research Projects
Many emerging applications demand an adhesive that has reusable properties. The adhesive must exhibit high adhesion strength to various surfaces and be able to be removed easily and then reapplied with minimal to no loss in adhesion strength. This work aims to tackle this problem by creating an adhesive tape fabricated by electrospinning polymer solutions onto a substrate. Electrospun adhesive nano/micro fibers have the ability to display the reusable characteristics desired. Several adhesive custom formulations were first developed and optimized for electrospinning. Then these formulations were successfully electrospun on to various substrates after much fine tuning of electrospinning parameters. The …