Polymeric Nanofibers

Downloaded by 46.161.58.86 on May 23, 2016 | http://pubs.acs.org Publication Date: February 23, 2006 | doi: 10.1021/bk-2006-0918.ap001

Color insert page 1

Plate 2.2. A diagram showing the end of the straight segment, followed by the onset and development of three successive generations of right handed bending instabilities. The convention usedfor handedness is that if the right hand is rotated in the direction of the fingers, the hand will advance along a righthanded helix in the direction of the thumb.

Reneker and Fong; Polymeric Nanofibers ACS Symposium Series; American Chemical Society: Washington, DC, 2006.


Color insert page 2

Plate 3.1. Experimental setup of the interference color technique

Plate 3.2. Comparison between interference colors andjet diameters measure at points along the jet, using light diffraction. The diagram at the right show the range of colors predictedfrom the trichromatic theory of color vision.



Color insert page 3

Plate3.3a. Interference colors on a single jet during electrospinning (Increasing voltage from left to right)

Plate 3.3b. Interference colors on a twin jet initiatedfrom a single droplet (Increasing voltage from left to right)



Color insert page 4

Plate 3.4. Laser diffraction measurement of electrospinning jet diameter measured at different voltages. Polynomials fitted to the data are shown.

Plate 3.5. Interference colors on a triple jet initiatedfrom a single droplet (From left to right: 34ms, 68ms, 102ms and 136ms after voltage was droppe



Color insert page 5

Plate 7.2. Schematic of a liquid drop suspendedfrom a capillary.

Plate 7.8. FEA calculation of the electricfielddistribution of a 5-electrode system using secondary electrodes to minimize the interactionsfromadjacent electrodes

Plate 7.9. FEA calculation of the electricfielddistribution of a 5-electrode system with 2 ejecting jets using secondary electrodes to minimize the interactionsfromadjacent electrodes.



Color insert page 6

Plate 7AO. Prototype multiple-jet electrospinning apparatus.

Plate 7.11. (A) Fluid distribution, (B) linear array electrode assembly in the prototype multiple-jet electrospinning apparatus.


Color insert page 7


Plate 8.1. A simple horizontal electrospinning setup

Plate 8.2. (a) Electrospun polyethylene oxide(PEO) fibers on an aluminum Target, and (b) SEM image of the same fibers.

Plate 8.4. Effect of disc electrode radius and injection parameter on current density as a function of radial distance on the target.



Color insert page 8

Plate 8.5. Electrospinning setup with the disc electrode (target not shown)

Plate 8.6. Plot ofspread of fibers on target versus the disc diameter (applied voltage = 17.5KV, source to target distance = 16cm)



Color insert page 9

Plate 8.7. Schematic of effect of disc electrode on the instability initiation and fiber spread, (a) without the disc electrode and (b) with the disc electrode.

Plate 8.8. Comparison offiber spread results - experimental versus^ model with 5 cm data used to determine injection parameter value



Color insert page 10

Plate 8.10. Directing the electrospinning jet onto the target

Plate 8.13. Cone target setup with one cone attached to a motor




Plate 12.2. (a) TEM of unstained electrospun PLA / silver acetate fibers and (b) schematic process for the preparation ofpolymer tubes with metal nanoparticles via functionalized template fibers.

Plate 12.8. Fluorescence microscopy (a) and TEM (a) of electrospun PVA-Anth fibers.




Plate 12.9. Fluorescence optical microscopy of PPX-P VA/PAA tubes functionalized by anthracene (a, magn. 480x) and necking-type defect (b)

Plate 15.1. LSCM image of gelatin scaffold seeded with MG63 osteoblast cells.




Plate 18.7. (A) CVs ofHCSA doped-PANI/PS nanofiber sensors at different H 0 concentrations. (B) The current response ofHCSA-doped PANI/PS nanofiber and spin-cast sensors at various H 0 concentrations. Note that the current response has been scaled by the weight of the polymer material deposited on the electrodes. 2

2

2

2

Plate 18.8. (A) CVs showing the H 0 peaks with varying concentration ofglucose solution for HCS-doped PANI/PS nanofiber sensor. (B) The current response ofHCSA-PANI/PS nanofiber and spin-castfilmsensors dt various glucose concentrations. Note that the current response has been scaled by the weight of the polymer material deposited on the electrodes (scan rate = 100 mV/s). 2

2




Plate 25.3. Nylon Nanofiber mat

Plate 25.4. Nanofiber composite




Plate 25.5. Optical micrograph of voids in the electrospun fiber composite

Plate 25.6. Nylon/Vinyl ester nanofiber compositesfilms~9 % fiber volume fraction


Polymeric Nanofibers

Recommend Documents