Session: 15-01-01: ASME International Undergraduate Research and Design Exposition

Paper Number: 100395

100395 - Anti-Corrosion Behavior of Mg and Zn Nanoparticle Incorporated Nanofiber Membrane 

The primary goal of this study is to evaluate the structural efficacy of Mg and Zn nanoparticles (NP) loaded polycaprolactone (PCL) nanofiber membrane (NFM) coating on steel in reinforced concrete. The specific objectives are: (1) to immobilize Mg and Zn nanoparticles with PCL NFM; (2) to determine the structure and morphology of the Mg-PCL-NFM and Zn-PCL-NFM by Scanning electron microscope (SEM) and Energy Dispersive Spectroscopy (EDS); and (3) to measure the effectiveness of the above nanofiber membrane coating on the interface fracture strength between steel and concrete in a non-corrosive and corrosive environment. A 5 wt. % of each kind of NPs will be accurately weighed and sonicated for 30 minutes to properly disperse in acetone. Then, PCL beads will be added to the above solution so that the final solution contains 15 wt.% PCL, and the mixture will be stirred with a magnetic stirrer for 12h to ensure the dissolution of the pellets and proper mixing. About 10ml of the prepared solutions with each group of PCL solution will be taken in glass syringes and electrospun individually on drum collector to produce each of the NPs added PCL NFM. The needle were positively charged. The path of an electromagnetic field is generated by the potential difference between the charged needle and a drum collector. The deposited fibers were harvested to produce Mg-PCL and Zn-PCL NFM on the drum collector. Our visual examination confirms that it is possible to tether Mg and Zn NP with PCL nanofiber using our electrospun process. The color of PCL nanofiber membranes is white, whereas Zn-PCL-NFM and Mg-PCL-NFM were brown and dark brown in color. The scanning electron microscope image confirms Mg NP immobilized PCL NFM (referred to as Mg-PCL), and Zn NP immobilized PCL NFM (referred to as Zn-PCL) for morphological analysis and material testing. Mg-PCL and Zn-PCL were produced according to our previous work. to measure the effectiveness of the above nanofiber membrane coating on the interface fracture strength between steel and concrete in a non-corrosive and corrosive environment, a ½ inch diameter steel rod was coated with each group of PCL NFM for material test samples. The fibers were uniformly coated on the rod by rotating the rod with constant speed using a motor. The coated and uncoated rod was placed at the center of a cylindrical mold. A steel rod without coating was considered as a control sample. A commercial-grade concrete mixer was poured into the mold. After complete curing of each group of metal/concrete samples, mold was removed and kept in water for two weeks period. Mechanical tests will be conducted on the metal/concrete to measure the effect of coating on the interface strength.

Presenting Author: Hussein Alizereej University of Central Oklahoma

Presenting Author Biography: Hussein was an undergraduate student when he conducted this research.

Authors:

Hussein Alizereej University of Central Oklahoma
Onyedikachi Oti University of Central Oklahoma
Musharraf Zaman University of Oklahoma
Morshed Khandaker University of Central Oklahoma