Jonathan W. Rajala
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Jonathan W. Rajala has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Dinesh Lolla
Biosciences and Water Filtration Division, Parker-Hannifin Corporation, Oxnard, CA 93030, USA
1 shared publication - George G. Chase
Department of Chemical and Biomolecular Engineering, The University of Akron 1 , 185 E. Mill St., Akron, Ohio 44325, USA
1 shared publication - Hyeon Ung Shin
Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325, USA
1 shared publication
Latest Publications
- Open Access
Core–Shell Electrospun Hollow Aluminum Oxide Ceramic Fibers
In this work, core–shell electrospinning was employed as a simple method for the fabrication of composite coaxial polymer fibers that became hollow ceramic tubes when calcined at high temperature. The shell polymer solution consisted of polyvinyl pyrollidone (PVP) in ethanol mixed with an aluminum acetate solution to act as a ceramic precursor. The core polymer was recycled polystyrene to act as a sacrificial polymer that burned off during calcination. The resulting fibers were analyzed with X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) to confirm the presence of gamma-phase aluminum oxide when heated at temperatures above 700 °C. The fiber diameter decreased from 987 ± 19 nm to 382 ± 152 nm after the calcination process due to the polymer material being burned off. The wall thickness of these fibers is estimated to be 100 nm.
Open AccessCore–Shell Electrospun Hollow Aluminum Oxide Ceramic Fibers
In this work, core–shell electrospinning was employed as a simple method for the fabrication of composite coaxial polymer fibers that became hollow ceramic tubes when calcined at high temperature. The shell polymer solution consisted of polyvinyl pyrollidone (PVP) in ethanol mixed with an aluminum acetate solution to act as a ceramic precursor. The core polymer was recycled polystyrene to act as a sacrificial polymer that burned off during calcination. The resulting fibers were analyzed with X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) to confirm the presence of gamma-phase aluminum oxide when heated at temperatures above 700 °C. The fiber diameter decreased from 987 ± 19 nm to 382 ± 152 nm after the calcination process due to the polymer material being burned off. The wall thickness of these fibers is estimated to be 100 nm.