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Full-Text Articles in Engineering
Theory And Computation Of Photopolymerization Induced Phase Transition And Morphology Development In Blends Of Crystalline Polymer And Photoreactive Monomer, Thein Kyu
Thein Kyu
A hypothetical phase diagram of a crystalline polymer/photoreactive monomer mixture has been calculated on the basis of phase field (PF) free energy of crystal solidification in conjunction with Flory-Huggins (FH) free energy of liquid-liquid demixing to guide the morphology development during photopolymerization of poly(ethylene oxide)/triacrylate blend. The self-consistent solution of the combined PF-FH theory exhibits a crystalline-amorphous phase diagram showing the coexistence of solid+liquid gap bound by the liquidus and solidus lines, followed by an upper critical solution temperature at a lower temperature. When photopolymerization was triggered in the isotropic region, i.e., slightly above the crystal melting transition temperatures, the …
A Preliminary Study On The Effectiveness Of Inquiry-Based Activities For Addressing Misconceptions Of Undergraduate Engineering Students, Michael Prince, M. Vigeant, K. Nottis
A Preliminary Study On The Effectiveness Of Inquiry-Based Activities For Addressing Misconceptions Of Undergraduate Engineering Students, Michael Prince, M. Vigeant, K. Nottis
Michael J. Prince
No abstract provided.
Electrospinning Route For The Fabrication Of Pn Junction Using Nanofiber Yarns, Darrell Reneker
Electrospinning Route For The Fabrication Of Pn Junction Using Nanofiber Yarns, Darrell Reneker
Darrell Hyson Reneker
Electrospinning is a simple, versatile, and cost effective method for generating nanoscale fibers, wires, and tubes. Nanowires and nanotubes could be important building blocks for nanoscale electronics, optoelectronics, and sensors as they can function as miniaturized devices as well as electrical interconnects. We report on a simple method to fabricate free standing ceramic nanofiber heterostructures, which exhibit rectifying behavior of a p-n junction
Production Of Meso-And Giga-Porous Zirconia Particles—An Improved Multi-Step Particle Aggregation Process, Abhinandan Pattanayak
Production Of Meso-And Giga-Porous Zirconia Particles—An Improved Multi-Step Particle Aggregation Process, Abhinandan Pattanayak
Abhinandan Pattanayak
No abstract provided.
Saw Dust And Neem Bark As Low-Cost Natural Biosorbent For Adsorptive Removal Of Zn (Ii) And Cd (Ii) Ions From Aqueous Solutions, Tarun Naiya, Pankaj Chowdhury, Ashim Bhattacharya, Sudip Das
Saw Dust And Neem Bark As Low-Cost Natural Biosorbent For Adsorptive Removal Of Zn (Ii) And Cd (Ii) Ions From Aqueous Solutions, Tarun Naiya, Pankaj Chowdhury, Ashim Bhattacharya, Sudip Das
PC
The ability of saw dust and neem bark as low-cost natural adsorbents were investigated for adsorptive removal of Zn(II) and Cd(II) ions from aqueous solutions. Various physico-chemical parameters such as pH, initial metal ion concentration, and adsorbent dosage level and equilibrium contact time were studied. The optimum pH for adsorption was found to be 5 for Zn(II) and 6 for Cd(II). Kinetics data were best described by pseudo-second-order model. Mass transfer coefficients were also determined for individual adsorbents for removal of Zn(II) and Cd(II) ions from aqueous solutions. The equilibrium adsorption data were fitted to Langmuir and Freundlich isotherm models …