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Phase equilibria in the Fe–Nb–Zr system at 1,200 °C were determined by X-ray diffraction (XRD) and scanning electron microscope (SEM) coupled with energy-dispersive X-ray spectroscopy (EDS) techniques. Extensive NbFe2 domain was proposed in the current work. This compound existed in the composition range from 35 at% to 73 at% Fe, 12 at% to 32 at% Nb, and 0 to 32 at% Zr. In the present work, four three-phase...
Fast dissolution nanofiber membranes were prepared using electrospinning process with Ferulic Acid (FA)--a traditional Chinese medicine as the active pharmaceutical ingredients and a pharmaceutical hydrophilic polymer--polyvinylpyrrolidone K30 as the filament-forming matrix. Field Emission Scanning Electronic Microscopy (FE-SEM), Differential Scanning Calorimetry (DSC), Attenuated Total Reflection...
The API (Active Pharmaceutical Ingredients) physical status and distributions in the drug-loaded fibers have a manifest influence on the drug-loaded capabilities and drug-released controlled properties. In the present study, an easy and useful method was developed for determining the drug physical status and distributions in the wet spinning API-loaded fibers. The fibers prepared from co-dissolved...
With the rapid development of the global industries and the impact this is having on atmospheric and environmental conditions, increased radiations factors are becoming more problematic. This study describes the application of a kind of new green solvent composed of [BMIM] + Cl-) + ([BMIM] + BF4-) ionic liquids by wet spinning to prepare papain-carried wood cellulose fibers. And the dissolution process...
Novel membranes were prepared through covalently coupling of chitosan (CS) to activate nylon membrane after the reaction of the microporous nylon membrane with formaldehyde. Non-specific adsorption on the CS-coated nylon membrane decreased greatly. Yellow 3G-P/Reactive Red 120 were then covalently immobilized onto composite membrane as dye ligands. These Red 120/Yellow 3G-P-CS-membranes were used...
A novel drug delivery device (DDD) with complex structures for providing linear drug release profiles was designed and fabricated directly from the CAD models using three-dimensional printing technique (3DP) systems. The DDDs were in donut shape and had local concentration variations of the release-retarding polymer in their three regions. Environmental scanning electron microscopy clearly showed...
The present study provides the methods of preparing organic/inorganic hybrid nanofiber mats. A simple process was developed in preparing polyacrylonitrile/kaolinite hybrid nanofiber mats based on electrospinning technology. The electrospinning of sub-nano kaolinite particles-contained PAN suspensions resulted in uniform distribution of kaolinite particles among the PAN nanofibers, which was demonstrated...
In the present study, Eudragit L100 was successfully spun into ultrafine fibers using electrospinning process. The electrospinnability of Eudragit L100 in DMAc, ethanol, methanol, and the mixed solvents of DMAc and methanol with different ratios were examined. The morphologies of the as-spun Eudragit L100 fiber mats were observed using SEM. The results demonstrated that Eudragit L100 was able to be...
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