Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"Ethylenimine"”.
-
Microwave Spectroscopic Studies in Small Ring Compounds: 1-Methylcyclopropene and Ethylenimine
Made available in DSpace on 2014-12-09T17:36:13Z (GMT). No. of bitstreams: 1 6910744.pdf: 2312011 bytes, checksum: 78e955d9913efd4dad2a0030324d9608 (MD5) Previous issue date: 1968
-
POLY(ETHYLENIMINE)-BASED ELECTROLYTES FOR BATTERIES AND FUEL CELLS: SYNTHESIS, MODIFICATION AND CHARACTERIZATION
Poly(ethylenimine) (PEI) is an ion conducting polymer with great potential for applications in lithium batteries and proton exchange membrane fuel cells. Branched poly(ethylenimine) was N—methylated via an Eschweiler—Clarke reaction to produce branched poly(N—methylethylenimine), …
-
Poly(ethylenimine)-Functionalized Pyroxene Nanoparticles Embedded on Diatomite for Removal of Total Organic Carbon from Industrial Wastewater: Batch and Fixed-bed studies
… friendly, multifunctional, and effective poly(ethylenimine)-functionalized pyroxene nanoparticles to provide an efficient removal of the dissolved total organic carbon from industrial wastewater in batch and contenuious fixed-bed column studies under various conditions. Our study includes …
-
La spectroscopie des complexes de transfert de charge peut contribuer à l'interprétation du premier potentiel d'ionisation du donneur (éthylenimine, oxyde d'éthylene, sulfure d'éthylene)
… (MO) involved in the ionization process of ethylenimine, ethylene oxide and ethylene sulfide. Very likely the first IE corresponds to the ionization of the non-bonding (n) orbital located on the N and O atoms. Owing to the closeness of the "n" and "pi" IE for sulfides, in the case of …
-
A study of recognition coating response for quartz crystal microbalances
… a QCM coated with varying thicknesses of poly(ethylenimine) (PEI) coating, produces a linear response that is sensitive and selective. The selectivity of the PEI coating toward analytes increases with aliphatic chain length probably due to dispersive interactions. A linear relationship between …
-
Reactivity studies of phosphoric amides and esters
… nitrogen atom of the phosphdramidates, yielding ethylenimine derivatives was found to be the preferred reaction-pathway; the alternative 1,5-reaction involving the amide nittogen or phosphoryl oxygen atoms was not observed. No intramolecular nucleophilic displacement occurred in the β-chloroethyl …
-
Polyelectrolyte multilayer thin films with antimicrobial, antifouling and drug releasing properties
… polycation, linear NNdodecyl, methyl- poly(ethylenimine) (DMLPEI) with microbicidal activity was layered with a hydrophilic polyanion, such as poly(acrylic acid) (PAA), to create LbL films highly effective against Escherichia coli and Staphylococcus aureus (Gram negative and positive …
-
Investigation of Distribution and Transport of CO2 in Polyimine/MCM-41 Hybrid System: Modeling and Simulation Approach
… The study investigates traditional poly(ethylenimine) (PEI) sorbents and novel poly(propylenimine) (PPI) and their derivatives, addressing the pressing environmental challenge of CO2 accumulation. The research encompasses the following objectives: exploring CO2 transport in the …
-
Nanoscale surface modification of wood veneers for adhesion
… chloride) (PDDA) or poly (ethylenimine) (PEI) was adsorbed. Both X-ray photoelectron spectroscopy (XPS) and Carbon-Nitrogen-Sulfur analyzer (CNS) were used to quantify the amount of charged polymer on wood surfaces to elucidate optimal pH and ionic strength for …
-
Bioreducible Polymer Nanosystems For Gene Delivery
… insertion of a non-bioreducible polycation, poly(ethylenimine) (PEI), as a barrier layer and crosslinking of the LbL films using 1,5-diiodopentane. The PEI barrier layer is found to be effective in lowering the degradation rate of the film. Without the PEI barrier layer, the PAA/DNA films undergo …
-
Regulated release of a novel non-viral gene delivery vector from electrospun coaxial fiber mesh scaffolds
… a commercially available cationic polymer, poly(ethylenimine), PEI, was chemically conjugated to a ubiquitous glycosaminoglycan, hyaluronic acid (HA). The novel polymer, PEI-HA, had significantly reduced toxicity and improved transfection efficiency with multipotent human mesenchymal stem cells. …
-
Mechanisms of Cytotoxicity and Intracellular Trafficking for Gene Delivery Polymers
… the intracellular mechanisms of linear poly(ethylenimine) (PEI) and how it compares to poly(L-tartaramidopentaethylenetetramine) (T4) and poly(galactaramidopentaethylenetetramine) (G4), two poly(glycoamidoamine)s synthesized by our group. The long-term goal of this project is to develop …