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.
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Showing 1 to 18 of 18 for “"Post-modification"”.
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Novel Poly(N-substituted glycine)s : synthesis, post-modification, and physical properties
… to multi-modal dispersed polymeric systems. The post-modification of poly(N-allyl glycine) via thiol-ene photo-addition was observed to be quantitative, with the utilization of photo-initiators, and facilitated in the first glyco-peptoid prepared under environmentally benign conditions. …
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Plasmonic Surface Modifications with Hard-Core/Soft-Shell Nanoparticles
… With the focus on bottom up surface modification using self-assembly and template assisted self-assembly techniques. The optical functionalities are introduced by plasmonic nanoparticles and tailored either via the deposition or via chemical post-modification. The colloid types, which …
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A Use of Theory of Constraints Thinking Processes for Improvements in the Merged Beams Experiment at Oak Ridge National Laboratory.
… of performance from which changes were made. Post-Modification was analyzed showing the project was a success.</p><p>The overlying reasoning for this exercise was to prove successfully that continuous improvement techniques used in the manufacturing industry can also be successful in a …
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THE CONSTRUCTION OF NAPHTHOTUBES AND THEIR APPLICATIONS IN MOLECULAR RECOGNITION, ENANTIOSELECTIVE RECOGNITION AND CHARGE TRANSFER
… new amine naphthotubes were prepared through a post-modification strategy, and their properties in molecular recognition and electron transfer were explored. We hope that the findings from this research will contribute to a better understanding of molecular recognition and open new avenues for …
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Waterfowl Pair and Brood Use of Dug brood Complexes in East-Central South Dakota
Modification of wetlands has been a frequently employed management technique to enhance habitat for waterfowl and other wetland wildlife. One type of excavation in wetland basins is the dug brood complex; an interconnected system of pond units, channels, and islands, primarily created to provide …
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Synthesis and Characterization of Nanoporous Copolymers with Potential Gas Storage Applications
… precursor polymer, decreased the efficiency of post-crosslinking reactions, and thus resulted in lower surface areas. Amine-functionalized styrene/stilbene polymers were prepared via free radical polymerization or post-modification. Amine-containing silica-based sorbents were prepared using the …
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Fabrication, analysis, application, and characterization of core-containing microparticles and hydrophilic microfluidic devices produced via the primary- and in situ tertiary-amine catalyzed Michael addition of multifunctional thiols to multifunctional acrylates
… was modified from 10-85° via bulk- or post-modification techniques. These materials were prepared via the Michael addition of a secondary amine to a multifunctional acrylate, producing a nonvolatile tertiary amine utilized in the catalysis of the Michael addition of a multifunctional …
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Case studies of academic writing in the sciences: a focus on the development of writing skills
… latter class, particular reference is made to post-modification and clause-type elements which allow meanings to be combined in specific ways.
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Functional Polymers Containing Semi-Rigid Alternating Sequences
… nanoporous polymers were synthesized by the post-modification of highly-crosslinked divinylbenzene-maleic anhydride polymers. High amine-contents were achieved by covalently attaching multiamines to the acid-chloride functionalized polymer surface. The resulting polymers showed medium to high …
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Regioselective Synthesis of Glycosaminoglycan Analogs
… increasing attention in recent decades. Chemical modification is an efficient method to append new functionalities to the cellulose backbones. This dissertation describes chemical modification of cellulose and cellulose derivatives to prepare unsulfated and sulfated GAG analogs. Through these …
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Synthesis and Characterization of Novel Polybenzimidazoles and Post-modifications for Membrane Separation Applications
… thus resulting in more free volume. Two post- modification strategies including grafting and blending were utilized to incorporate the volatile components, poly(propylene oxide) and poly(ethylene oxide). Post-modified polybenzimidazole films impressively showed significant enhancements in …
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Design, Synthesis, and Evaluation of Covalent CADA Analogues as Potent TLR4 Downmodulator for the Treatment of Opioid Use Disorder
… synthesized by modifying the tail region and post modification of the sidearm. The synthesis of some of the analogues involves the debenzylation of CADA and subsequent amide coupling reactions to introduce various electrophilic groups to enhance the binding affinity and specificity towards …
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The inertisation of the zeolites ZSM-5, mordenite and beta by chemical vapour deposition using tetraethoxysilane
… coating. The seed crystals used for modification were (a) the assynthesized material, (b) detemplated but not ion-exchanged parent crystals (Na-form), and (c) detemplated and ion-exchanged parent crystals (NH4-form). The primary objective of these studies was to determine how. …
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Sustainable Mechanochemical Synthesis and Manufacturing of Metal-Organic Frameworks for Enhanced Hydrogen Storage
… synthesis, solvent-free mechanochemical modification, and scalable cold-sintering-enabled monolithic moulding technology. The design of Experiments (DoE) methodology was applied to systematically optimise the mechanochemical synthesis of CuBTC, enabling quantitative analysis of the …
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Biopolymer-Hybrid Nanomaterials for Vaccine Formulation
… vectors were explored (Figure 1). Figure 1: The modification of biopolymer NPs with functional moieties, such as cationic amino acids, peptides or polymers, enables the formulation of novel gene delivery materials. The first studies aimed at introducing positive charges to PDA NPs by using …
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Synthesis and Characterization of Poly(2-Ethyl-2-Oxazoline) Functional Prepolymers and Block Copolymers
… reactions on the polyoxazoline block. Post-modification reactions included controlled partial pendent acyl group hydrolysis under an acidic medium to form the random block copolymers of PEtOx and poly(ethyleneimine) (PEI), Michael addition of diethylvinyl phosphonate groups to PEI units …
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A TALE OF TWO METHYLATION MODIFICATIONS IN ARCHAEAL RNAs
… all the three domains of life, most RNAs undergo post transcriptional modifications both on the bases as well as the ribose sugars of the individual ribonucleotides. 2'-O-methylation of ribose sugars and isomerization of Uridines to Pseudouridines are two most predominant modifications in rRNAs …
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Structure-Property Relationships in the Design of High Performance Membranes for Water Desalination, Specifically Reverse Osmosis, Using Sulfonated Poly(Arylene Ether Sulfone)s
… derivatives: direct polymerization and post-modification of a non-sulfonated active polysulfone. The polysulfones from direct polymerization incorporated specialty sulfonated monomers, which were stoichiometrically controlled during the polymerization. Sulfonated polysulfones that were …