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 19 of 19 for “"n-butyl acrylate"”.
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Template-Controlled Synthesis of Magnetic/Semiconducting Nanoparticles within Amphiphilic Core-Shell Cylindrical Polymer Brushes
… cylindrical polymer brushes with poly(t-butyl acrylate)-b-poly(n-butyl acrylate) (PtBA-b-PnBA) diblock copolymer side chains were synthesized via the “grafting from” technique using a combination of anionic polymerization (for the synthesis of the backbone) and atom transfer radical …
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Ion containing copolymers via the emulsion copolymerization of polar and ionic vinyl monomers
… has been studied. The copolymerization of n-butyl acrylate with sodium-pstyrene sulfonate proved to be particularly rapid. With the proper choice of chain transfer agent soluble polymers with enhanced rubbery plateaus have been synthesized. The best conditions for the polymerizations were a …
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Implementation of Multivariate Artificial Neural Networks Coupled with Genetic Algorithms for the Multi-Objective Property Prediction and Optimization of Emulsion Polymers
… of styrene and acrylic monomers such as n-butyl acrylate or copolymers of only acrylic monomers. Due to the high degree of complexity and variability of these systems, modeling their behavior according to structure-property relationships is currently impractical. Instead, this thesis will …
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Supported catalysts, from polymers to gold nanoparticles supports
… the Heck transformation of iodobenzene with n-butyl acrylate. Kinetic studies and leaching tests using poly(vinyl pyridine) and mercury were carried out resulting in the conclusion that the active species during the catalysis is not the palladium pincer complex but a leached palladium (0) …
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Capacitive Touchscreen Sensors for the Measurement of Ions in Electrolytes
… of the sensitivity to 1.3 for poly(n-butyl) acrylate and 2.4 for poly vinyl chloride. While reproducible polymer membranes can successfully be fabricated on an ITO glass sensor, the research identifies a need for additional work on ion-selective films. This work demonstrates that …
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Polymer architecture effects on mechanochemical reactions
… spiropyran mechanophores; poly(methyl acrylate), poly(ethyl acrylate), poly(n-butyl acrylate), poly(iso-butyl acrylate) and poly(tert-butyl acrylate). Results show that chain length contributes more to activation than molecular mass of the individual chains. In addition, it was …
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Functional Block Copolymers via Anionic Polymerization for Electroactive Membranes
… anion exchange achieved copolymers containing n-butyl acrylate and phosphonium ionic liquids. These compositions incorporated vinylbenzyl triphenyl phosphonium and vinylbenzyl tricyclohexyl phosphonium cations bearing chloride (Cl), or bis(trifluoromethane sulfonyl)imide (Tf2N) counteranions. …
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Synthesis and Characterization of Cation-Containing and Hydrogen Bonding Supramolecular Polymers
… studied in the context of phosphonium-containing acrylate triblock (ABA) copolymers and random copolymers. Phosphonium-containing ionic liquid monomers with different alkyl substituent lengths and counterions enabled an investigation of the effects of ionic aggregation of phosphonium cations on …
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Effects of Functionality and Charge in the Design of Acrylic Polymers
Use of a mixed triisobutylaluminum/1,1-diphenylhexyllithium intiator enabled the anionic polymerization of methyl methacrylate at room temperature, resulting in narrow molecular weight distributions and syndiorich structures. Polymerizations were controlled above Al:Li = 2, and control …
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Photo-reactive Surfactant and Macromolecular Supramolecular Structures
… from acrylic terpolymers of 2-ethylhexyl acrylate (EHA), 2-hydroxyethyl acrylate (HEA), and methyl acrylate (MA) functionalized with hydrogen bonding and photo-reactive functionalities. The synergy of hydrogen bonding and photo-reactivity resulted in higher peel values and rates of …
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Investigating the fundamentals of ring-opening metathesis polymerization to synthesize large, well-defined, bottlebrush polymers
… (MMs), one polystyrene and two poly(n-butyl acrylate) MMs, in ROMP with varying side chain chemistries and end groups, as well as rate of catalyst degradation in each of the solvents. We determined that solvent affected that rate of propagation primarily by interacting with the …
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Modification of a microbial co-polyester by graft copolymerisation
… temperature by grafting chains of poly(methyl acrylate), (which softened at the required temperature) to the microbial polyester backbone selected for this work was poly(3-hydroxybutyrate-co-3- hydroxyvalerate)(,P HV). PHV is very stable chemically and of the three methods attempted, that …
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One-dimensional hybrid nanomaterials based on cylindrical polymer brushes
… core and a poly(oligo(ethylene glycol) methacrylate) (POEGMA) shell were hydrolyzed by aqueous ammonia to produce water-soluble organo-silica hybrid nanowires. Since the trimethoxysilyl group was directly incorporated into the structure of the CPB, the addition of an external inorganic …
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Kinetics of Polymer Interfacial Reactions
… surface and alkyne end-functional poly (n-butyl acrylate) (PnBA) and polystyrene (PS), via a copper-catalyzed 1,3-dipolar cycloaddition reaction. Time-resolved ATR-IR measurements distinguish four regimes rather than the two predicted by theory in the absence of segmental physisorption. The …
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New Double-Responsive Micelles of Block Copolymers Based on N,N-Diethylacrylamide: Synthesis, Kinetics, Micellization, and Application as Emulsion Stabilizers
… this synthetic concept and using poly(tert-butyl acrylate)-Li, and poly(tert-butyl methacrylate)-Li as macroinitiators, well-defined poly(tert-butyl acrylate)-block-PDEAAm, and poly(tert-butyl methacrylate)-block-PDEAAm block copolymers were obtained. Although the blocking efficiencies …
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Tailoring Structure and Function of Imidazole-Containing Block Copolymers for Emerging Applications from Gene Delivery to Electromechanical Devices
… free radical copolymerizations with methyl methacrylate (MMA) and n-butyl acrylate (nBA) afforded homopolymers and copolymers with tunable solution and thermal properties. Aqueous SEC provided reproducible and reliable molecular weights for poly(1-VIm) in the absence of polymer aggregates. …
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Exploring Multiple Hydrogen Bonding and Ionic Bonding in the Design of Supramolecular Polymers
… elastomers (TPEs) with a low Tg poly (n-butyl acrylate) central block and a high Tg external charged blocks. Strong ionic interactions between doubly-charged units drove molecular self-assembly to form densely packed, hierarchical microstructures, which contributed to a robust, …
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Smart organic-inorganic nanohybrids of functionalized silsesquioxane nanoparticles
… amphiphilic block copolymer micelles of poly(n-butyl acrylate)-block-poly(acrylic acid) and star-shaped poly(acrylic acid)s, the latter serving as a model system for frozen micelles. In all cases the mixing of aqueous solutions of anionic block copolymer micelles or the anionic stars with …
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Synthesis and Characterization of Zwitterion-Containing Acrylic (Block) Copolymers for Emerging Electroactive and Biomedical Applications
Conventional free radical polymerization of n-butyl acrylate with 3-[[2-(methacryloyloxy)ethyl](dimethyl)-ammonio]-1-propanesulfonate (SBMA) and 2-[butyl(dimethyl)amino]ethyl methacrylate methanesulfonate (BDMAEMA MS), respectively, yielded zwitterionomers and cationomers of comparable chemical …