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 12 of 12 for “"poly(2-vinylpyridine)"”.
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Electrically Conductive Low Dimensional Nanostructures: Synthesis, Characterisation and Application
… of various nanoobjects including single polymer molecules and carbon nanotubes constitutes a very promising alternative for fabrication of ultimately small devices. Carbon nanotubes are attractive materials for nanotechnology and hold much promise to revolutionize fundamental science in a …
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"Smart" Hydrogels based on Trishydrophilic Triblock Terpolymers
… stimuli-responsive, trishydrophilic triblock terpolymers and their utilization for the construction of “smart” hydrogel systems, responding to a variety of external stimuli. The central focus was put on ABC triblock terpolymers composed of a pH-sensitive A block, a water soluble B block and a …
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Bio-inspired optical components
… tunable multilayer reflectors made from block copolymers and improvements to liquid filled lenses which mimic the human eye.In this thesis a poly(styrene)-poly(2-vinylpyridine) block copolymer was used to create a bio-mimetic, one-dimensional, multilayer reflector. The wavelengths of light …
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Determining the role of charges in ionic polymer blend systems
… about the effect of charge in ionic multi-polymeric systems. Theory has shown that many charged systems have unusual phase diagrams that are asymmetric. Such a phenomenon would be ideal for tuning domain sizes or obtaining nontraditional structures in materials. One of the two studies …
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Tuning The Properties Of Soft Materials Through Extreme Nanoconfinement
Polymers and small molecules under nanoconfinement can show significantly deviated properties from bulk. While the effect of nanoconfinement has been studied for several decades, the origin of the deviation is yet to be investigated and different people can observe very different effects in similar …
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Understanding the effect of protonation on the self-assembly of a model polyelectrolyte-neutral block copolymer
Charge-containing polymers are used in a wide variety of commercial products including fuel cell membranes, heat sealing packages, and golf ball covers. Traditionally made as random copolymers of charged and uncharged monomers, morphological understanding and control is limited due to the lack of …
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Fabrication of Polymersomes using Microfluidic Devices
The fabrication of diblock copolymer vesicles, so-called polymersomes, from poly(2-vinylpyridine)-block-poly(ethylene glycol) (P2VP-b-PEG) and poly(ethylene glycol)-block-poly(lactid acid) (PEG-b-PLA) by means of microfluidics is described. The experiments were performed in microfluidic devices …
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Soft Compartmentalized Polymer Colloids: Janus Particles, Multicompartment Structures, Inorganic-Organic Hybrids and Applications
Compartmentalized polymer-based colloids with nanoscopic dimensions and different topologies were prepared based on various block copolymer architectures. The polymers were prepared via anionic polymerization or a controlled radical polymerization technique (RAFT). Self-assembly both in solution …
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Synthesis and Self-Assembly of Novel ABC Miktoarm Star Terpolymers
A novel synthesis for ABC miktoarm star terpolymers and their self-assembly into complex superstructures in aqueous solution are described within this thesis. To this aim a modular route for such materials was developed, combining anionic polymerization and copper-catalyzed azide-alkyne …
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Complex nanostructures in triblock terpolymer thin films
The thin film phase behavior of poly(styrene)-block-poly(2-vinylpyridine)-block-poly(tert-butyl methacrylate) (PS-b-P2VP-b-PtBMA) triblock terpolymers with volume fractions f(PS) : f(P2VP) : f(PtBMA) = 1 : 1.2 : x, with x ranging from 3.05 to 4, is studied with a combinatorial gradient approach. …
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Microvascular materials for adaptive electronic structures
… properties of 11 aqueous solutions of conductive polymers and suspensions of conductive particles are characterized at frequencies ranging from 50 MHz to 12 GHz. High dielectric permittivities and loss tangents are observed for most fluids tested, with concentrated suspensions of carbon nanotubes …
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Development of drug delivery composite systems based on stimuli responsive segmented polymers
… Καταρχην ενα βιοσυμβατο, διττα pH-ελεγχομενο poly(2-vinyl pyridine)-b-poly(acrylic acid)-b-poly(n-butylmethacrylate) (P2VP-PAA-PnBMA) triblock terpolymer μελετηθηκε ως ενας ενεσιμος πηκτωματοποιητης. Αυτο το τριπολυμερες εμφανιζει μια αποτομη pH-επαγομενη μεταβαση φασεων σε τιμες πανω απο 5 …