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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 20 of 51 for “"Polymer Brushes"”.
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Nanorheology of Polymer Brushes
Systematic comparison was also made between polymer brushes, polymer mushrooms and adsorbed homo-polymers.
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Polymer Brushes for Molecular Transport
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005.
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Immobilization of Inorganic Nanoparticles on Responsive Polymer Brushes
Exploitation of well defined responsive polymer brushes for direct and controlled immobilization of metal/semiconductor nanoparticles on macroscopic surfaces has been demonstrated. The employed approach offers the possibility of the organization of a variety of inorganic nanoparticles by …
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One-dimensional hybrid nanomaterials based on cylindrical polymer brushes
Cylindrical polymer brushes (CPBs) have been synthesized via the combination of anionic polymerization (for the backbone) and atom transfer radical polymerization (for the side chains) via the "grafting from" technique to achieve a narrow molecular weight distribution in both the backbone and the …
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Functional Cylindrical Polymer Brushes and Their Hybrids with Inorganic Nanoparticles
Various cylindrical polymer brushes were synthesized via a grafting-from strategy. Very long poly(2-hydroxylethyl methacrylate) backbones of the brushes were prepared by anionic polymerization (DPn=1500), esterified with an ATRP initiator, and subsequently the side-chains were grafted by atom …
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Switching of surface composition and morphology of binary polymer brushes
… of surface composition and morphology of binary polymer brushes in response to changes in solvent selectivity, heating above glass transition temperatures, and contact with a rubbery stamp was studied. The binary brushes: polystyrene/poly(2-vinyl pyridine) (PS/P2VP), …
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Directed Phase Separation of Polymer Blends on Binary-Patterned Polymer Brushes
Self-assembly of well-defined polymer microstructures is of interest for applications such as polymer solar cells, light emitting diodes, microelectronics and biosensors. Chemically patterned substrates can direct the phase separation of thin films of polymer blends, producing controlled …
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Template-Directed Synthesis of One-Dimensional Hybrid Nanostructures from Cylindrical Polymer Brushes
The thesis deals with the study of cylindrical polymer brushes (CPBs) and their use in template chemistry. Herein, we developed template-directed syntheses of one-dimensional (1D) hybrid nanostructures in which CPBs served as 1D soft templates. So called ‘molecular’ core-shell or core-shell-corona …
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Grafting polymers on nanosheets : a route for the fabrication of freestanding polymer brushes
… of freestanding homogenous and patterned polymer brushes is of great interest for both scientific studies and industrial applications. These materials may find a broad range of applications in many surface-based technologies. We developed a new strategy in preparing freestanding homogenous …
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Design, Synthesis and Application of Cylindrical Polymer Brushes: From Nanostructures to Advanced Materials
… design, synthesis and application of cylindrical polymer brushes (CPBs). Herein, we investigated the scission behavior of polyelectrolyte CPBs on different surfaces, developed novel synthetic pathways for well-defined CPBs via reversible addition-fragmentation chain transfer (RAFT) polymerization, …
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Nanoscale Investigation of Adhesion, Friction, and Wear in Chemically Heterogeneous Responsive Polymer Brushes
Polymer brushes provide the responsive smart surfaces which can be used for fabrication of various devices. In this thesis work, adhesion, friction, and wear of polystyrene (PS) - poly(2-vinyl pyridine) (P2VP) and polystyrene - poly(acrylic acid) (PAA) binary brushes and corresponding monobrushes …
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Template-Controlled Synthesis of Magnetic/Semiconducting Nanoparticles within Amphiphilic Core-Shell Cylindrical Polymer Brushes
Core-shell 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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Conjugated Polymer Brushes (Poly(3-hexylthiophene) brushes): new electro- and photo-active molecular architectures
… the main methods for the synthesis of conjugated polymers for their suitability in the preparation of conductive polymer brushes. The main focus was put on the grafting of intrinsically soluble substituted regioregular polyalkylthiophenes because of their excellent optoelectronic properties. The …
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The confined self-assembly of photonic pigments: from synthetic polymer brushes to sustainable cellulosic colloids
… The second system exploits bottlebrush block copolymers (BBCPs). These rigid, giant macromolecules are well-known for microphase separation into a wide variety of nanostructures. Although more challenging to synthesise, BBCPs allow for a very rapid self-assembly process. All previous studies …
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Nanoscale Hydrogel Films and Polymer Brushes Grafted Onto Nanocapillary Array Membranes for Externally Controllable Size -Selective Molecular Transport
… NCAMs. Molecular transport through the PNIPAAm polymer brush-modified NCAMs was investigated by real-time fluorescence measurements using fluorescein isothiocyanate (FITC) labeled dextrans.
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DEVELOPMENT AND OPTMIZATION OF POLYELECTROLYTE POLYMER BRUSHES FOR THE FRACTIONATION OF PEPTIDE AND PROTEIN MIXTURES PRIOR TO MALDI MASS SPECTROMETRY ANALYSIS
… is the synthesis, development and application of polymer brushes for the fractionation of complex mixtures of peptides and digested proteins prior to MALDI-MS analysis. Even though MALDI-MS analysis is increasingly used in proteomic applications, this method of analysis suffers loss of performance …
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Functional surface-initiated polymers: Device applications and polymerization techniques
Self-assembled monolayers and surface-initiated polymer, or polymer brushes, have attracted attention as they form dense layers with much higher structural order than bulk or solution polymers. Another field of research which has emerged over the last two decades is the field of organic and polymer …
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Smart magnetic affinity adsorbents
… this work, modification of M-PVA supports with polymer brushes of dual properties has been explored for their intended use in bioseparation technology, i.e. for both selectively protein binding and enhanced temperature elution of especially difficult to elute species such as haemoglobin. …
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DEVELOPMENT OF IONIC POLYMER NANOBRUSHES WITH APPLICATION IN MALDI-MS
… in the development and application of responsive polymer nanobrushes. Mainly, preparation of the polymer nanobrushes will center on the development of so called mixed polymer brushes composed of the ionic and neutral monomers. Such mixed polymer brushes have a range of applications and uses, and …
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Ring-opening Metathesis Polymerization for the Creation of Responsive Colloids and Surfaces
Ring-opening metathesis polymerization (ROMP) is a well-controlled living polymerization method and has been widely used to synthesize various polymer materials. This thesis investigates the use of ROMP in the creation of responsive materials, including photonic polymer colloids and …
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