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Showing 1 to 20 of 35 for “"Controlled Radical Polymerization"”.
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Controlled Radical Polymerization: Towards Industrially Relevant Conditions
Reversible deactivation radical polymerization (RDRP), also known as controlled radical polymerization (CRP), has been a significant area of polymer research for more than 20 years, allowing the facile synthesis of complex macromolecules previously unattainable by conventional free radical …
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Synthesis and controlled radical polymerization of multifunctional monomers
… and different protective groups were used. After polymerization the protective groups were removed by different methods. Various initiators for the NMP of the monomers were synthesized and the reaction conditions were optimized. The results showed that NMP was not a suitable method for …
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Semiconductor Polymer Architectures using Click Chemistry and Controlled Radical Polymerization
Diese Dissertation beschäftigt sich mit der Synthese und Charakterisierung von halbleitenden Seitenkettenpolymeren und –blockcopolymeren für die Anwendung in organischen Photovoltaik-Bauelementen. Besonderer Augenmerk liegt dabei auf der Entwicklung und der Anwendung von modernen Synthesetechniken …
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Thermoresponsive Glycopolymers via Controlled Radical Polymerization (RAFT) for Biomolecular Recognition
Stimuli responsive polymers (SRP) have attracted a lot of attention, due to their potential and promising applications in many fields, as protein-ligand recognition, on-off switches for modulated drug delivery or artificial organs. Poly(N-isopropylacrylamide) (PNIPAM) is one of the most widely …
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Surface Modification of Nanoparticles Using Controlled Radical Polymerization For Designed Interfaces
<p> This research focuses on using controlled polymerization techniques such as Radical Addition Fragmentation Chain Transfer Polymerization (RAFT) to graft polymers from the surface of colloidal silica nanoparticles for incorporation in polymers to make composites. </p> <p>In the first part of …
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Novel Routes for the Design of Poly((meth)acrylic acid) Containing Polymer Structures by Controlled Radical Polymerization
… for existing P(M)AA-containing polymers. Controlled radical polymerization techniques such as RAFT and ATRP were used to synthesize well-defined poly(1-ethoxyethyl(meth)acrylate) (PEE(M)A). This was demonstrated by kinetic data, control of molecular weight and the presence of a narrow …
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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 …
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Well-defined molecular brushes: Synthesis by a "grafting through" strategy and self assembly into complicated hierarchical nanostructures
… is achieved by combining orthogonal living polymerization techniques rationally, such as living/controlled radical polymerization, ring opening polymerization and ring opening metathesis polymerization. Generally, the strategy can be divided into two steps: the first step involves the …
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From N to P: Examining Structure-Property Relationships of Ammonium- and Phosphonium-Containing Macromolecules
… macromolecular properties. Conventional free radical polymerization readily generated a large library of ammonium- and phosphonium-containing polyelectrolytes. Along with the two different cationic atoms, the alkyl substituent lengths and counterions were varied to generate a thorough …
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Raft Polymerization Of Ph-Responsive, Diblock Copolymers For Nucleic Acid Delivery Vehicles
… high transfection efficiency. With the advent of controlled radical polymerization (CRP) and more specifically reversible addition-fragmentation chain transfer (RAFT) polymerization, it is now possible to develop well-defined polymers with predicted molecular weights and architectures. The work …
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Polyethylene-based Polar Block Copolymers Preparation using Organometallic-Mediated Radical Polymerization
… The difference in reactivity required several polymerization techniques. The Co(salen) offers reactivities in mediating the polymerization of various monomers. This study addressed these challenges by employing polymer-Co(salen) complexes and conducting the synthesis of several …
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Size and chemistry selective membranes from block polymer templates
… this dossier, we detail the efforts into the controlled radical polymerization of polyisoprene-<em>b</em>-polystyrene-<em>b</em>-poly(<em> N,N</em>-dimethylacrylamide) (PI-PS-PDMA) via. a facile reversible addition-fragmentation chain transfer (RAFT) mechanism. For this high molecular weight …
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Synthesis and Polymerization of Substituted Stilbenes with Maleic Anhydride for Membrane Solubilization and Protein Extraction
… stilbene and maleic anhydride copolymers with controlled sequences and compositions demonstrated membrane solubilization and protein isolation activity at levels comparable to SMA2000, with several advantages that include an increase in the useable pH range and the size and homogeneity of …
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Non-Covalent Interactions in Block Copolymers Synthesized via Living Polymerization Techniques
… end-functional polymers synthesized via living polymerization techniques such as nitroxide mediated polymerization and anionic polymerization. The influence of non-covalent association on the structure/property relationships of these materials were studied in terms of physical properties …
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Linear and Cross-linked UCST-Type Polymers : Synthesis and Properties
… the challenges in the UCST field. Additionally, controlled radical polymerization methods were introduced as effective technique for synthesizing polymers with linear structures. Gold nanoparticles protected by thermoresponsive polymers were reviewed. The Synopsis introduces the main results of …
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Bio-inspired Design and Self-Assembly of Nucleobase- and Ion-Containing Polymers
… synthesis of supramolecular polymers using free radical polymerization and controlled radical polymerization techniques. Comprehensive investigations for the structure-property-morphology relationships of these supramolecular polymers elucidated the effect of noncovalent interactions on polymer …
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Towards understanding RAFT aqueous heterophase polymerization
… technique for studying the aqueous heterophase polymerization. The polymerization rates obtained by calorimetric investigation of ab initio emulsion polymerization of styrene revealed the strong influence of the type and combination of the RAFT agent and initiator on the polymerization rate and …
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Synthesis of Bottlebrush Polymers Using the Grafting-Through and Transfer-To Methods
… on the kinetics of ring-opening metathesis polymerization (ROMP) of macromonomers (MMs) initiated by Grubbs 3rd generation catalyst. A variance in the rate of propagation of >4-fold between similar MMs with different anchor groups was observed. This phenomenon was conserved across all MMs …
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