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Showing 1 to 20 of 101 for “"chain transfer"”.

  1. I. Chain Transfer Constants of Vinyl Esters. Ii. Alkyl Dithioacrylates

    Thompson, Clifford FrancisUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-05T19:36:57Z (GMT). No. of bitstreams: 1 5805503.pdf: 3613067 bytes, checksum: 0b880aeaa3eb5f4c6761b0924d159d53 (MD5) Previous issue date: 1958

    uiuc Repository record

  2. Investigation Of Parameters Enabling Admicellar Reversible Addition-Fragmentation Chain Transfer (Raft) Polymerization

    Cheah, Poh Lee2019

    … early termination and increases the rate of dead chain formation. Admicellar polymerizations using the water-soluble initiator exhibited higher Mw polymer compared to the systems using the water-insoluble initiator due to less degree of partitioning of water-soluble initiator in the admicelle …

    mississippi Repository record

  3. Hierarchical self-assembly of nanoparticles using reversible addition-fragmentation chain-transfer block copolymers

    Burns, Fraser2018

    The hierarchical self-assembly of cadmium based quantum dots through the use of RAFT block copolymers have been investigated. The formation of cadmium selenide quantum dots within the core of tetrablock RAFT copolymers in three different solvents, dioxane, THF and DMF was investigated …

    uvic Repository record

  4. Synthesis and Characterization of Graphene-Polymer Nanocomposites via Reversible Addition-Fragmentation Chain-Transfer Polymerization

    Gu, RenpengThe University of Western Ontario2012

    … to develop a facile approach for growing polymer chains from the surface of graphene sheets via reversible addition-fragmentation chain-transfer (RAFT) polymerization. Graphene oxide was synthesized by reacting graphite with potassium permanganate and concentrated sulfuric acid. The oxidation and …

    uwo Repository record

  5. Novel Precursors for Polymer-Protein-Conjugate Synthesis via Reversible Addition-Fragmentation Chain Transfer Polymerization

    Schilli, Christine MariaUniversität Bayreuth

    … of N-isopropylacrylamide with two different chain transfer agents, namely benzyl 1-pyrrolecarbodithioate and cumyl 1-pyrrolecarbodithioate, yielded polymers with narrow molecular weight distributions as well as Mn values that were in good agreement with the calculated ones. A comparison …

    bayreuth Repository record

  6. Coordinative Chain-Transfer Polymerization of Ethylene with NCN-Ligand Stabilized Complexes of Titanium and Zirconium

    Obenauf, JohannesUniversität Bayreuth

    … catalyst systems were tested in coordinative chain-transfer polymerization (CCTP) of ethylene. It includes optimization of the reaction conditions, assignment of mechanistic aspects concerning individual polymerization ability and detailed analysis of the resulting poly- or oligomeric products.

    bayreuth Repository record

  7. Overcoming Challenges in Reversible Addition–Fragmentation Chain Transfer Polymerization using Photoinduced Electron/Energy Transfer Catalysis

    Baker, Jared GalenVirginia Tech2026

    … limitations in reversible addition–fragmentation chain transfer (RAFT) polymerization. Both methods employ photoinduced electron/energy transfer (PET) catalysis to generate radicals within the polymerization system. PET catalysis was selected as the initiation pathway because the rate of radical …

    vt Repository record

  8. The synthesis of well-defined functional homo- and block copolymers in aqueous media via Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization

    Mertoglu, MuratUniversität Potsdam

    New chain transfer agents based on dithiobenzoate and trithiocarbonate for free radical polymerization via Reversible Addition-Fragmentation chain Transfer (RAFT) were synthesized. The new compounds bear permanently hydrophilic sulfonate moieties which provide solubility in water independent of the …

    potsdam-diss Repository record

  9. Adsorption behaviour of molecularly imprinted-beta-cyclodextrin polymers prepared by reversible addition-fragmentation chain transfer (RAFT) polymerization for selective recognition of benzylparaben

    Asman, SalizaUniversiti Malaya2015

    … essential of reversible addition�fragmentation chain transfer (RAFT) polymerization process were studied to generate potential MIPs. The study focuses on the characterization and adsorption behaviour of MIPs for selective recognition of benzylparaben (BzP) analyte. The potential of β-CD in MIP …

    uthm Repository record

  10. Copolymerizing Acrylonitrile and Methyl Acrylate by RAFT for Melt Processing Applications: A Synthetic Investigation of the Effects of Chain Transfer Agent, Initiator, Temperature, and Solvent

    Beck, Susan AshleyVirginia Tech2014

    … using reversible addition-fragmentation chain transfer (RAFT) copolymerization. A typical copolymer was charged with 15 wt. % MA content. This thesis describes a systematic variation of the RAFT copolymerization variables to optimize this system. In particular, the effects of chain …

    vt Repository record

  11. Controlling the end groups and rates of catalytic polymerization

    Hyatt, Michael GeorgeUniversity of Illinois at Urbana-Champaign2020

    … synthesized through multiple methods including chain transfer polymerization. Chain transfer polymerization involves a catalyst that is capable of polymerizing a monomer, reacting with a chain transfer agent to cleave the polymer chain from the catalyst, and reinitiate the growth of a new …

    uiuc Repository record

  12. Developing green processes for the conversion of biobased materials into pyrones

    Bradley, William2019

    … with reversible addition fragmentation chain transfer RAFT polymerization by the development of macro-chain transfer agent. The conversion of anionic polystyrene to block acrylic copolymers had an efficiency as high as 97%. This was completed by coupling -bromoisobutryl bromide, …

    iastate Repository record

  13. Stereochemical Effect of RAFT Agents on Kinetics of Reversible Deactivation Radical Polymerization

    Lin, ShiyangUNSW, Sydney2020

    The propagation polymer chains in RDRP can be isolated in the dormant form and be re-activated at chain ends to generate propagating radicals, which initiate subsequent chain extensions. Since the effect of remote substituents on kinetics decreases rapidly with their distance from the reaction site …

    unsw Repository record

  14. Synthesis, Characterization, Processing and Physical Behavior of Melt-Processible Acrylonitrile Co- and Terpolymers for Carbon Fibers: Effect of Synthetic Variables on Copolymer Synthesis

    Johnson, Harry DaleVirginia Tech2006

    … the system. In particular, the effects of chain transfer agent, initiator, and surfactant concentration on the polymer properties were studied.

    vt Repository record

  15. Thermoresponsive Glycopolymers via Controlled Radical Polymerization (RAFT) for Biomolecular Recognition

    Özyürek, ZeynepTechnische Universität Dresden

    … with NIPAM. NIPAM homopolymers with an active chain transfer unit at the chain end could be prepared by RAFT. They were used as macro-chain transfer agents to prepare a variety of sugar containing responsive block copolymers from new glycomonomers by the monomer addition concept. The LCSTs of …

    qucosa-diss

  16. Synthesis and Characterization of Zwitterion-Containing Acrylic (Block) Copolymers for Emerging Electroactive and Biomedical Applications

    Wu, TianyuVirginia Tech2012

    … compositions. Reversible addition-fragmentation chain transfer polymerization (RAFT) strategy afforded the synthesis of well-defined poly(sty-b-nBA-b-sty). 2-(Dimethylamino)ethyl acrylate (DMAEA), a tertiary amine-containing acrylic monomer, exhibited radical chain transfer tendency toward …

    vt Repository record

  17. Control of Network Topology in Photopolymer Networks for Additive Manufacturing

    Qin, KeMassachusetts Institute of Technology2022

    … polymerization via addition-fragmentation chain transfer (AFCT) and reversible addition-fragmentation chain transfer (RAFT), and their applications in photopolymer networks to improve material properties and introduce novel functional materials to additive manufacturing. Chapter 2. In this …

    mit Repository record

  18. STRUCTURE DETERMINATION, BIOCHEMICAL CHARACTERIZATION, AND PROTEIN ENGINEERING OF THE ACYL CARRIER PROTEIN DOMAIN FROM 6-DEOXYERYTHRONOLIDE B SYNTHASE

    WANG ZILONG2017

    … acyl carrier protein (ACP). ACPs are involved in chain transfer and chain elongation during polyketide biosynthesis. Structural characterization of all seven ACPs could lead to a better understanding of the domain-domain interaction and the mechanism of action of the DEBS complex. Some polyketide …

    nus Repository record

  19. Synthesis and study of the micellization behavior of a dual temperature- and pH-responsive PAA-b-PNIPAM block copolymer

    Zarshenas Moghadam, Ehsan2020

    … diblock copolymers with different relative chain lengths of the hydrophobic and hydrophilic blocks were synthesized by reversible addition fragmentation chain transfer polymerization. The preliminary results showed high conversion values for all products. Proton nuclear magnetic resonance …

    emich Repository record

  20. Synthesis and Characterization of Cation-Containing and Hydrogen Bonding Supramolecular Polymers

    Cheng, ShijingVirginia Tech2011

    … (NMP) and reversible addition-fragmentation chain transfer polymerization (RAFT). Non-covalent interactions were expected to increase the effective molecular weight of the polymeric precursors through intermolecular associations and to induce microphase separation. The influence of …

    vt Repository record

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