2 edition of Synthesis of novel block copolymer dispersants for water-borne pigments found in the catalog.
Synthesis of novel block copolymer dispersants for water-borne pigments
Written in English
|Series||Sussex theses ; S 5715|
|The Physical Object|
|Pagination||xx, 201 leaves ;|
|Number of Pages||201|
Block Copolymer Synthesis by a Nitroxide-Mediated Living Free Radical Polymerization Process Michael K. Georges *, Gordon K. Hamer *, and Nancy A. Listigovers Xerox Research Centre of Canada, Speakman Drive, Mississauga, Ontario, Canada L5K 2L1. Block copolymer formation was confirmed by 1H NMR and GPC measurements. On the basis of the H NMR investigation, there is strong evidence for the presence of TEMPO-terminated copolymers. The TEMPO-mediated polymerization is suitable for the synthesis of polystyrene-polymethacrylate diblock copolymers from vinyl monomers. Introduction.
The diblock copolymer PTPA-b-PS consisting of poly(4-butyltripheneylamine) (PTPA) and polystyrene was prepared by atom transfer radical polymerization followed by C–N coupling polymerization. Three types of block copolymers with different contents of polystyrene segment were prepared. The formation of block copolymer was confirmed by 1H NMR spectra and gel . and synthesis of a novel Donor-Bridge-Acceptor (D-B-A) block copolymer system for potential high efficient organic opto-electronic applications. Specifically, the donor block contains an electron donating alkyloxy derivatized polyphenylenevinylene (PPV), the acceptor block contains an electron withdrawing alkyl-sulfone derivatized.
A novel diblock copolymer with a hydrophobic supramolecular polymer block and a hydrophilic traditional polymer block has been prepared. Control over the chain length ratio of the two blocks is obtained by simply changing the concentration proportion of the monomer of the supramolecular polymer block to the traditional polymer block in solution. Block copolymers contain long contiguous blocks of two or more repeating units in the same polymer chain. Covering one of the hottest topics in polymer chemistry, Block Copolymers provides a coherent overview of the synthetic routes, physical properties, and applications of block copolymers.
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Tions.[25,26] Jagtap et al. synthesized a block copolymer by reversible addition-fragmentation chain transfer polym - erization; the copolymer was used as a wetting and dis-persing agent and an emulsifier.[27,28] Hence, controlled radical polymerization is the efficient tool for the develop - ment of polymeric pigment dispersants mainly for organic.
Synthesis of novel block copolymer dispersants for water-borne pigments Author: Bories-Azeau, Xavier ISNI: X Awarding Body: University of Sussex Current Institution: University of Sussex Date of Award: Availability of Full Text.
Block Copolymer Templates for Pattern Transfer Applications, Dimensional Scalability and Fine-Tunability Down to Sub nm Length Scales, Directing Self-Assembly of Block Copolymers, Block Copolymers for Directed Nanoscale Synthesis and Self-Assembly, High Resolution Nanolithography, Author: Anbanandam Parthiban.
A series of chains of triblock amphiphilic copolymers were synthesized by atom transfer radical polymerization (ATRP) techniques and post modified to polymeric dispersant for waterborne paint. In this paper, a novel reverse demulsifier was prepared by copolymerization of block polyether macromonomer (PEP) and diallyldimethylammonium chloride (DM).
Its synthesis condition was optimized by using three indexes including product stability, the effect on dehydration of water/crude oil emulsion and oil removal of crude oil/water by: 3. Functionalization-Induced Self-Assembly of Block Copolymers for Nanoparticle Synthesis.
ACS Macro Letters7 (12), DOI: /acsmacrolett.8b Hui-Jun Zhou, Guan-Wen Yang, Yao-Yao Zhang, Zhi-Kang Xu, Guang-Peng Wu. Bioinspired Block Copolymer for Mineralized Nanoporous Membrane. The discovery of reversible-deactivation radical polymerization (RDRP) has provided an avenue for the synthesis of a vast array of polymers with a rich variety of functionality and architecture.
The preparation of block copolymers has received significant focus in this burgeoning research field, due to their. the synthesis of acrylic copolymers with very well defined structures.
Based on the NOR-technology, novel AB-type block copolymer dispersants have been developed for different solvent-based paint applications. Key parameters for the optimization of dispersant performance are the selection of the steric stabilizer chain and the type of anchoring groups.
Structural optimisation of ABA triblock copolymer dispersants ABA triblock copolymer is an extension from the AB diblock structure, where the main difference is the extra anchoring chain (A block) attached to the AB type stabilising chain's free-end (B block) (see Scheme 1).This structure allows the ABA type to form two possible adsorption conformations: when the two.
Novel block copolymers based on 2-vinylpyridine (2VP) and ε-caprolactone (CL) have been synthesized via sequential anionic polymerization in tetrahydrofuran (THF). The copolymers with and without crosslinking were then neutralized with sodium hydroxide to prepare polymeric dispersants DFCD1 and DFCD2 respectively in aqueous medium.
It was observed via surface-tension measurement that both DFCD1 and DFCD2 transfer to the air–water interface before forming any aggregates, and the ease of forming the. Synthesis of zwitterionic diblock copolymers by esterification of a hydroxy-functional diblock copolymer precursor using SBA.
Only the major isomer of HPMA monomer is shown for clarity. Each reaction step was carried out at 20 °C. Kinetic studies indicated differing rates of reaction for the three homopolymers.
In current study, we report the synthesis and characterization of renewable fatty acid-based block copolymer. The block copolymer was synthesized via RAFT polymerization.
Block Copolymer Chemistry vwa T+ Scroll from left to right to see all information. Block Copolymer Chemistry – High Molecular Weight Dispersants. A poly (n-butyl acrylate)-b- (2-dimethylaminoethyl acrylate) block copolymer dispersant was prepared by ATRP and then quaternized to form a pigment stabilizer useful for preparing coating.
Acrylic Pigment Dispersants made by Group Transfer Polymerization Abstract A pigment dispersant comprising an AB block copolymer preferably of polymethyl methacrylate and glycidyl methacrylate made by group transfer polymerization, reacted with polar groups, preferably 4nitrobenzoic said.
Synthesis of new amphiphilic block copolymers to disperse TiO 2 particles in water. Moreover, water-borne paints containing polymeric dispersants of PAA b-P4VP 57, et ing pigment dispersing in powder coatings with block copolymer dispersants. Coat. Technol., 72 () (), pp. Block copolymers (BCPs) are a specific class of copolymers, in which the chemically distinct monomer units are grouped in discrete blocks along the polymer chain .Figure 1 illustrates a few of the many architectures of BCPs, which can be configured into linear, branched (graft and star), and cyclic molecular architectures.
Thanks to the advancement of polymer synthetic strategies. A pigment dispersant comprising an AB block copolymer preferably of polymethyl methacrylate and glycidyl methacrylate made by group transfer polymerization, reacted with polar groups, preferably 4-nitrobenzoic acid.
The present invention pertains to salt modified copolymers wherein one of the monomer units contains a quaternized N-atom structure with a polar substituent. The invention further relates to the use of said copolymers as dispersant especially for color filters.
The copolymer is made by controlled polymerisation or by conventional polymerization and comprises at least one. block copolymers, self-assembled supramolecular structures that exhibit stimuli or environmentally responsive properties can be obtained [1, 2].
Hence, the interest in the synthesis and characterization of these families of novel block copolymers has increased enormously in the recent years.Method and apparatus for producing synthesis gas from waste materials WOA2 (en) Rhodia Inc.
Hydrophilized substrate and method for hydrophilizing a hydrophobic surface of a substrate EST3 (en) * Lubrizol Limited: Novel Dispersants. 1. Introduction. Dispersants increase the stability of a suspension of particles in a liquid medium by deflocculation of the primary particles. For decades, they have been used in various industries such as textiles, inkjet printing, transportation, electronics, and biomedical applications [,, ].Dispersant molecules are amphiphilic; that is, their structures include both .