نتایج جستجو برای: Cationic vinyl monomer
تعداد نتایج: 49771 فیلتر نتایج به سال:
grafting polymerization was a valuable method for the modification of the chemical and physical properties of polymer surfaces. in this paper, the grafting of cationic vinyl monomer with quaternary ammonium groups, methacryloxyethyltrimethyl ammonium chloride (dmc), onto the isotactic polypropylene (ipp) granule was performed by suspension solid-state grafting process. the technique offers new ...
Alternating cationic copolymerization of 2-chloroethyl vinyl ether and cyclic trimers one monomer two aldehyde molecules were investigated to obtain polymers with ABCC-type sequences.
poly(vinyl acetate) is synthesized via solution polymerization, and then it is converted to poly(vinyl alcohol) by alkaline alcoholysis. the aim of the work study was to investigate statistically the influence of reaction variables in vinyl acetate polymerization, the conversion of this monomer to polymer, degree of branching of acetyl group in poly(vinyl acetate), as well as the molecular wei...
Grafting polymerization was a valuable method for the modification of the chemical and physical properties of polymer surfaces. In this paper, the grafting of cationic vinyl monomer with quaternary ammonium groups, methacryloxyethyltrimethyl ammonium chloride (DMC), onto the isotactic polypropylene (iPP) granule was performed by suspension solid-state grafting process. The techniqu...
Vinyl chloride, the monomer of polyvinyl is produced primarily via acetylene hydrochlorination catalyzed by environmentally toxic carbon-supported HgCl2. Recently, nitrogen-doped carbon materials have been explored as metal-free catalysts to substitute Herein, we describe development a cationic covalent triazine network (cCTN, cCTN-700) that selectively catalyzes hydrochlorination. cCTN-700 exh...
This research paper deals with the in vacuo synthesis of pHand temperaturesensitive hydrogels of xanthan gum with different vinyl monomer mixtures such as acrylamide-co-acrylic acid (AAm-co-AA), acrylamide-co-acrylonitrile (AAmco-AN), and acrylamide-co-methacrylic acid (AAm-co-MAA), keeping acrylamide as the principal monomer. Different optimised reaction parameters for the graft copolymerisati...
water soluble amphoteric graft copolymers of polysaccharide were synthesized via grafting of cationic monomer onto the sodium carboxymethylcellulose ()cmc)( and then used as a shale stabilizer in the water-based drilling fluids. accordingly, five types of cmc-graft copolymers with different ratios of acrylamide am)( and diallyldimethylammonium chloride dadmac)( were synthesized. grafting of mon...
Vinyl ether (VE) was long believed to be among the monomers that could not radically homopolymerized. Therefore, synthesize block copolymers with versatile polymerizable monomers, efficient transformation reactions were necessary between living cationic and controlled radical polymerizations. Under such circumstances, some groundbreaking polymerizations have been discovered. One reaction, a met...
Vinyl functionalized poly (ε-caprolactone) with molar mass ranging from 500–5000 Da were synthesized by ring opening polymerization and further photopolymerized. One-step synthesis and functionalization is achieved based on ring opening polymerization (ROP). Hydroxyl butyl vinyl ether (HBVE) was employed to play the role as the initiator of ROP, and photo-curable functional group. The presence ...
This work reports the design and synthesis of amino acid-based hyperbranched polymers via the combination of self-condensing vinyl polymerization (SCVP) and reversible addition–fragmentation chain transfer (RAFT) polymerization from tert-butyl carbamate (Boc)-L-valine acryloyloxyethyl ester (Boc-Val-HEA) and S-(4-vinyl)benzyl S’-butyltrithiocarbonate (VBBT) with variable degrees of branching (D...
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