A facile synthesis of branched graft copolymers via combination of RAFT self-condensing vinyl polymerization and aldehyde–aminooxy reaction

2015 ◽  
Vol 6 (21) ◽  
pp. 4020-4029 ◽  
Author(s):  
Jianbing Huang ◽  
Lvhuan Lin ◽  
Hui Liang ◽  
Jiang Lu
Keyword(s):  
Graft Copolymer ◽  
Graft Copolymers ◽  
Synthetic Route ◽  
Facile Synthesis ◽  
Vinyl Polymerization ◽  
Branched Graft

A facile synthetic route to the branched graft copolymer BPDEM-g-PEO has been developed by combination of the RAFT-SCVP technique and aldehyde–aminooxy reaction.

Synthesis and characterization of amphiphilic graft copolymers with hydrophobic poly(α-methylstyrene) backbone and hydrophilic poly(n-vinylpyrrolidone) side chains

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Fatima Zohra Sebba ◽  
Seghier Ould Kada ◽  
Mohamed Benaicha ◽  
Nerjesse Nemiche
Keyword(s):  
Graft Copolymer ◽  
Graft Copolymers ◽  
Radical Copolymerization ◽  
Side Chains ◽  
Free Radical Copolymerization ◽  
Good Efficiency ◽  
Molecular Weights ◽  
Grafting Reaction ◽  
Viscosity Variation ◽  
End Capping

AbstractIn this study, 2-oxopropylmethacrylate-terminated poly(N-vinyl-2- pyrrolidone) is produced by cationic polymerization using HClO4 as an initiator. Termination (end capping) step is accomplished using 2- hydroxypropylmethacrylate (2HPMA) and the polymer product has different chain lengths of molecular weight averages ranging from 672 to 3049 g/mol. The study also synthesised amphipathic graft copolymers having hydrophobic poly(α- methylstyrene) as a backbone chain and hydrophilic poly(N-vinyl-2-pyrrolidone) (PVP) as side chains of various lengths. The copolymer synthesis was accomplished by free radical copolymerization of ω-oxopropylmethacrylate PVP in the presence of α-methyl styrene initiated with benzoyl peroxide. Measurements of the dynamic viscosity of the polymer solution (20% weight of macromonomers in ethanol) show that the viscosity is proportional to the average molecular weights M̅n . However, a reverse behaviour of the viscosity variation with regard to M̅n is observed for graft copolymer samples. The viscosity variation with respect to the graft copolymer mass must be due to steric effects, which are strongly pronounced in grafted copolymer chains. Appearance of the number of side chains attached to poly(α-methylstyrene) backbone reveals that the grafting reaction has occurred with good efficiency.

Facile synthesis of GalNAc monomers and block polycations for hepatocyte gene delivery

2021 ◽  
Author(s):  
Matthew R. Bockman ◽  
Rishad J. Dalal ◽  
Ramya Kumar ◽  
Theresa M. Reineke
Keyword(s):  
Gene Delivery ◽  
Synthetic Route ◽  
Facile Synthesis ◽  
Low Toxicity ◽  
Delivery Vehicles

Here, we present a facile synthetic route for a monomer displaying N-acetyl-d-galactosamine and subsequent copolymerization in a block format with cationic subunits readily accessing liver-targeted polymeric pDNA delivery vehicles with low toxicity.

scholarly journals Environmentally friendly and facile synthesis of Rh nanoparticles at room temperature by alkaline ethanol solution and their application for ethanol electrooxidation

RSC Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3161-3169 ◽  
Author(s):  
Fuhai Li ◽  
Hanqin Weng ◽  
Yun Shang ◽  
Zuoming Ding ◽  
Zheng Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Environmentally Friendly ◽  
Ethanol Solution ◽  
Ethanol Electrooxidation ◽  
Synthetic Route ◽  
Facile Synthesis

A facile, fact and green synthetic route was developed to prepare Rh nanoparticles at room temperature.

Facile synthesis of dual-responsive thioether-bridging graft copolymers by combination of controlled polymerization and thio-bromo click reaction

Polymer ◽  
2018 ◽  
Vol 157 ◽  
pp. 59-66 ◽  
Author(s):  
Dandan Tang ◽  
Wenxue Dai ◽  
Jian Zhang ◽  
Xiangdong Zhou ◽  
Youliang Zhao
Keyword(s):  
Click Reaction ◽  
Graft Copolymers ◽  
Facile Synthesis ◽  
Controlled Polymerization ◽  
Dual Responsive

Adhesive properties of aluminum-containing functionalized polymer composites obtained in the process of mechano-chemical modification

2021 ◽  
Vol 10 ◽  
pp. 27-36
Author(s):  
K. V. Allahverdiyeva ◽  
Keyword(s):  
Maleic Anhydride ◽  
Polymer Matrix ◽  
Graft Copolymer ◽  
Methacrylic Acid ◽  
Graft Copolymers ◽  
Aluminum Foil ◽  
Adhesive Properties ◽  
Pressing Temperature ◽  
Type Of Fracture ◽  
Dispersed Aluminum

The influence of the concentration of finely dispersed aluminum and compatibilizer on the resistance to peeling of aluminum foil from the surface of a composite based on low density polyethylene and high density polyethylene is considered. To improve the compatibility of the filler with the polymer matrix, a compatibilizer was used, which is a graft copolymer of polyethylene of various grades with methacrylic acid and maleic anhydride. Copper and aluminum foil was used as a substrate. It is shown that the introduction of a compatibilizer into the composition of aluminum-filled composites improves their peeling resistance. It has been found that if an aluminum filled compatibilizer is used directly as an adhesive, then the peeling resistance of copper and aluminum foil is significantly increased. Graft copolymers of polyethylene with maleic anhydride have the highest peel resistance values. The results of the study of the influence of the pressing temperature on the type of adhesive failure are presented. It is shown that with an increase in the pressing temperature, a mixed type of adhesive destruction is observed. It has been experimentally proved that, in percentage terms, the cohesive type of fracture prevails in composites where graft copolymers are used as a polymer matrix. It was found that a 100 % cohesive type of fracture is observed in foil-clad composites pressed at a temperature of 190 °C, where a graft copolymer of polyethylene with methacrylic acid or maleic anhydride is used as an adhesive.

Synthesis and properties of arborescent polyisobutylene-poly(ethylene oxide) graft copolymers: a comparison of linear and arborescent graft copolymer architectures

2014 ◽  
Vol 64 (5) ◽  
pp. 611-620 ◽  
Author(s):  
Solmaz Karamdoust ◽  
Patrick Crewdson ◽  
Mark Ingratta ◽  
Elizabeth R Gillies
Keyword(s):  
Ethylene Oxide ◽  
Graft Copolymer ◽  
Graft Copolymers ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Facile synthesis of functionalized urea, imidazolium salt, azide, and triazole from a 2-amino-5,7-dimethyl-1,8-naphthyridine scaffold and their utilization in fluoride ion sensing

2018 ◽  
Vol 42 (12) ◽  
pp. 10059-10066 ◽  
Author(s):  
Mandeep K. Chahal ◽  
Tawseef Ahmad Dar ◽  
Muniappan Sankar
Keyword(s):  
Selective Recognition ◽  
Fluoride Ion ◽  
Synthetic Route ◽  
Facile Synthesis ◽  
Imidazolium Salt ◽  
Ion Sensing

We report an elegant and modest synthetic route for the synthesis of four new 1,8-naphthyridine-based receptors (1a, 1b, 2, 3 and 4). Among them, 1a and 2 exhibit selective recognition of F− ions.

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