Copolymerizations of 2-(dimethylamino)ethyl methacrylate with (methyl)acrylates initiated by a neutral Pd(II)-based complex

Pang, Xingan; Sun, Hongjian; Shen, Qi

doi:10.1016/j.polymer.2004.03.064

Cited by 18 publications

(13 citation statements)

References 16 publications

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“…3a-c, respectively. The signals observed [21] of BuMA, and these two signals confirmed the presence of both 4-VP and BuMA in the copolymer matrices. The peaks due to aromatic protons of pyridine ring of 4-VP appear at two different positions [15,22].…”

Section: Infraredsupporting

confidence: 62%

A conductivity study of polyelectrolytes based on 4-vinyl pyridine and butylmethacrylate

Borah

Dutta

2008

Ionics

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In this paper, the chain flexibility of P4-VP was tried to increase by lowering its glass transition temperature (T g ) and by increasing its amorphous region by copolymerizing with butyl methacrylate. The copolymers were prepared in five different feed molar ratios to optimize the required properties such as higher room temperature conductivity and film-forming capacity. The conductivity and conduction behavior of the copolymers, as well as their hydrochloride and hydrobromide salts, have been reported. The copolymers were prepared by solution polymerization technique, using tetrahydrofuran as solvent at 60°C, and the salts were prepared by simple acidification. The copolymers and their salts were characterized by scanning electron micrographs, infrared, proton nuclear magnetic resonance, thermogravimetric, differential scanning calorimetry and AC impedance measurements. There was about 10 3 -to 10 4 -fold increase in room temperature conductivity of these plasticized polyelectrolytes. The conduction behavior was found to be predominantly ionic. The scientific importance of this paper is that, unlike polymer electrolytes, no external salt is used; instead the virgin polymer and polyelectrolytes are used for conductivity measurements.

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Section: Infraredsupporting

confidence: 62%

A conductivity study of polyelectrolytes based on 4-vinyl pyridine and butylmethacrylate

Borah

Dutta

2008

Ionics

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“…Instead, these results agree qualitatively with the reactivity listed in Refs. , where

r_{MMA} > r_{DMAEMA}

are found even though only by limited amounts.…”

Section: Resultsmentioning

confidence: 86%

“…In the literature, we found that random DMAEMA/MMA copolymers have been synthesized using different approaches such as reversible addition‐fragmentation chain transfer (RAFT), and radical polymerization in presence of AIBN or palladium acetylide as initiator species. The latter approach was suggested to present “some characteristics of atom transfer radical polymerization (ATRP)” . The reactivity ratios obtained showed an almost similar relative reactivity of the two monomers or, in few cases, a slightly higher reactivity of DMAEMA with respect to MMA despite the different experimental conditions (Table ).…”

Section: Resultsmentioning

confidence: 99%

On the origin and consequences of high DMAEMA reactivity ratio in ATRP copolymerization with MMA: An experimental and theoretical study^#

Mella

Rocca

Miele

et al. 2018

J. Polym. Sci. Part A: Polym. Chem.

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Designing and tuning a copolymerization process to obtain specific material properties is still fundamentally empirical and requires the determination of apparent reactivity ratios rs. To this end, PEG–(MMA–DMAEMA)n copolymers obtained via ATRP of MMA and DMAEMA using a PEG‐based initiator in toluene were analyzed to extract monomer relative reactivities; the impact of changing solvent on the latter was also tested. Differing from previous free radical and controlled radical copolymerizations (CRcoP), we found that DMAEMA is preferentially included (rMMAnormals=0.36(±10%) and rDMAEMAnormals=2.76(±15%)) in toluene; increasing the solvent polarity decreased the gap between rs. With these data, kMC simulations based on the copolymerization terminal model were used to investigate copolymer microstructure, which is not amenable to NMR investigation. kMC simulations evidenced both a gradient‐like nature of the copolymers and a somewhat unexpected qualitative change in the probability of finding MMA‐rich triads along the chain depending on initial feed composition. An additional DFT analysis suggested the likely formation of a DMAEMA:CuBr:2‐2′‐bipyridine complex, which being involved in the regeneration of reactive radicals from dormant species, is expected to locally increase DMAEMA concentration favoring its addition to the growing chains. The formation of such complex is also supported by 1H‐NMR experiments. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 1366–1382

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“…The present poly(AN-co-AMPS) can be depicated as diblock copolymer, which probably composed of PAN mixed with some AMPS units, or of AMPS sequence formed after consumption of AN. 24 The proposed mechanism of graft copolymerization can be represented as shown below:…”

Section: Resultsmentioning

confidence: 99%

Radiation‐induced graft copolymerization of cellulosic fabric waste and its application in the removal of cyanide and dichromate from aqueous solution

El-Kelesh

El‐Aal

Hashem

et al. 2007

J of Applied Polymer Sci

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Graft polymerization and crosslinking in radiation processing are attractive techniques for modification of the chemical and physical properties of the conventional polymer. The graft polymerization and subsequent chemical treatment can introduce a chelate agent function into a conventional polymer such as cellulosic fabric. Cellulosic graft copolymers were prepared by the reaction of the fiber with acrylonitrile (AN) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS) in DMF initiated by g-radiation 60 Co. The grafted fabric was chemically treated with hydroxyl amine to obtain amidoxime from. Factors affecting the grafting such as radiation dose, monomer concentration and solvent concentration as well as monomer composition was investigated. The chemically modified graft fabric was applied for recovery of cyanide and dichromate from aqueous solution. CN À shows 89% removal, whereas dichromate has 65% removal.

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Copolymerizations of 2-(dimethylamino)ethyl methacrylate with (methyl)acrylates initiated by a neutral Pd(II)-based complex

Cited by 18 publications

References 16 publications

A conductivity study of polyelectrolytes based on 4-vinyl pyridine and butylmethacrylate

A conductivity study of polyelectrolytes based on 4-vinyl pyridine and butylmethacrylate

On the origin and consequences of high DMAEMA reactivity ratio in ATRP copolymerization with MMA: An experimental and theoretical study^#

Radiation‐induced graft copolymerization of cellulosic fabric waste and its application in the removal of cyanide and dichromate from aqueous solution

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Copolymerizations of 2-(dimethylamino)ethyl methacrylate with (methyl)acrylates initiated by a neutral Pd(II)-based complex

Cited by 18 publications

References 16 publications

A conductivity study of polyelectrolytes based on 4-vinyl pyridine and butylmethacrylate

A conductivity study of polyelectrolytes based on 4-vinyl pyridine and butylmethacrylate

On the origin and consequences of high DMAEMA reactivity ratio in ATRP copolymerization with MMA: An experimental and theoretical study#

Radiation‐induced graft copolymerization of cellulosic fabric waste and its application in the removal of cyanide and dichromate from aqueous solution

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On the origin and consequences of high DMAEMA reactivity ratio in ATRP copolymerization with MMA: An experimental and theoretical study^#