Dimethyl aminoethyl methacrylate

Fig. 11 Chemical formulas of poly(acryl amide) (PAAm), poly(methyl methacrylate) (PMMA), poly(2-hydroxyethyl methacrylate) (PHEMA), poly(t-butyl acrylate) (PtBA), and poly(acrylic acid) (PAA), and poly(dimethyl aminoethyl methacrylate) (PDMAEMA)...

While the bulk behavior of polyampholytes has been investigated for some time now, studies of interfacial performance of polyampholytes are still in their infancy. There are several reasons for the limited amount of experimental work the major one being the rather complex behavior of polyampholytes at interfaces. This complexity stems from a large array of system parameters governing the interaction between the polymer and the substrate. Nearly all interfacial studies on polyampholytes reported to-date involved their adsorption on solid interfaces. For example, Jerome and Stamm and coworkers studied the adsorption of poly(methacryhc acid)-block-poly(dimethyl aminoethyl methacrylate) (PMAA-fc-PDMAEMA) from aqueous solution on sihcon substrates [102,103]. The researchers found that the amount of PMAA-fo-PDMAEMA adsorbed at the solution/substrate interface depended on the solution pH. Specifically, the adsorption increased... 

The temperature optimization for the RAFT polymerization of EAA revealed an optimum reaction temperature of 70 °C. Block copolymers with a poly(methyl acrylate) (PMA), a poly(n-butyl acrylate) (PnBA), a PMMA, or a poly(A,A-dimethyl aminoethyl methacrylate) (PDMAEMA) first block and a poly(l-ethoxyethyl acrylate) (PEEA) second block were successfully synthesized in an automated synthesizer. The synthesis robot was employed for the preparation of 16 block copolymers consisting of 25 units of the first block composed of PMA (exp. 1 ), PnBA (exp. 5-8), PMMA (exp. 9-13), and PDMAEMA (exp. 13-16) and a second block of PEEA consisting of 25, 50, 75, or 100 units, respectively. The first blocks were polymerized for 3 h and a sample from each reaction was withdrawn for SEC analysis. Subsequently, EAA was added and the reactions were continued for 12 h. The molar masses and PDI values of the obtained block copolymers are shown in Fig. 15. 

Figure 11.5. Changes in molecular weight of the template during copolymerization of methyl methacrylate with methacrylic acid. Template poly(dimethyl aminoethyl methacrylate) PDAMA.

Another complex obtained by template polymerization of dimethylaminoethyl methacrylate in the presence of polyCacrylic acid) was synthesized and analyzed by Abd-Ellatif. The procedure of separation was as follows to the complex dissolved in 10% NaCl solution, 10% NaOH solution was added dropwise and white gel was precipitated. Addition of sodium hydroxide was continued until no more precipitate was separated. The soluble polymer after dialysis was dried and identified as poly(acrylic acid). The insoluble polymer fraction was found to be insoluble in toluene, benzene, tetrahydrofurane, but soluble in acetone/water (2 1 v/v). Elemental analysis and IR spectra lead to the conclusion that this fraction consists of pure poly(dimethyl aminoethyl methacrylate) which was expected as a daughter polymer. 

Acrylates which have been tried successfully are methyl methacrylate (MMA), ethyl acrylate (EA), methyl acrylate (MA), N,2V-dimethyl-aminoethyl methacrylate (DMAEMA), N,N-diethylaminoethyl acrylate (DMAEA), terf-butylaminoethyl methacrylate (BAEMA), and a 30% aqueous solution of hydroxyethyl methacrylate (HEMA). Most studies were made with N,IV-dimethylaminoethyl methacrylate since its basic group would render the polymer dyeable with acid dyes. 

Effect of Water. It was observed quite by accident that addition of a small amount of water increased the conversion of N,N-dimethyl-aminoethyl methacrylate or the corresponding acrylate into block polymers (Table IX). On the other hand, acrylates such as methyl meth-... 

Addition of water has been found to be the best way to improve the effective use of N,N-dimethylaminoethyl methacrylate. Adding 0.4 ml. of water to the mixture before adding N,N-dimethylaminoethyl methacrylate and benzoyl peroxide increased incorporation of N,N-dimethyl-aminoethyl methacrylate tenfold. Water was not beneficial for polymerizations with vinylpyridine. 

Inactive polypropylene powder, when treated with N,N-dimethyl-aminoethyl methacrylate and benzoyl peroxide in hexane at 30°C. did not possess detectable amounts of —COOR absorbance. The absence of —COOR absorbance in the resultant polymer gives further evidence that N,N-dimethylaminoethyl methacrylate either did not polymerize under the conditions used or formed only a very low molecular weight polymer which was washed out by the finishing procedure used. It also established that an active polymer chain is necessary and that poly (N,N-di-methylaminoethyl methacrylate) does not exist as a mixture with polypropylene but is tied into the polypropylene chain. 

Poly(dimethyl-aminoethyl) methacrylate Polymer for surface passivation of semiconductor nanocrystals... 

Is a measure of the ability of a material to store a charge from an applied electromagnetic field and then transmit that energy Dimethyl aminoethyl methacrylate... 

Sulfonation was carried out by heating the asphalt with sulfur trioxide-trimethyl amine complex or sulfur trioxide-pyridine complex at temperatures near 135°C. Sulfamic acid treatment was also included in this series. Many other reagents were evaluated such as methyl methacrylate, 2-acrylamido-2-methylpropanesulfonic acid, 2-dimethyl-aminoethyl methacrylate, 2-vinylpyridine, 4-vinylpyridine, tetrahydro-phthalic anhydride, norbomene dicarboxylic anhydride, and phthalic anhydride. 

Indole-3-acetic acid MAA or N,N-dimethyl-aminoethyl-methacrylate EDMA CHC13 SPE [157]... 

Acrylamide and dimethyl-aminoethyl-methacrylate or Acrylamide and diallyl-dimethyl ammonium chloride Mannich amines... 

The free-radical copolymerization of acrylamide with three common cationic comonomers diallyldimethylammonium chloride, dimethyl-aminoethyl methacrylate, and dimethylaminoethyl acrylate, has been investigated. Polymerizations were carried out in solution and inverse microsuspension with azocyanovaleric acid, potassium persulfate, and azobisisobutyronitrile over the temperature range 45 to 60 C. The copolymer reactivity ratios were determined with the error-in-variables method by using residual monomer concentrations measured by high-performance liquid chromatography. This combination of estimation procedure and analytical technique has been found to be superior to any methods previously used for the estimation of reactivity ratios for cationic acrylamide copolymers. A preliminary kinetic investigation of inverse microsuspension copolymerization at high monomer concentrations is also discussed. 

Quaternized copolymer of PVP and dimethyl aminoethyl methacrylate with a charge density of 616 (polyquaternium-11)... 

Copolymer ethylene-dimethyl-aminoethyl methacrylate (EDAM) with 3.9% DAM side groups and ultra-high molecular weight polyethylene (UHMWPE) were blended in decalin solvent. The hot homogenized solution was poured into an aluminum tray to form gels and the decalin was allowed to evaporate from the... 

Alternative approaches involving molecules that combine the properties of a monomer with those of a surfactant (so-called polymerizable surfactants) have also been reported. For example, quaternary alkyl salts of dimethyl aminoethyl methacrylate (CnBr) surfactants were used to promote polymer encapsulation of silica gels in aqueous suspension [43, 44]. The polymerizable surfactant formed a bilayer on the silica surface, the configuration of which enabled the formation of core-shell particles. The CnBr amphiphilic molecule was either homopolymer-ized or copolymerized with styrene adsolubilized in the reactive surfactant bilayer. This concept of admicellar polymerization is detailed in Sect. 3.1. In the recent... 

P(DMAEMA-EGMA) Poly(2-dimethyl aminoethyl methacrylate-ethylene glycol dimethacrylate)... 

In the case of weakly ionizable PEs, the fraction of charged monomer units, a, is controlled by an ionization equilibrium and is affected by the local proton concentration and ionic strength. Weak polyacids such as poly(acrylic acid) (PAA) and poly(methacrylic acid) (PMAA), or polybases such as PVP and poly(dimethyl-aminoethyl methacrylate)(PDMAEMA) are typical examples of these pH-sensitive or annealing PEs. 

Yan, L., Tao, W., 2010. One step synthesis of pegylated cationic nanogel of polly (N,N -dimethyl-aminoethyl methacrylate) in aqueous solution via self stabilizing micelle using an amphiphilic macroRAFT agent. Polymers 51, 2161—21667. 

AbA acrylated abietic acid, APS (NH4)2S20g, ARGET activators regenerated by electron transfer, t-BA tert-Butyl acrylate, CL e-caprolactone, DEAEMA 2-(diethylamino)ethyl methacrylate, DMAEMA iV,lV-dimethyl aminoethyl methacrylate, PEGMA polyfethylene glycol) methyl ether methacrylate, PMMAZO 6-[4-(4-methoxyphenyl azo)phenoxy]hexyl methacrylate, SBMA sulfobetaine methacrylate, St styrene, TEMED JV -tetramethyl ethylene diamine... 

Ma L, Liu RG, Tan JJ, Wang DQ, Jin X, Kang HL, Wu M, Huang Y (2010) Self-assembly and dual-stimuli sensitivities of hydroxypropylcellulose-graft-poly(N, N-dimethyl aminoethyl methacrylate) eopolymers in aqueous solution. Langmuir 26 8697-8703... 

Plasma grafting of poly 2-(A,A-dimethyl) aminoethyl methacrylate on a micro-porous PE substrate resulted in the membrane having amine moieties (Matsuyama et al. 1996). This membrane showed high permselectivity for CO2 over Nj (130 for swollen membrane). 

Matsuyama, H., Teramoto, M. and Sakakura, H. 1996. Selective permeation of COj through poly 2-(N,N-dimethyl) aminoethyl methacrylate membrane prepared by plasma-graft polymerization technique. 

MAL Ma, L., Liu, R., Tan, J., Wang, D., Jin, X., Kang, H., Wu, M., and Huang, Y., Self-assembly and dual-stimuli sensitivities of hydroxypropylcellulose-grq -poly(iV,A/-dimethyl aminoethyl methacrylate) copolymers in aqueous solution, Langmuir, 26, 8697, 2010. 

Q., Wang, Y, and Agarwal, S. (2012) Functional poly(dimethyl aminoethyl methacrylate) by combination of radical ring-opening polymerization and click chemistry for biomedical applications. Macromol Chem. Phys., 213, 1643. 

Figure 9.8 lists the representative examples of pH-responsive polybases. Poly(A,A -dimethyl aminoethyl methacrylate) (PDMAEMA) (Fig. 9.8a) and poly(A,A-diethyl aminoethyl methacrylate) (PDEAEMA) (Fig. 9.8b) have pH-responsive amine groups in their side chains, which can gain protons under acidic conditions and release them under basic conditions. Poly(4-vinylpyridine) (PVP) shows pH sensitivity (Fig. 9.8c) owing to the pyridine group [8, 53]. Poly(vinyl imidazole) (PVI) is another pH-responsive polymer consisting of an imidazole group (Fig. 9.8d) [54]. 

FIGURE 9.8 Typical pH-responsive polybases (a) poly(M,Al -dimethyl aminoethyl methacrylate) (PDMAEMA) (b) poly(A,A -diethyl aminoethyl methacrylate) (PDEAEMA) (c) poly(4-vinylpyridine) (PVP) (d) poly(vinyl imidazole) (PVI). 

Poly[(butyl methacrylate)-co-(N,N-dimethyl-aminoethyl methacrylate)] 26658-83-3... 

Biltun, V., Armes, S.P., Bfllingham, N.C. and Tuzar, Z. (1999) Formation of block copolymer micelles and reverse micelles in aqueous solution. ACS Polym. Prepr. (Div. Polym. Chem.), 40(2), 261-262. Antoun, S., Gohy, J.F. and Jerome, R. (2001) MiceUization of quaternized poly(2-dimethyl-aminoethyl methacrylate)-fc-PMMA copolymer in water. Polymer, 42,3641-3648. Ossenbach-Sauter,M. (1981) Emulsifying properties of block copolymers, water-in-water polymeric emulsions. PhD Thesis, University of Haute Alsace, France. 

There is a limited number of studies of adsorption of diblock copolymers from nonselective solvents. One practical problem is that it is not enough to find a nonselective solvent, but that a brush-like configuration also requires selective adsorption of the A block. Because polymers are notorious for adsorbing onto many substrates [3,41], the best way is to use a mixed solvent with a composition such that A adsorbs and not B. Some early data were obtained by Wu et al. [19] for diblocks of dimethyl-aminoethyl-methacrylate (A) and n-butylmethacrylate (B) from propanol onto silica. For chains of 200 and 700 monomers, Wu et al. found a clear maximum at around 10% of A monomers, where the adsorbed amormt reaches a value of 13 mg/m. This behavior was thus very much in line with the theoretical predictions, as shown in Figure 7.2. The adsorbed amount of 13 mg/m corresponds with a grafting density of about 1 chain per 10 nm, which is reasonable but not very dense. Later experiments on diblocks with a cationic block (dimethyl-aminoethyl-methacrylate (AMA)) and a neutral block (dihydroxy-propyl-methacrylate (HM A)) on silica and titania were carried out by Floogeveen et al. [42] (Figure 7.3). 

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