Dimethylaminoethyl methacrylate DMAEMA

Copolymers. Copolymers have also been studied (16-18). While one comonomer contains 1-2 quaternary nitrogen in a flexible pendant chain, the other comonomer was nonionic. Copolymers of the methyl chloride salt of dimethylaminoethyl methacrylate (one quaternary nitrogen atom) and dimethylaminoethyl methacrylate (DMAEMA) and of MDTHD (2 quaternary nitrogen atoms) and DMAEMA, N,N-dimethylacryl-amide (NNDMAm) or dimethylaminopropyl methacrylate (DMAPMA) have been studied and the results summarized in Table VI. 

The first PFS-fr/ock-polymethacrylate copolymer was reported in 2002 28 The procedure involved a two-step anionic polymerization (Scheme 3.7). Hydroxy terminated polyferrocenylsi-lane (PFS-OH) was initially synthesized using r-butyldimethylsilyloxy-1-propyllithium as an initiator bearing a protected alcohol functionality. Once isolated, PFS-OH was deprotonated using potassium hydride to afford the alkoxy chain end that initiates dimethylaminoethyl methacrylate (DMAEMA) for anionic polymerization. The PFS- -PDMAEMA block copolymer was obtained in a high yield (Mn = 11,000 PDI =1.3) and with a low polyferrocenylsilane content (PFS PDMAEM A = 1 5). 

Copolymer of N,N-dimethylaminoethyl methacrylate (DMAEMA) This polyca-tionic pH- and temperature-sensitive gel possesses specific coordination binding sites for transition-metal ions. 

Nonionic Copolymers Copolymers of Vinyl Pyrrolidone and Vinyl Acetate (VA) and Terpolymer of Vinyl Pyrrolidone, Dimethylaminoethyl Methacrylate (DMAEMA), and Vinyl Caprolactam (VQ... 

Non-ionic, anionic, and cationic VP copolymers are all available commercially to enhance the hydrophilic, hydro-phobic, and ionic properties of PVP for specific applications. Important comonomers include vinyl acetate (VA), acrylic acid (AA), vinyl alcohol, dimethylaminoethyl-methacrylate (DMAEMA), styrene, maleic anhydride, acrylamide, methyl methacrylate, lauryl methacrylate (LM), a-olefins, methacrylamidopropyltrimethyl ammonium chloride (MAPTAC), vinyl caprolactam (VCL), and dimethylaminopropylmethacrylamide (DMAPMA). 

N,N-dimethylaminoethyl methacrylate) (DMAEMA) by an SPG emulsification technique [34]. The process consists of two steps - emulsification and polymerization. The oil phase containing monomers (styrene and DMAEMA), hexadecane (HD) and an initiator N.hf-azobis (2,4-dimethyl valeronitrile) (ADVN) is pressed by nitrogen gas through the SPG membrane into the aqueous phase. The aqueous phase contains stabilizer polyvinyl alcohol (PVA), surfactant sodium lauryl sulfate (SLS), electrolyte Na2S04 and water-soluble inhibitor (NaN02 or diaminopheny-lene). The emulsion obtained is then transferred to a separate reaction kettle and polymerization is started by raising the reaction temperature to 70 °G. After 24 h, microcapsules with uniform size are obtained. 

Tertiary Amine-Containing Copoiymers. Copolymers based on dimethylaminoethyl methacrylate (DMAEMA) in either free-amine form or... 

Dai et al. [69] modified the surface of microporous polypropylene (PP) membranes with phospholipid polymer using a new economic and convenient method. The process included the photo-irradiated graft polymerization of N-N-dimethylaminoethyl methacrylate (DMAEMA) and the ring-opening reaction of the grafted polyDMAEMA with 2-alkyloxy-2-oxide-l,3,2-dioxophospholanes (AOP). The FTIR spectra confirmed the chemical changes of the membrane surface and supported that PP membrane with excellent blood compatible surface could be fabricated by their novel method. 

An acrylic resin comprising of 65 wt% 2—hydroxyethyl methacrylate (HEMA), 33 wt% butyl methacrylate (BMA) and 2 wt % dimethylaminoethyl methacrylate (DMAEMA) was made by solution polymerization at 40% solid in xylene/l—methoxy—2—propanol (1/1)- The polymerization was done at 90°C for 6 h using 1% azobisisobutyronitrile initiator. Another acrylic polymer. 

Random copolymerization of dimethylaminoethyl methacrylate (DMAEMA) and poly(ethylene glycol)methyl ether methacrylate (PEGMA) using RAFT polymerization results in dually responsive (temperature and pH) copolymers [64]. When the amino groups of DMAEMA are pro-tonated at pH 4, the copolymers do not exhibit an LCST. However, at pH 7 and 10, the observed LCST increases linearly with PEGMA content. Thus, the copolymer LCST (35-80 °C) can be tuned by adjusting solution pH and copolymer composition (Fig. 3.8). 

Figure 2 illustrates the degree of swelling for various solvents for gels made of methacrylic acid derivatives in the ester group. It shows both ethyl methacrylate (ENA) gel and 2-dimethylaminoethyl methacrylate (DMAEMA) gel. The composition of the gels is listed in Table 2. The... 

Fig, 2 The degree of swelling of dimethylaminoethyl methacrylate (DMAEMA) gel and ethyl methacrylate (EMA) gel in various solvents. 

OEGMA Copolymers with Dimethylaminoethyl Methacrylate (DMAEMA)... 

The acrylic monomers that make up cationic polymers are usually the same as those that make up anionic polymers (Table 2.1). Cationic acrylic polymers contain a basic ionizable group, which is usually introduced in one of two ways. The most common method is copolymerization of monomers with an amine group containing monomer, such as dimethylaminoethyl methacrylate (DMAEMA, Fig. 2.6). 

CCT has also been applied to surface chemistry. Nanosilica surface-grafted PMMA macromonomers were prepared by CCTP. The first step involved CCTP of 3-(trimethoxysilyl) propylmethacrylate coupled to the nanosilica surface with terminal vinyl groups accessible on the surface. Subsequently, grafting of PMMA by CCTP was achieved. Complex polymeric stmaures have been synthesized by grafting of copolymers. One example has St/BA/2-dimethylaminoethyl methacrylate (DMAEMA) as the tmold chain composition with the lateral chain being composed of MMA/BMA for use in dispersants with quatemization able to occur." ... 

A similar approach was used by the same group to encapsulate MMT platelets using cationic RAFT copolymers composed of randomly distributed BA and quatemized units of 2-dimethylaminoethyl methacrylate (DMAEMA) and a MMA BA (10 1 weight ratio) monomer feed [86]. Despite the successful formatiOTi of flat, comflake-Uke composite particles. Brownian motion prevented them from adopting a specific orientation after deposition on a substrate. 

---