Poly ethylene glycol methyl ether

Polyphosphazenes sulfonates XIX with the anion covalently attached to the polymer are a new class of cation conductors that have been synthesized by Shriver [625]. They were obtained by reaction of Na0C2H4S03Na with an excess of polydichlorophosphazene in the presence of 15-crown-5, followed by the reaction of the partially substituted product with the sodium salt of poly(ethylene glycol methyl ether). The conductivity at 80 °C of the polymer with x=1.8, m=7.22 is 1.7x10 S cm This low conductivity can be attributed to an extensive ion pair formation between the sodium and sulfonate ions. 

Development of sterically stabilized liposomes (SSL) composed of high Tm lipids, cholesterol, and a lipopolymer, such as poly-(ethylene glycol methyl ether)-l,2-distearoyl-i n-glycero-3-phospho-ethanolamine triethyl ammonium salt (1,3-5,8,9,14,15)... 

C 20 poly(ethylene glycol methyl ether) semi-selective response to... 

Recent attempts to prepare 26 by RAFT, however, failed [153]. Double hydrophilic block copolymers of NIPAM and 23e [154], as well as of N,N-diethylacrylamide and 23b [155], were prepared with the CTA benzyl dithiobenzoate, and exhibit LCST and UCST behavior in water. The new polymer 51 is also part of amphiphiUc di- and triblock copolymers [152]. Diblock copolymers with poly(ethylene glycol) methyl ether acrylate, dimethylacry-lamide, or 4-vinylstyrene sulfonate are macrosurfactants with a switch-able hydrophobic block. Triblock copolymers containing additionally 4-vinylbenzoic acid differ in the nature of the hydrophilic part [152]. Near-monodisperse block copolymers of N,N-dimethacrylamide and 49a were synthesized in different ways via macro-CTAs of both monomers as the first step. Such sulfobetaine block polymers form aggregates in pure water but are molecularly dissolved after addition of salt [152,156,157]. 

Poly(ethylene glycol) methyl ether methacrylate PEGMEM... 

Production of nonfouUng polymer surfaces has been achieved by radiation-induced grafting of poly(ethylene glycol) methyl ether methacrylate (PEGMEM) and poly(ethylene glycol) methacrylate (PEGMA) with 2-hydroxyethyl methacrylate (HEMA) onto silastic films (Sun et al. 1986). 

Poly(ethylene-co-acrylic acid)-g-poly(ethylene glycol) methyl ether dioctyl phthalate and poly(ethylene glycol) methyl ether 2006ZHO... 

JON Jones, J.A., Novo, N., Flagler, K., Pagnucco, C.D., Carew, S., Cheong, C., Kong, Z., Burke, N.A.D., and Stoever, H.D.H., Thermoresponsive copolymers of methaciylic acid and poly(ethylene glycol) methyl ether methacrylate, J. Polym. Sci. Part A Polym. Chem., 43, 6095, 2005. 

Ethylcellulose-g-[poly(ethylene glycol) methyl ether methacrylate] Hydroxypropylcellulose-g-poly(A -isopropylaciylamide)-g- 150... 

Additionally, reactions of isocyanate with amines provide another cross-linking approach to make nanogels. Cross-linked micelles with pH-responsive features were obtained by the addition of excess amounts of 1,8-diaminooctane to micellar aggregates consisting of poly (poly(ethylene glycol) methyl ether methacrylate)-b/oc -poly(methyl methacrylate-co-poly (3-isopropenyl-a,a-dimethylbenzyl isocyanate)) [PPEGMEMA-b-P(MMA-co-TMI)] (Figure 54.9). 

To prepare multilayer membranes, another irradiation method to prepare cross-linked microporous multilayer membranes with enhanced thermal stability has been developed. It is realized by two steps. First, the polymer-blended layers, such as poly(ethylene glycol) diacrylate/poly(ethylene glycol) methyl ether acrylate are coated onto polyolefin microporous membranes. Second, the resultant membranes are irradiated to form chemically cross-linked membranes. They exhibited higher thermal and electrochemical properties compared to conventional separators. TOth the increase of irradiation dose, the thermal stability of the resultant membranes increases accordingly. By using the microporous multilayer membranes, the advantages of each component layers are well combined. 

LEE Lee, M.-J., Tuan, Y.-C., and Lin, H.-M., Pressme-volume-temperature properties for binary and ternary polymer solntions of poly(ethylene glycol), poly(propylene glycol), and poly(ethylene glycol methyl ether) with anisole, Polymer, 44, 3891, 2003. 

Poly [dimethylsiloxane-co-methyl (3-hydroxypropyl) siloxane-graft-poly (ethylene glycol) methyl ether. See Dimethylsiloxane/EO copolymer... 

In an expanded study, Fournier et al. used RAFT to make random N,N-(dimethyIamino)ethyI methacrylate (DMAEMA) and poly(ethylene glycol) methyl ether methacrylate (PEGMA) copolymers utilizing their automated platform. Since both of... 

Polymerization of BzMA using (Poly(ethylene glycol) Methyl ether) 2-bromoisobutyrate (MeOPEG-I) as Macroinitiator... 

The use of more complex systems such as ternary blends allows the functionalization of the surfaces with varies chemical functionalities. For instance a PS matrix was mixed with two block copolymers, a hydrophobic (PS-b-P5FS) and an amphiphilic polystyrene-b-poly[poly(ethylene glycol) methyl ether methacrylate] (PS-6-P(PEGMA)) copolymer [96], The chemical distribution of the resultant surface pattern implies an enrichment of the holes in the amphiphilic copolymer with an external surface mainly functionalized in the fluorinated copolymer with low surface energy (Scheme lO.lg). Other ternary blends combining incompatible copolymers and homopolymers have been reported leading to more complex topographies and chemical distributions [148],... 

A versatile, simple and inexpensive method has been recently proposed for the synthesis of sequence-controlled multiblock copolymers by one-pot polymerisation at ambient temperature. Aciylic block copolymerisation under UV irradiation 360 nm) was obtained in the absence of conventional photoredox catalysts and dye-sensitizers, by means of low concentrations of CuBra in synergy with MCe-Tren [MCe-Tren Tren = tris(2-aminoethyl)amine]. The potential of the method was demonstrated by alternating four different aciylate monomers in various combinations within the polymer composition. Quantitative conversion and narrow dispersity were achieved. " The procedure is versatile, as demonstrated by polymerisation of a number of (meth)aciylate monomers, including poly(ethylene glycol) methyl ether aciylate (PEGA480), te/t-butyl aciylate, methyl methaciylate, and styrene. Moreover, hydrojyl- and vic-diol-functional initiators are tolerated, forming a,co-heterofunctional poly(aciylates). Notably, temporal control is... 

Figm 10 Hydrodynamic radii (/ h) of PVCL/poly(acetoacetoxyethyl methacrylate) (PAAEM) microgel particles as a function of poly(ethylene glycol)methyl ether methacrylate (PEGMEMA) content (r=20 C). Reprinted with permission from Pich, A. Berger, S. Omatsky, 0. etal. Colloid Polym. Sci. 2009, 287,269-275. Copyright 2009 Springer. 

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