Methacrylates polymer brushes

Tranchida D, Sperotto E, Staedler T, Jiang X, Schbnherr H. Nanomechanical properties of oligo(Ethylene Glycol Methacrylate) polymer brush-hased biointerfaces. Adv Eng Mater 2011 13 B369. 

Qin, S., et al., Polymer brushes on single-walled carbon nanotubes by atom transfer radical polymerization ofn-butyl methacrylate. Journal of the American Chemical Society, 2003. 126(1) p. 170-176. 

Fig.44 (left) Dry thickness (in nm) of a poly(2-hydroxyethyl methacrylate) (PHEMA) brush in an orthogonal gradient as a function of the PHEMA grafting density and molecular weight The scale represents the thickness of dry polymer (in nm). (right) Adsorbed amount of lysozyme as a fimction of the position on the orthogonal PHEMA gradient. The scale represents the fluorescence intensity (in a.u.). (Reproduced with permission from [164])... 

Figure 5.21 TEM images of poly(w-butyl methacrylate)-grafted MWCNTs with azido groups (MWCNT-Az-PnBMA) (a), MWCNTs grafted with both poly( -butyl methacrylate) and poly(ethylene glycol) brushes (MWNT-PnBMA-PEG) (b, c). (d) Cartoon for the local phase separation and assembly of amphiphilic polymer brushes into Janus polymer structures on CNTs as shown in (c) (marked by arrows), (e) Photograph of MWCNT-PnBMA-PEG dispersed in a mixed solvent of water (upper layer) and chloroform (bottom layer). Reprint with permission from Zhang et al...

Hb polymer brushes can be conveniently prepared by surface-initiated ATRP-SCVP of a suitable inimer from an initiator-functionalized surface. Mori et al. describe the synthesis of hb poly(2-(2-bromopropionyloxy)ethyl acrylate and 2-(2-bromoisobutyryloxy)ethyl methacrylate. " Another approach is presented by different groups employing halloysite nanotubes and GMS or 2-(bromoacetyloxy)ethyl... 

Some polymers are linear—a long chain of connected monomers. PE, PVC, Nylon 66, and polymethyl methacrylate (PMMA) are some linear commercial examples found in this book. Branched polymers can be visualized as a linear polymer with side chains of the same polymer attached to the main chain. While the branches may in turn be branched, they do not connect to another polymer chain. The ends of the branches are not connected to anything. Special types of branched polymers include star polymers, comb polymers, brush polymers, dendronized polymers [1], ladders, and dendrimers. A cross-linked polymer, sometimes called a network polymer, is one in which different chains are connected. Essentially the branches are connected to different polymer chains on the ends. These three polymer structures are shown in Figure 1.3. 

In this work, we wiU discuss the characteristic size-exclusion effect and excellent protein repeUency of concentrated brushes on the basis of our experimental data previously reported with poly(2-hydroxyethyl methacrylate) (PHEMA) brushes. PHEMA is a hydrophilic, biocompatible polymer, but the biocompatibility of PHEMA cast film is reported to be not as good as e.g., poly(2-methacryloxyethyl-phosphorylcholine) and poly(2-metho-xyethylacrylate) cast films. Hence any favorable results on the PHEMA brushes could be ascribed more to the structural,... 

ATRP was also combined with other polymerization methods in the preparation of polymer clay nanocomposites. Yang and coworkers reported the preparation of poly(L-lactide) (PLLA) comb polymer brushes on the surface of sihcate layers by using a combination of in-situ ATRP and ROP (Figure 10.7) [34]. An ATRP initiator with a quaternary ammonium salt end group was intercalated into the interlayer spacing of clay layers via ion exchange. In-situ ATRP of hydroxyethyl methacrylate (HEMA) in the presence of CuBr and bipyridine afforded the PHEMA backbone. PLLA comb polymers were grown from the PHEMA backbone by ROP. Because... 

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