Hydrophilic vinyl polymer

TSK Toyopearl is a spherical porous hydrophilic vinyl polymer it is generally thought that the polymer is poly(vinyl alcohol). TSK Toyopearl-IDA-Zr(IV) microspheres (IDA content 33 pmol/mL gel) were prepared for the separation and preconcentration of fluoride at ng/mL level in a flow system. 

Many synthetic hydrophilic vinyl polymers and copolymers have been studied as water-soluble drug carriers, most of them being based on substituted acid derivatives or on vinyl monomers (e.g., N-vinylpyrrolidone). In principle, these polymers contain... 

A munber of other synthetic polymer networks have been developed and commercialised for liquid chromatography including polyvinylacetate cross-linked with butanediol divinyl ether, Merkogel GPC packings (Merck), polyvinylalcohol, Frac-togel and Toyopearl (Toyo Soda), a hydroxylated acrylic monomer cross-linked with a bifunctional agent, Trisacryl (Sepracor) and a hydrophilic vinyl polymer, TSKgel PW (Toyo Soda). 

Toyo Soda Hydrophilic vinyl polymer TSKgel PW... 

Many kinds of nonbiodegradable vinyl-type hydrophilic polymers were also used in combination with aliphatic polyesters to prepare amphiphilic block copolymers. Two typical examples of the vinyl-polymers used are poly(/V-isopropylacrylamide) (PNIPAAm) [149-152] and poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) [153]. PNIPAAm is well known as a temperature-responsive polymer and has been used in biomedicine to provide smart materials. Temperature-responsive nanoparticles or polymer micelles could be prepared using PNIPAAm-6-PLA block copolymers [149-152]. PMPC is also a well-known biocompatible polymer that suppresses protein adsorption and platelet adhesion, and has been used as the hydrophilic outer shell of polymer micelles consisting of a block copolymer of PMPC -co-PLA [153]. Many other vinyl-type polymers used for PLA-based amphiphilic block copolymers were also introduced in a recent review [16]. 

The critical micelle concentration (CMC) of Pluronics [121] has been found to be rather sensitive to temperature, which is ascribed to the changes in hydrophilicity of the ethylene oxide moiety with temperature. As shown already, monolayer viscoelasticity is correlated with the hydrophilicity of polymer backbones such as in polyethers, and that of the pendant group in vinyl polymers. It has been shown that PPO acts differently as a polyether... 

Poly(methyl acetoxy silylene) [poly(MASi)] is also claimed [130] to initiate the polymerization of cyclohexyl methacrylate upon UV irradiation and to crosslink the resulting polymer by air exposure. Finally, the pyridinium salt of partially chloromethylated poly(methyl phenyl silylene) (Q-PMPSi) is reported [131] to initiate the polymerization, in aqueous solution, of hydrophilic vinyl monomers such as methacrylic acid, acrylamide, 2-hydroxyethyl methacrylate and 1 -vinyl-2-pyrrolidone. 

Superabsorbent polymers should be essentially hydrophilic polymers. Therefore, natural polymers such as starch and cellulose or synthetic polymers such as poly(acrylate), poly(vinyl alcohol), poly(acrylamide), or poly(oxyethylene) are used as hydrophilic base polymers. 

Recently, our research attempted to find new materials based on blends of biological macromolecules, such as structural proteins and polysaccharides, and hydrophilic synthetic polymers, such as poly(vinyl alcohol) (PVA), in which the biocompatibility of the former is combined to the mechanical properties of the latter ((. ... 

Hydrogels of CNCs have many desirable properties, including low cost, nontoxicity, hydrophilicity, biocompatibility, and biodegradability, all of which contribute to their potential applications in bioengineering and biomedicine. For example, CNC dispersed in a solution of cellulose, sodium hydroxide, and urea formed a gel that steadily released bovine semm albumin into a simulated body fluid [161]. Nanocomposites of CNC and poly(vinyl alcohol), a hydrophilic biocompatible polymer, exhibited a broad range of mechanical properties that could be tuned to mimic those of cardiovascular tissues and, therefore, have potential applications as cardiovascular implants [162]. 

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