Vinylbenzyltrimethylammonium chlorid

Cationic hydrophobic Poly(4-vinylbenzyltrimethylammonium chloride), poly(N-methyl-2-vinylpyridinium) iodide salt 0.5 M acetic acid with 0.3 M Na2SO,... 

Akelah andMoet [62] followed a modified approach to prepare PS-clay intercalated nanocomposites using a solvent to facilitate intercalation. MMT was ion exchanged using a polymerizable surfactant, vinylbenzyltrimethylammonium chloride. Acetonitrile was found to be the most effective solvent, producing a d-spacing of 2.45 mn versus 2.22 and... 

Poly-4-vinylbenzyltrimethylammonium Chloride, 100,400 kDa 707 1.0-5.0 Scientific Polymer Products, Ontario, NY... 

Fig. 18 a, b. Typical permeabilities of various hydrogels to water and various solutes (a) Water permeability at pressures less than 7 x 107 dyne/cm2 531 (1) = polyelectrolyte complex of poly-(sodium styrenesulfonate) (NaSS)-poly(4-vinylbenzyltrimethylammonium chloride) (PVBMA), (2) = crosslinked hydrogel of poly(2-hydroxyethyl methacrylate), (3) - cellulose (b) Dialytic permeability of a polyelectrolyte complex composed of NaSS-PVBMA to solutes with various molecular weights541 (1) Water, (2) neutral polyelectrolyte complex (water content = 70%), (3) anionic polyelectrolyte complex (water content = 61%), (4) cellophane and cuprophane (water content = 57%)... 

Ioplex = poly(sodium styrenesulfonate)-poly(4-vinylbenzyltrimethylammonium chloride) (0.5 0.5), PAA = poly(acrylic add), PEPP = polyethylenepiperazine, PMAEM = poly(2-N,N-dimethylaminoethyl methacrylate), GC = glycol chitosan, CSC = chondroitin sulfate, Hep = heparin,... 

Various combinations of the above are possible, for instance polyblends of materials from groups 2 and 3 or of a polycationic and a polyanionic material both from group 3. A special example of the latter is a stoichiometric blend of poly (sodium styrene sulfonate) and poly (vinylbenzyltrimethylammonium chloride) known as "polysalt which was recently studied by Gray (36). 

For example, vinyl monomer-montmorillonite intercalate (VM-MMT), able to swell and disperse in organic solvents, was prepared by exchanging the mineral cations of MMT by vinylbenzyltrimethylammonium chloride. The resulting VM-MMT material rendered the mineral organophilic and having polymerizable moieties directly bonded to the lamellar surface of the mineral. Radical polymerization of S between the interlayers of 5,10,25, and 50 wt % of VM-MMT... 

Starch xanthate can be methylated as well as acetylated.45 The first reaction is base-catalyzed and the second acid-catalyzed. Neither procedure decreases the DS of the modified xanthate. Cationization of starch xanthate occurs on reaction with the water-soluble poly(vinylbenzyltrimethylammonium) chloride.2157 Xanthates have been cyanoethylated to produce rubber mixes.2158 2159 Sulfonated products were made by reaction with sultones.2160... 

Copolymerization with other water-soluble monomers is also carried out in a similar manner. Cationic polyacrylamides are obtained by copolymerizing with ionic monomers such as dimethylami-noethyl methacrylate, dialkyldimethylammonium chloride, and vinylbenzyltrimethylammonium chloride. These impart a positive charge to the molecule. Anionic character can be imparted by copolymerizing with monomers such as acrylic acid, methacrylic acid, 2-acrylamido-2-methyl-propanesulfonic acid, and sodium styrene sulfonate. Partial hydrolysis of polyacrylamide, which converts some of the amide groups to carboxylate ion, also results in anionic polyacrylamides. 

The complexation of poly(sodium styrene sulfonate) and poly(4-vinylbenzyltrimethylammonium chloride) is easy to form (17) (49). By combining two water-based solutions of each polymer at equimolar concentration, the complex forms immediately as evident by the formation of white precipitate. Another example is the polyelectrolyte complexation of an amino group containing chitosan with the polymer sodium alginate (50). Sodium alginate also forms a strong complex through the association of calcium ions (51). 

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