Polyacrylamide derivatives

Besides such poly(amide-amine)s a polyacrylamide) derivative of structure 5 was also active. 

Boschetti, E. (1989). Polyacrylamide derivatives to the service of bioseparations. J. Biochem. Biophys. Methods 19, 21-36. 

Despite the disadvantage of smaller pore size than agarose, the bead form polyacrylamides have many of the features considered desirable in an affinity support. Thus Inman and Dintzis described the formation of a wide range of polyacrylamide derivatives [37]. The initial reactions involved the formation of aminoethyl, carboxylic or hydrazide deriva-... 

The use of polymers for the immobilization of enzymes and other bio-logically-active molecules has been discussed. The advantages of polymeric support materials and rules for their selection according to the type of use have been discussed. A review of various types of polymers which can serve as support matrices has been given. They are, e.g., polymeric carbohydrate derivatives, poly(allyl carbonate) and poly(allyl alcohol), polymers of acrylamidosalicylic acids, polyacrylamide derivatives, etc. Some examples of the use of immobilized enzymes and other biologically-active molecules were mentioned. 

This included small scale field trials with both CMC thickened water and polyacrylamide derivatives. Obviously the early stages on the learning curve didn t come cheaply. 

Low molecular weight polyacrylamide derivatives with mineral specific functionalities have been developed as highly selective depressants for separation of valuable minerals from gangue minerals in fi oth flotation processes. These depressants have certain ecological advantages over natural depressants such... 

The gel matrices that have been used in CGE include linear polyacrylamide, derivatives of cellulose, galactomannan, glucomannan, polyvinyl alcohol, polyethyleneoxide, agarose, dextran, polydimethylacrylamide, and polyacryloyletho yethanol. 

Shen, L. L. and Cao, X. J. (2007). Synthesis of thermo-sensitive polyacrylamide derivatives for affinity precipitation and its application in purification of lysozyme. Biochemical Engineering Journal, 33,66-71. 

A new type of model membrane for ion pumping exists as a membrane medium of a polyacrylamid derivate of ligand type. 

Cholesterol has also been coupled to polymer chain ends after other chemical modifications on its OH position. The most-reported method uses cholesteryl chloroformate (CholCl), which is commercially available, to react with OH or NH2 end-functionaMzed polymers (i.e., PEG [118, 119] and polyacrylamide derivatives [120, 121]). Quantitative functionalization can be achieved with either 1 equiv. or... 

The notion of a polyelectrolyte complex is well established for the mixture of two homopolymers one anionic, the other cationic. The complex formation is generally associated with a phase separation (often a precipitation) although water soluble polymeric complexes are known. Only few data are available when the charge density of the polyelectrolytes is progressively decreased. This situation is exemplified with a series of mixtures of polyacrylamide derivatives, one family of copolymers has various contents in anionic units, the other is similar but with cationic units. We found that even for a few percent in ionic units, the mixtures water/copolymer anionic/copolymer cationic phase separates a polymer rich phase (including the two types of copolymers) is in equilibrium with a very diluted polymer solution. 

MIY Miyazaki, FI. and Kataoka, K., Ffreparation of polyacrylamide derivatives showing thermo-reversible coacervate formation and their potential application to two-phase separation processes. Polymer, 37, 681,1996. 

Fig. 1 Repeating unit of polypeptides as compared with those of polyacrylamide derivatives...

Preparation of PNiPAM, other polyacrylamide derivatives and molecular weight fractionation PNiPAM and other polyacrylamide derivatives were prepared by conventional free-radical polymerization of purified monomer which was synthesized by the reaction of acrylic or methacrylic acid chloride with the equivalent amount of monoamine compound to give the corresponding N-substituted acryl- or methacryl-amide derivatives. Most of the polymers were fractionated from ca.1% dry acetone solution by n-hexane as the precipitant at room temperatures ),... 

Fig.11 Phase transition of polyacrylamide derivatives in aqueous solutions detected by DSC...

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