Poly ampholyte

AB diblock copolymers, 20 485-487 AB diblock poly ampholytes, 20 478 Abierixin, 20 132... 

Alternating sulfobetaine copolymers were reported for 27 with SO2 [76], by analogy with the carbobetaine analogues described above. A very different approach was chosen for the alternating copolymer poly(ampholyte-electrolyte) 37, by condensing sodium 3-(pyrrol-l-yl) propanesuhbnate with squaric acid [77]. 

Poly ampholytes, which contain both positively charged (basic) and negatively charged (acidic) groups. Well-known are the proteins, DNA, and RNA. 

When Curtius diVidLossen rearrangement reactions are attempted on poly(acryloyl chloride) [248], the products are fairly regular poly ampholytes ... 

Despite these apparent limitations, considerable success in the use of GPC as a quantitative means of studying the adsorption of a number of polycations (and poly ampholytes) on hair has recently been reported (75) ... 

Titrations of 0.0 lAf poly ampholyte in the presence of O.OIM nitric acid and ITif potassium nitrate were carried out vdth O.IAA potassium hydroxide solution. The dissociation constants were determined on the basis of the Henderson-Hasselbalch equation, as modified by Katchalsky and Spitnik [20], by measuring the pH as a function of the degree of neutralization a... 

Similar curves were obtained for racemic and L-polypropyleneglycine, PICEI and PEA. At high ligand concentration n approaches the limiting value of 2. Taking account of the presence of two coordinating atoms in each monomer unit, the coordination number four is thus found from the experimental data. Table IV summarizes the metal complex formation constants for the different poly ampholytes. The displacement constant B2 is defined by the equation... 

The complexation phenomena of the examined polyampholytes is strongly influenced by their structure on account of the stronger steric strain imposed to the polymer chain and probably to the presence of the iV-isopropyl group in PICEI its complexation properties are lower than for the other poly ampholytes. Stereoregular poly-L-iV-propyleneglycine behaves similarly to the DL-polymer the stereoregularity of the chain only slightly affects the complexation properties. 

Kudaibergenov, S. E. (2002). Poly ampholytes synthesis, characterization, and application. New York Kluwer Academic/Plenum Publishers. 

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