0000000000256064
AUTHOR
Kanji Kajiwara
showing 2 related works from this author
Structural Characterization of Glycoconjugate Polystyrene in Aqueous Solution
1999
Maltopentaose-carrying polystyrene was synthesized by the homopolymerization of vinylbenzyl maltopentaose amide. Resulted amphiphilc polymacromonomer was dissolved in 0.1 M urea aqueous solution, and its structure was characterized by small-angle X-ray scattering and molecular modeling. Maltopentaose-carrying polystyrene polymacromonomer was found to be represented by a molecular bottlebrush, composed of a large helix of polystyrene backbone and maltopentaose brushes. The molecular bottlebrush seems to be distributed randomly or many even be broken once or twice in segments with no apparent intersegmental spatial correlation. A large helix of polystyrene backbone is formed by a random seque…
Conformational analysis of α,β-poly(N-hydroxyethyl)-dl-aspartamide (PHEA) and α,β-polyasparthydrazide (PAHy) polymers in aqueous solution
1998
Abstract α,β-Poly(N-hydroxyethyl)- dl -aspartamide (PHEA) and α,β-polyasparthydrazide (PAHy) are synthetic polymers previously studied for biomedical applications. We report here the results of a small-angle X-ray scattering analysis carried out on these two macromolecules in aqueous solution. The data obtained indicate that the two polymers assume remarkably different conformations in aqueous solution, although the backbone is supposed to be the same for the two chains. PHEA can be represented by a random coil conformation, whereas PAHy can be described in terms of an elliptical cylinder characterized by an almost planar structural arrangement with the backbone refolded on itself in a fash…