Research output: Contribution to journal › Article › peer-review
Molecular properties of modified chitosan containing a quaternary amino group. / Yevlampieva, N. P.; Gorshkova, M. Yu; Volkova, I. F.; Grigoryan, E. S.; Lezov, A. A.; Khurchak, A. P.; Ryumtsev, E. I.
In: Polymer Science - Series A, Vol. 53, No. 2, 02.2011, p. 124-132.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Molecular properties of modified chitosan containing a quaternary amino group
AU - Yevlampieva, N. P.
AU - Gorshkova, M. Yu
AU - Volkova, I. F.
AU - Grigoryan, E. S.
AU - Lezov, A. A.
AU - Khurchak, A. P.
AU - Ryumtsev, E. I.
PY - 2011/2
Y1 - 2011/2
N2 - A homologous series of the chitosan derivative N-[(2-hydroxy-3- trimethylammonium)pro-pyl]chitosan in a 0.33 M CH3COOH + 0.2 M CH3COONa mixture is studied via viscometry and static and dynamic light scattering. The molecular masses of the homologous series are determined, and the scaling relationships for the intrinsic viscosity, translational- diffusion coefficient, and hydrodynamic radius of molecules are derived. For the mentioned polymer-solvent system, the mean hydrodynamic invariant is estimated as A 0 = (3.4 ± 0.1) × 10-15 kg m 2/(s2 deg mol1/3). The equilibrium thermodynamic rigidity of modified chitosan chains is found to be 20 ± 2 nm. This value, like the parameters of the scaling relationships, suggests that the chitosan derivative under investigation belongs to the class of rigid-chain polymers. It is shown that, in the selected mixed solvent, the molecules of the modified chitosan are more compact than molecules of its nonmodified analog having close degrees of polymerization.
AB - A homologous series of the chitosan derivative N-[(2-hydroxy-3- trimethylammonium)pro-pyl]chitosan in a 0.33 M CH3COOH + 0.2 M CH3COONa mixture is studied via viscometry and static and dynamic light scattering. The molecular masses of the homologous series are determined, and the scaling relationships for the intrinsic viscosity, translational- diffusion coefficient, and hydrodynamic radius of molecules are derived. For the mentioned polymer-solvent system, the mean hydrodynamic invariant is estimated as A 0 = (3.4 ± 0.1) × 10-15 kg m 2/(s2 deg mol1/3). The equilibrium thermodynamic rigidity of modified chitosan chains is found to be 20 ± 2 nm. This value, like the parameters of the scaling relationships, suggests that the chitosan derivative under investigation belongs to the class of rigid-chain polymers. It is shown that, in the selected mixed solvent, the molecules of the modified chitosan are more compact than molecules of its nonmodified analog having close degrees of polymerization.
UR - http://www.scopus.com/inward/record.url?scp=79953877815&partnerID=8YFLogxK
U2 - 10.1134/S0965545X11020039
DO - 10.1134/S0965545X11020039
M3 - Article
VL - 53
SP - 124
EP - 132
JO - Polymer Science - Series A
JF - Polymer Science - Series A
SN - 0965-545X
IS - 2
ER -
ID: 5144762