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Study of magnetic field influence upon a binary interpenetrated polymeric complex formation

L. E. NITA1,* , A. P. CHIRIAC1, I. NEAMTU1

Affiliation

  1. “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, no. 41-A, 700487 Iasi, Romania

Abstract

The paper is focused on the study of magnetic field (MF) influence during the preparation of an intermolecular complex (IPC) between poly(aspartic acid) – (PAS) and poly(vinyl alcohol) – (PVA). The MF influence during interpolymer complexation process between PAS and PVA was appreciated by zeta potential values of the prepared polymeric structure, as well as by evaluation of the pH influence on zeta potential, hydrodynamic diameter and electrical conductivity of the prepared nanoparticles. The MF presence during the IPC formation shows a positive effect upon colloidal stability, evidenced by the increase of the absolute value of zeta potential. Also, the dependence of zeta potential on the solution pH indicates – on the entire studied pH range – higher modulus for ζ of the IPC formed in the MF presence evidencing higher colloidal stability for these structures. The prepared IPC maintains its dimensional stability – evaluated by hydrodynamic diameter – in the pH range of 5.5 to 12, even in the MF presence. At the same time, the MF presence determines the decrease of the conductivity for either pure polymers or preformed IPC..

Keywords

Polymeric complex, Magnetic field, Zeta potential, Colloid.

Submitted at: Sept. 1, 2008
Accepted at: Nov. 11, 2008

Citation

L. E. NITA, A. P. CHIRIAC, I. NEAMTU, Study of magnetic field influence upon a binary interpenetrated polymeric complex formation, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 11, pp. 2902-2907 (2008)