Formation of Alginate/Chitosan Interpenetrated Networks Revealed by EPR Spectroscopy.

ABSTRACT: This study analyzes the physico-chemical properties of interpenetrated polymer networks (IPNs) and semi-IPN resulting from cross-linking chitosan with glutaraldehyde and alginate with Ca²⁺ cations, as a function of the order in which the cross-linking agents are added to the polymer mixture. Three physico-chemical methods were used to assess the differences between systems: rheology, IR spectroscopy, and electron paramagnetic resonance (EPR) spectroscopy. While rheology and IR spectroscopy are commonly used to characterize gel materials, EPR spectroscopy is rarely used, but has the advantage of providing local information about the dynamics of a system. The rheological parameters, which describe the global behavior of the samples, show that semi-IPN systems have a weaker gel beh

SUBMITTER: Joly JP 

PROVIDER: S-EPMC10048464 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature