INVESTIGADORES
STRUMIA Miriam Cristina
artículos
Título:
Characterization of physicochemical properties ofperfluorodecanoic acid-polyquaternium cellulose hydrogel
Autor/es:
KARINA BIERBRAUER; ROXANA ALASINO; MIRIAM STRUMIA; DANTE BELTRAMO
Revista:
COLLOIDS AND SURFACES B-BIOINTERFACES
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2012 vol. 89 p. 23 - 28
ISSN:
0927-7765
Resumen:
We investigated the nature and stability of the interactions established between polyquaternium (PQ10)
and perfluorodecanoic acid (PFDA) in terms of different variables such as composition, ionic strength,
pH and temperature. The PQ10PFDA complex formation is interpreted in view of electrostatic associations
between carboxylic and quaternary amino group. The properties of the systems were characterized
by rheology analysis. The adhesive properties of complex were also assessed. One of the macroscopic
features of the new material formed in solution was the increase in viscosity from 6 Pa s for 1% PQ10
(MW 1.7 × 106 g mol−1) to about 1000 Pa s by the addition of enough PFDA to reach 1:0.5 ammonium:
carboxylic group molar ratio. At this proportion, PQ10 and PFDA form a network structure with
a maximum viscosity and storage modulus. This maximum coincides with an increased mucoadhesive
work.
carboxylic group molar ratio. At this proportion, PQ10 and PFDA form a network structure with
a maximum viscosity and storage modulus. This maximum coincides with an increased mucoadhesive
work.
carboxylic group molar ratio. At this proportion, PQ10 and PFDA form a network structure with
a maximum viscosity and storage modulus. This maximum coincides with an increased mucoadhesive
work.
× 106 g mol−1) to about 1000 Pa s by the addition of enough PFDA to reach 1:0.5 ammonium:
carboxylic group molar ratio. At this proportion, PQ10 and PFDA form a network structure with
a maximum viscosity and storage modulus. This maximum coincides with an increased mucoadhesive
work.