| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7901672 | Journal of Non-Crystalline Solids | 2015 | 6 Pages |
Abstract
Microgel particles composed of Interpenetrated Polymer Network (IPN) of poly(N-isopropylacrylamide) (PNIPAM) and poly(acrylic acid) (PAAc) dispersed in water have been investigated through dynamic light scattering. The study of the temperature, concentration and pH dependence of the relaxation time has highlighted the existence of a thermoreversible transition corresponding to the swollen-shrunken volume phase transition. The presence of PAAc introduces an additional pH-sensitivity with respect to the temperature-sensitivity due to PNIPAM and leads to interesting differences in the transition process at acid and neutral pH.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Valentina Nigro, Roberta Angelini, Monica Bertoldo, Valter Castelvetro, Giancarlo Ruocco, Barbara Ruzicka,