Chemical-Physical Behaviour of Microgels Made of Interpenetrating Polymer Networks of PNIPAM and Poly(acrylic Acid).
Dynamic Light Scattering
PNIPAM
Raman spectroscopy
Small Angle Neutron Scattering
colloids
interpenetrated
microgels
poly(acrylic acid)
rheology
soft matter
Journal
Polymers
ISSN: 2073-4360
Titre abrégé: Polymers (Basel)
Pays: Switzerland
ID NLM: 101545357
Informations de publication
Date de publication:
21 Apr 2021
21 Apr 2021
Historique:
received:
26
02
2021
revised:
01
04
2021
accepted:
13
04
2021
entrez:
30
4
2021
pubmed:
1
5
2021
medline:
1
5
2021
Statut:
epublish
Résumé
Microgels composed of stimuli responsive polymers have attracted worthwhile interest as model colloids for theorethical and experimental studies and for nanotechnological applications. A deep knowledge of their behaviour is fundamental for the design of new materials. Here we report the current understanding of a dual responsive microgel composed of poly(N-isopropylacrylamide) (PNIPAM), a temperature sensitive polymer, and poly(acrylic acid) (PAAc), a pH sensitive polymer, at different temperatures, PAAc contents, concentrations, solvents and pH. The combination of multiple techniques as Dynamic Light Scattering (DLS), Raman spectroscopy, Small Angle Neutron Scattering (SANS), rheology and electrophoretic measurements allow to investigate the hydrodynamic radius behaviour across the typical Volume Phase Transition (VPT), the involved molecular mechanism and the internal particle structure together with the viscoelastic properties and the role of ionic charge in the aggregation phenomena.
Identifiants
pubmed: 33919087
pii: polym13091353
doi: 10.3390/polym13091353
pmc: PMC8122350
pii:
doi:
Types de publication
Journal Article
Review
Langues
eng
Subventions
Organisme : European Research Council
ID : 681597
Pays : International
Organisme : Ministero dell'Istruzione, dell'Università e della Ricerca
ID : FARE SOFTART R16XLE2X3L
Organisme : Regione Lazio
ID : GELARTE n.prot.85-2017-15290
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