Mechanistic insights into the formation of polyion complex aggregates from cationic thermoresponsive diblock copolymers.

Capillary electrophoresis Double hydrophilic block copolymers Dynamic light scattering Nuclear magnetic resonance spectroscopy Polyion complexes Small-angle X-ray scattering Thermoresponsive polymers

Journal

Journal of colloid and interface science
ISSN: 1095-7103
Titre abrégé: J Colloid Interface Sci
Pays: United States
ID NLM: 0043125

Informations de publication

Date de publication:
15 May 2021
Historique:
received: 11 10 2020
revised: 11 12 2020
accepted: 10 01 2021
pubmed: 7 2 2021
medline: 7 2 2021
entrez: 6 2 2021
Statut: ppublish

Résumé

The formation of polyion complexes (PICs) comprising thermoresponsive polymers is intended to result in the formation of aggregates that undergo significant structural changes with temperature. Moreover the observed modifications might be critically affected by polymer structure and PICs composition. Different block copolymers based on cationic poly(3-acrylamidopropyltrimethylammonium chloride) and thermoresponsive poly(N-isopropylacrylamide) were synthesized by aqueous RAFT/MADIX polymerization at room temperature. Addition of poly(acrylic acid) in a controlled fashion led to the formation of PICs aggregates. The structural changes induced by temperature were characterized by differential scanning calorimetry, Nuclear Magnetic Resonance spectroscopy and scattering methods. Thermoresponsive PICs undergo significant structural changes when increasing temperature above the cloud point of the thermoresponsive block. The reversibility of these phenomena depends strongly on the structural parameters of the block copolymers and on PICs composition.

Identifiants

DOI: 10.1016/j.jcis.2021.01.028 PMID: 33548610
pubmed: 33548610
pii: S0021-9797(21)00032-1
doi: 10.1016/j.jcis.2021.01.028
pii:
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

268-276

Informations de copyright

Copyright © 2021 Elsevier Inc. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Auteurs

E Read (E)

Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.

B Lonetti (B)

Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.

S Gineste (S)

Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.

A T Sutton (AT)

Western Sydney University, ACROSS, School of Science, Locked Bag 1797, Penrith, NSW 2751, Australia; Future Industries Institute, University of South Australia, P.O. Box 2471, Adelaide, South Australia 5001, Australia.

E Di Cola (E)

SAS-analysis, Saint Egreve, France.

P Castignolles (P)

Western Sydney University, ACROSS, School of Science, Locked Bag 1797, Penrith, NSW 2751, Australia.

M Gaborieau (M)

Western Sydney University, ACROSS, School of Science, Locked Bag 1797, Penrith, NSW 2751, Australia.

A-F Mingotaud (AF)

Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.

M Destarac (M)

Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France. Electronic address: destarac@chimie.ups-tlse.fr.

J-D Marty (JD)

Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France. Electronic address: marty@chimie.ups-tlse.fr.

Classifications MeSH