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

E. Read; B. Lonetti; S. Gineste; A. T. Sutton; E. Di Cola; P. Castignolles; M. Gaborieau; A.-F. Mingotaud; M. Destarac; J.-D. Marty

doi:10.1016/j.jcis.2021.01.028

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

E. Read, B. Lonetti, S. Gineste, A. T. Sutton, E. Di Cola, P. Castignolles, M. Gaborieau, A.-F. Mingotaud, M. Destarac, J.-D. Marty

Western Sydney University

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Hypothesis: 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. Experiments: 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. Findings: 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.

Original language	English
Pages (from-to)	268-276
Number of pages	9
Journal	Journal of Colloid and Interface Science
Volume	590
DOIs	https://doi.org/10.1016/j.jcis.2021.01.028
Publication status	Published - 15 May 2021

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© 2021 Elsevier Inc.

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Read, E., Lonetti, B., Gineste, S., Sutton, A. T., Di Cola, E., Castignolles, P., Gaborieau, M., Mingotaud, A.-F., Destarac, M., & Marty, J.-D. (2021). Mechanistic insights into the formation of polyion complex aggregates from cationic thermoresponsive diblock copolymers. Journal of Colloid and Interface Science, 590, 268-276. https://doi.org/10.1016/j.jcis.2021.01.028

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title = "Mechanistic insights into the formation of polyion complex aggregates from cationic thermoresponsive diblock copolymers",

abstract = "Hypothesis: 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. Experiments: 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. Findings: 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.",

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year = "2021",

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doi = "10.1016/j.jcis.2021.01.028",

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T1 - Mechanistic insights into the formation of polyion complex aggregates from cationic thermoresponsive diblock copolymers

AU - Read, E.

AU - Lonetti, B.

AU - Gineste, S.

AU - Sutton, A. T.

AU - Di Cola, E.

AU - Castignolles, P.

AU - Gaborieau, M.

AU - Mingotaud, A.-F.

AU - Destarac, M.

AU - Marty, J.-D.

PY - 2021/5/15

Y1 - 2021/5/15

N2 - Hypothesis: 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. Experiments: 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. Findings: 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.

AB - Hypothesis: 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. Experiments: 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. Findings: 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.

UR - https://hdl.handle.net/1959.7/uws:60684

U2 - 10.1016/j.jcis.2021.01.028

DO - 10.1016/j.jcis.2021.01.028

M3 - Article

SN - 0021-9797

VL - 590

SP - 268

EP - 276

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

ER -

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

Abstract

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