| Full text | |
| Author(s): |
Sabadini, Julia Bonesso
;
Oliveira, Cristiano Luis Pinto
;
Loh, Watson
Total Authors: 3
|
| Document type: | Journal article |
| Source: | Journal of Colloid and Interface Science; v. 678, p. 10-pg., 2024-09-03. |
| Abstract | |
Hypothesis: Ethoxylated complex coacervate core micelles (C3Ms), formed by the electrostatic coacervation of a charge-neutral diblock copolymer and an oppositely charged homopolymer, exhibit morphology governed by molecular packing principles. Additionally, this morphology is temperature-dependent, leading to transitions similar to those observed in classical ethoxylated surfactant aggregates. Experiments: To explore the thermal effects on the size and morphology of C3Ms, we employed dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), and cryogenic transmission electron microscopy (cryoTEM). These techniques were applied to C3Ms formed by copolymers with varying poly(ethylene oxide) (EO) lengths. Findings: Increasing the temperature-induced a transition from spherical to elongated aggregates, contingent on the EO block length. This morphological transition in EO-containing C3Ms parallels the behavior of classical ethoxylated surfactant aggregates. Despite the fundamental differences between hydrophobically driven and electrostatic coacervate micelles, our findings suggest that similar molecular packing principles are universally applicable across both systems. Our results offer valuable insights for predicting the structural properties of these coacervate platforms, which is crucial for envisioning their future applications. (AU) | |
| FAPESP's process: | 18/25041-5 - Evaluation of the equilibrium state and structure of coacervates formed by copolymers-in-block and oppositely charged polymers |
| Grantee: | Julia Bonesso Sabadini |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 21/12071-6 - Tailoring colloids through supramolecular interactions: from fundamentals to applications |
| Grantee: | Watson Loh |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/25406-5 - Organizing matter: colloids formed by association of surfactants, polymers and nanoparticles |
| Grantee: | Watson Loh |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 20/11735-5 - Polyelectrolyte micelles: characterization, properties and applications for enzymes encapsulation |
| Grantee: | Julia Bonesso Sabadini |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 21/11317-1 - Designing Rules for protein encapsulation into complex coacervate core micelles (C3M) |
| Grantee: | Julia Bonesso Sabadini |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |