| Full text | |
| Author(s): |
Marques Marcilli, Raphael Henrique
[1]
;
Rodrigues Camilo, Ana Paula
[1]
;
Petzhold, Cesar Liberato
[2]
;
Felisberti, Maria Isabel
[1]
Total Authors: 4
|
| Affiliation: | [1] Univ Estadual Campinas, Inst Chem, POB 6154, BR-13083970 Campinas, SP - Brazil
[2] Univ Fed Rio Grande do Sul, Inst Chem, PO 15003, BR-91501970 Porto Alegre, RS - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | JOURNAL OF MOLECULAR LIQUIDS; v. 266, p. 628-639, SEP 15 2018. |
| Web of Science Citations: | 1 |
| Abstract | |
Diblock copolymers based on methyl methacrylate and sucrose methacrylate were synthesized by Reversible Addition-Fragmentation Chain Transfer (RAFT) polymerization and characterized by C-13 and H-1 nuclear magnetic resonance and size exclusion chromatography. The copolymers solutions were investigated in terms of solubility, swelling tests and dynamic light scattering in different solvents. Copolymers containing from 5 to 35 mol% of hydrophilic monomer present a typical solubility behavior of amphiphilic polymers and self-assemble capability in solution. While poly(sucrose methacrylate) is water soluble, copolymers self-assemble in water and the highest molar mass copolymers swell, achieving a maximum water swelling ratio of 250%. SEM images of the aggregates formed in water after freeze-drying reveal the presence of monomodal and spherical particles, some of them exhibiting a vesicular structure. The copolymers efficiently promote emulsification of aromatic solvents in water, enabling the transference and stabilization of the aromatic solvent and an aromatic dye in the aqueous phase, suggesting a possible application as delivery systems. Moreover, films of the copolymers prepared by casting from solutions in different solvents are also capable to self-assemble forming mainly lamellar structures, as verified by SAXS. The morphology of dispersed spheres of poly(sucrose methacrylate) throughout a poly(methyl methacrylate) matrix is also observed by AFM and TEM. (C) 2018 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 10/17804-7 - Polymeric composites |
| Grantee: | Maria Isabel Felisberti |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/03394-8 - Synthesis of amphiphilic and block copolymers via RAFT and ATRP |
| Grantee: | Maria Isabel Felisberti |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - Brazil |
| 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 |