Producción CyT
Artículo
Autoría
Mateos, Ailín
;
Casado, Ulises
;
Ceolín, Marcelo
;
Zucchi, Ileana A.
;
SCHROEDER, WALTER FABIAN
Fecha
2026
Editorial y Lugar de Edición
American Chemical Society
Revista
ACS Applied Polymer Materials
- ISSN 2637-6105
American Chemical Society
American Chemical Society
ISSN
2637-6105
Resumen
Información suministrada por el agente en
SIGEVA
Owing to their ability to undergo programmable shape transformations, multiple-shape memory materials are emerging as key candidates for next-generation high-tech applications, ranging from soft robotics to adaptive devices. Despite their potential, achieving systems with multiple, well-defined switching transitions remains challenging due to the stringent requirements on material architecture. In this work, we demonstrate a simple and versatile approach to create triple-shape memory systems th...
Owing to their ability to undergo programmable shape transformations, multiple-shape memory materials are emerging as key candidates for next-generation high-tech applications, ranging from soft robotics to adaptive devices. Despite their potential, achieving systems with multiple, well-defined switching transitions remains challenging due to the stringent requirements on material architecture. In this work, we demonstrate a simple and versatile approach to create triple-shape memory systems through elongated crystalline micelles that percolate to form a three-dimensional network within a crosslinked polymer matrix. This hierarchical architecture enables two distinct, thermally activated switching transitions—melting of the crystalline network and the glass transition of the matrix—offering precise control over shape programming and recovery. The elongated micelles were obtained through crystallization-driven self-assembly (CDSA) of a poly(ethylene-block-ethylene oxide) (PE-b-PEO) diblock copolymer in an epoxy monomer based on diglycidyl ether of bisphenol A (DGEBA). The exceptionally high aspect ratio of these nanostructures facilitates their percolation, leading to the formation of a micellar network that immobilizes the epoxy monomer into a physical gel. Subsequent photopolymerization of the epoxy monomer at room temperature allowed us to obtain the crosslinked matrix preserving the structure of the micellar network. By adjusting the PE-b-PEO content, the relative position of the two thermal transitions can be effectively tuned, resulting in materials with distinct triple-shape memory performances. The origin of these differences is discussed in light of in situ small- and wide-angle X-ray scattering (SAXS and WAXS) results.
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Palabras Clave
EPOXY THERMOSETSBLOCK COPOLYMER MICELLESSTRUCTURE–PROPERTY RELATIONSHIPSCRYSTALLIZATION-DRIVEN SELF-ASSEMBLYTRIPLE-SHAPE MEMORY POLYMERSMICELLAR NETWORKS