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TY  - THES
AU  - Selezneva, Elizaveta
TI  - Photon energy provision for shape memory induced self-healing polymers
PB  - RWTH Aachen University
VL  - Dissertation
CY  - Aachen
M1  - RWTH-2025-06242
SP  - 1 Online-Ressource : Illustrationen
PY  - 2024
N1  - Veröffentlicht auf dem Publikationsserver der RWTH Aachen University 2025
N1  - Dissertation, RWTH Aachen University, 2024
AB  - This research focuses on self-healing polymer materials, addressing challenges, such as large-scale defect repair. We introduce ionomer–rubber blends, featuring three types of cross-links: covalent links within a rubber network, ionic group clusters, and crystalline domains in the ionomer. Self-healing relies on two structural memory types tied to deformation and defect-induced stresses. After damage macroscopic shape memory effects come into play, mending larger-scale fractures with annealing at elevated temperatures. At the same time reorganization of ionic clusters facilitates microscopic healing of defects ranging from millimeters to centimeters. The study also explores the production and photothermal healing of hybrid films, using a self-healing rubber-ionomer blend with plasmonic nanoparticles. Through co-precipitation and hot pressing, we create versatile optical imprint composite materials. Effective plasmonic filler concentrations are established, enabling rapid photothermal repair of scratches and damages while preserving the sample's shape. Self-healing ionomer and metal fiber composites were prepared through various methods, evaluating percolation thresholds and corrosion resistance. We achieve homogeneous fiber distribution, confirm self-healing through induction heating, and leverage metal fibers magnetic properties. Described materials can repair damage at both small and large scales, demonstrating the potential for enhancing the durability of composite materials in various applications. Additionally, the study explores the use of plasmonic nanoparticles and fiber fillers for non-invasive heating, which can further trigger the self-healing process and broaden the scope of potential applications in areas such as electronic equipment shielding and stealth technology.
LB  - PUB:(DE-HGF)11
DO  - DOI:10.18154/RWTH-2025-06242
UR  - https://publications.rwth-aachen.de/record/1015181
ER  -