Design of remotely, locally triggered shape-memory materials based on bicontinuous polylactide/epoxidized natural rubber thermoplastic vulcanizates via regulating the distribution of ferroferric oxide
Source abstract
Abstract
Abstract In this work, we successfully designed remotely, locally thermal/magnetic/light triggered shape memory biobased polylactide/epoxidized natural rubber thermoplastic vulcanizates (PLA/ENR TPVs) via regulating the distribution of ferriferrous oxide (Fe3O4). The TPVs exhibited novel bicontinuous structure, which played a vital role in shape memory effect (SME). The distribution of Fe3O4 in the TPVs was regulated by changing the feeding sequence of Fe3O4 during the dynamic vulcanization. Exhilaratingly, when Fe3O4 was selectively distributed in the ENR phase, the biobased TPVs exhibited the highest Rf (~99%) and Rr (>90%) even after five cycles because of the impeccable structure and reinforcement of ENR. Meanwhile, the TPVs also exhibited super-toughness (88.06 kJ/m2) without sacrificing its tensile strength. Moreover, the incorporation of Fe3O4 provided the TPVs with remotely/locally triggered SME, in which the TPVs could quickly recover to their initial shape in an alternating magnetic field or under near-infrared light (808 nm), which showed great potential in intelligent medical devices.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer composites and self-healing · Polydiacetylene-based materials and applications · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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