ArticlePolymers2022
Characterization of Polyurethane Shape Memory Polymer and Determination of Shape Fixity and Shape Recovery in Subsequent Thermomechanical Cycles.
Article in Polymers, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed.
- Torque expression in directly printed and thermoformed clear aligners: a controlled in vitro biomechanical comparison of power ridge effects.Progress in orthodontics · 2026Article
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- A Sharp Phase Transition Polymer for High Spatial Selectivity in Microtransfer Printing.ACS applied polymer materials · 2025Article
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- A Novel Natural Chromogenic Visual and Luminescent Sensor Platform for Multi-Target Analysis in Strawberries and Shape Memory Applications.Foods (Basel, Switzerland) · 2025Article
- Shape Memory Elastomers: A Review of Molecular Structures, Stimulus Mechanisms, and Emerging Applications.Polymer science & technology (Washington, D.C.) · 2025Review
- 4D printing polymeric biomaterials for adaptive tissue regeneration.Bioactive materials · 2025Review
- Shape Memory Performance and Microstructural Evolution in PLA/PEG Blends: Role of Plasticizer Content and Molecular Weight.Polymers · 2025Article
- NIR-induced photothermal-responsive shape memory polyurethane for versatile smart material applications.RSC advances · 2024Review
- Enhancing Tensile Modulus of Polyurethane-Based Shape Memory Polymers for Wound Closure Applications through the Addition of Palm Oil.Polymers · 2024Article
- Nucleation, Development and Healing of Micro-Cracks in Shape Memory Polyurethane Subjected to Subsequent Tension Cycles.Polymers · 2024Article
- Thermo-Mechanical Behavior and Strain Rate Sensitivity of 3D-Printed Polylactic Acid (PLA) below Glass Transition Temperature (TPolymers · 2024Article
- Article
- Investigation of Shape Memory Polyurethane Properties in Cold Programming Process Towards Its Applications.Polymers · 2024Article
- Multifaceted Shape Memory Polymer Technology for Biomedical Application: Combining Self-Softening and Stretchability Properties.Polymers · 2023Article
- Heat-Induced Actuator Fibers: Starch-Containing Biopolyamide Composites for Functional Textiles.ACS applied materials & interfaces · 2023Article
- Article
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7 authors.
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Abstract
Multifunctional polyurethane shape memory polymers (PU-SMPs) have been of increasing interest in various applications. Here we report structure characterization, detailed methodology, and obtained results on the identification of functional properties of a thermoset PU-SMP (MP4510) with glass transition temperature of 45 °C. The stable, chemically crosslinked network of this thermoset PU-SMP results in excellent shape memory behavior. Moreover, the proximity of the activation temperature range of this smart polymer to room and body temperature enables the PU-SMP to be used in more critical industrial applications, namely fast-response actuators. The thermomechanical behavior of a shape memory polymer determines the engineering applications of the material. Therefore, investigation of the shape memory behavior of this class of commercial PU-SMP is of particular importance. The conducted structural characterization confirms its shape memory properties. The shape fixity and shape recovery properties were determined by a modified experimental approach, considering the polymer's sensitivity to external conditions, i.e., the temperature and humidity variations. Three thermomechanical cycles were considered and the methodology used is described in detail. The obtained shape fixity ratio of the PU-SMP was approximately 98% and did not change significantly in the subsequent cycles of the thermomechanical loading due to the stability of chemical crosslinks in the thermoset materials structure. The shape recovery was found to be approximately 90% in the first cycle and reached a value higher than 99% in the third cycle. The results confirm the effect of the thermomechanical training on the improvement of the PU-SMP shape recovery after the first thermomechanical cycle as well as the effect of thermoset material stability on the repeatability of the shape memory parameters quantities.
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