Realizing a shape-memory effect for synthetic rubber (IR)
| Autor: | Joerg C. Tiller, Frank Katzenberg, Dominik Segiet, Laura Maria Neuendorf |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Melting temperature Organic Chemistry 02 engineering and technology Shape-memory alloy 010402 general chemistry 021001 nanoscience & nanotechnology Biocompatible material 01 natural sciences Synthetic rubber 0104 chemical sciences chemistry.chemical_compound Chemical engineering chemistry Materials Chemistry Stearic acid 0210 nano-technology Amphiphilic copolymer |
| Zdroj: | Polymer. 203:122788 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2020.122788 |
| Popis: | In this work, two different approaches were followed to realize a shape-memory effect for synthetic rubber (IR). Firstly, we explored the influence of stearic acid (StA) on the shape-memory effect (SME) of IR. It was found that small concentrations of StA cause an intrinsic’ shape-memory effect of IR by significantly increasing the melting temperature of the strain-induced crystals. Secondly, we blended IR with the biocompatible poly(2-ethyl-2-oxazoline) (PEtOx) prior to crosslinking. We obtained an ‘extrinsic’ SME with trigger temperature well above room temperature. Moreover, the prepared IR/PEtOx networks showed characteristics of an amphiphilic polymer conetwork. Both methods were found to be capable of making IR a protein-free and efficient, and in the case of IR/PEtOx also water-triggerable SMP that can be applied for biomedical purposes. |
| Databáze: | OpenAIRE |
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