| Content Provider | MDPI |
|---|---|
| Author | Fu, Shuqin Ren, Huanhuan Ge, Zaochuan Zhuo, Haitao Chen, Shaojun |
| Abstract | This work aimed at elucidating the influence of zwitterionic hard segments on the structures and properties of shape memory polyurethanes (SMPUs). A series of zwitterionic SMPUs was successfully prepared with N-methyldiethanolamine (MDEA), 1,3-propanesultone (1,3-PS), 1,6-hexamethylene diisocyanate (HDI) and polyethylene glycol (PEG6000). The influence of MDEA-PS-based zwitterionic hard segment on structure, morphology, thermal property, shape memory property and cytocompatibility were systematically investigated. The results demonstrated that the PEG-based zwitterionic SMPUs (PEG-ZSMPUs) formed phase separation structure consisting of crystalline soft phase and amorphous hard phase. The MDEA-PS zwitterionic segments showed a tendency to form ionic clusters in hard segments, which served as reinforced net points. Shape memory analysis showed that zwitterionic PEG-ZSMPUs containing a high content of zwitterionic segments had thermal-induced shape memory effects. Finally, cytotoxic assays demonstrated that MDEA-PS zwitterionic segment improved the biocompatibility of PEG-ZSMPUs. The zwitterionic PEG-ZSMPUs could thus have a promising application in smart biomedical fields. |
| File Size | 8275968 |
| File Format | |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym9100465 |
| Journal | Polymers |
| Issue Number | 10 |
| Volume Number | 9 |
| Language | English |
| Publisher Date | 2017-09-21 |
| Access Restriction | Open |
| Subject Keyword | shape memory polyurethane N-methyldiethanolamine zwitterionic polymer biocompatibility |
| Content Type | Text |
| Resource Type | Article |
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