Guo, J., Mei, T., Li, Y., Hafezi, M., Lu, H., Li, J. and Dong, G. (2018) One-pot synthesis and lubricity of fluorescent carbon dots applied on PCL-PEG-PCL hydrogel. Journal of Biomaterials Science, Polymer Edition, 29(13), pp. 1549-1565. (doi: 10.1080/09205063.2018.1470736) (PMID:29862896)
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Abstract
This work presents a method for one-pot synthesis of N-doped nanometer-size carbon dots, which can be assembled with thermosensitive poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) (PCL-PEG-PCL, PCEC) hydrogel to achieve slow-release lubricity. The typical property of this green production was studied by fourier transform infrared (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscope (TEM). The photoluminescence of composite PCEC/CDs hydrogel and its released solutions were characterized by ultraviolet spectrum, and the rheological properties were tested by rotary rheometer. Tribological performance of the released solution from composite PCEC/CDs hydrogel was obtained to compare with PBS and pure CDs solution. The experimental results reveal that the CDs contain the chemical groups of N-H, C-OH/C-O-C and -COOH, etc. In addition, the diameter of the CDs is in the range of 6~8 nm. The phase transition behavior of PCEC/CDs hydrogel can be still kept and its viscoelasticity hydrogel is improved by approximatively 7%. Furthermore, friction coefficient of the released solution from composite PCEC/CDs hydrogel decreases by about 70% than that of PBS. Besides, the wear condition can be improved by a lubricating transfer film formed by released CDs. This novel strategy for slow-release application is valuable for drug delivery and bio-tribology.
| Item Type: | Articles |
|---|---|
| Additional Information: | This work was supported by National Natural Science Foundation of China [grant number 51475358]. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Hafezi, Dr Mahshid |
| Authors: | Guo, J., Mei, T., Li, Y., Hafezi, M., Lu, H., Li, J., and Dong, G. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Journal of Biomaterials Science, Polymer Edition |
| Publisher: | Taylor and Francis |
| ISSN: | 0920-5063 |
| ISSN (Online): | 1568-5624 |
| Published Online: | 04 June 2018 |
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