Controlled tuning of LCST based on poly (N-isopropylacrylamide)/Hydroxypropyl cellulose temperature-sensitive hydrogel by electron beam pre-radiation method
| Autor: | Hua Zheng, Jiang-Tao Qin, Xianglin Zeng, Yi Liu, Yue-Sheng Li, Xiang‐Xiang Xia, Ya-qiong Huang, Renhuo Hu, Huaxi Bao, Yan Han, Zhi-Bing Dong |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Nanocomposite
Materials science Polymers and Plastics Hydroxypropyl cellulose Organic Chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Lower critical solution temperature 0104 chemical sciences Nanomaterials chemistry.chemical_compound chemistry Chemical engineering Materials Chemistry Poly(N-isopropylacrylamide) Fourier transform infrared spectroscopy 0210 nano-technology Prepolymer |
| Zdroj: | Journal of Polymer Research. 25 |
| ISSN: | 1572-8935 1022-9760 |
| DOI: | 10.1007/s10965-017-1398-x |
| Popis: | As a temperature-sensitive-discoloration hydrogel based on NIPAAm/HHPC was fabricated via two steps of electron beam radiation. Small nanomaterial such as GO and Fe2O3 were also added severally into the system of hydrogel as chromogenic agent. Different colors can be displayed in nanocomposite hydrogel system at the low, medium and high temperature respectively. The LCST of hydrogel system can be also adjusted precisely by the changes of irradiation dose of the prepolymer and composition ratio. Experimental results showed that the hydrogel can be changed quickly itself color in its near LCST. The microstructure and composition of nanocomposite hydrogel were characterized further by NMR, FTIR, TG, DSC, XRD, FE-SEM and XPS so as to reveal the mechanism of temperature-sensitive- discoloration. The novel NIPAAm/HHPC-based nanocomposite hydrogel is suitable especially to indicate different fever temperatures for fever patients and can be expected to as a new type of temperature-sensitive sensor and replace the traditional clinical thermometer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink