Materials Reports  2020, Vol. 34 Issue (Z2): 516-520 |
| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Synthesis and Properties of Temperature Sensitive Water-soluble Polymer with CO2 Regulated LCST |
| WANG Yu, ZHAO Jun, REN Junpeng, ZHOU Jinkang, LI Xiaoping
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| School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, China |
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Abstract P(N-isopropyl acrylamide-co-vinylamine) (P(NIPAM-VAm) was obtained from the hydrolization of P(N-isopropyl acrylamide-co-N-vinylformamide) (P(NIPAM-NVF) which was synthesized by solution free radical polymerization of N-isopropyl acrylamide (NIPAM) and N-vinylformamide (NVF), using ammonium persulfate and sodium hydrogen sulfite as initiator. Fourier transform infrared spectrometer (FTIR), nuclear magnetic resonance spectroscopy (1H-NMR) and gel permeation chromatography (GPC) were applied to character the structure, composition and molecular weight of the resultant polymers. The phase transition behavior of the resultant P(NIPAM-VAm) was evaluated by UV-Vis spectroscopy and differential scanning calorimeter (DCS). Experimental results showed that P(NIPAM-VAm) has low critical solution temperature (LCST) which could be controlled by adjusting the molar ration of NIPAM to NVF in the P(NIPAM-VAm) and the concentration of the solution. Moreover, LCST of P(NIPAM-VAm) solution could be tuned by bubbling CO2 into the system. LCST of P(NIPAM-VAm) solution has reversible response to CO2 and N2 switching.
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Published: 08 January 2021
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| Fund:This work was financially supported by the Natural Science Foundation of Guizhou Province (J20181122, J20191252), the National Natural Science Foundation of China (21464005), the Youth Science and Technology Talent Development Project of the Education Department of Guizhou Province (KY2018263). |
| About author:: Yu Wang received his Ph.D. degree in polymer che-mistry and physics from Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences in 2011. Currently he is a professor at Guizhou Education University. His research interests focus on the design and synthesis of novel stimuli-responsive nanocomposite hydrogels, solution polymer materials and their applications in environmental catalysis and water treatment. He has published more than 50 journal papers, applied 15 national invention patents and 5 of them were authorized. |
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