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Open AccessArticle

Synthesis of Thermo-Responsive Block-Graft Copolymer Based on PCL and PEG Analogs, and Preparation of Hydrogel via Click Chemistry

Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
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Polymers 2019, 11(5), 765; https://doi.org/10.3390/polym11050765
Received: 13 March 2019 / Revised: 10 April 2019 / Accepted: 20 April 2019 / Published: 1 May 2019
Thermo-responsive cross-linkable mPEG-b-[PCL-g-(MEO2MA-co-OEGMA)]-b-mPEG was synthesized by ring-opening polymerization (ROP) and atom transfer radical polymerization (ATRP). Then, the cross-linkable block-graft copolymer was used to prepare hydrogel via a copper-catalyzed 1,3-dipolar azide-alkyne cycloaddition reaction. The chemical structure and composition of copolymer were characterized by proton nuclear magnetic resonance (1H NMR), Fourier-transform infrared (FT-IR) and gel permeation chromatography (GPC). The self-assembly behaviors of the copolymer in aqueous solution were studied by UV spectrophotometer, fluorescence probes, the surface tension method, dynamic light scattering, and transmission electron microscopy. The results proved that the copolymer has excellent solubility and better temperature response. The three-dimensional network structure of the gels, observed by scanning electron microscopy at different temperatures, indicated that the gels have temperature response. View Full-Text
Keywords: ε-Caprolactone; block-graft copolymer; click chemistry hydrogel ε-Caprolactone; block-graft copolymer; click chemistry hydrogel
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MDPI and ACS Style

Shang, P.; Wu, J.; Shi, X.; Wang, Z.; Song, F.; Liu, S. Synthesis of Thermo-Responsive Block-Graft Copolymer Based on PCL and PEG Analogs, and Preparation of Hydrogel via Click Chemistry. Polymers 2019, 11, 765. https://doi.org/10.3390/polym11050765

AMA Style

Shang P, Wu J, Shi X, Wang Z, Song F, Liu S. Synthesis of Thermo-Responsive Block-Graft Copolymer Based on PCL and PEG Analogs, and Preparation of Hydrogel via Click Chemistry. Polymers. 2019; 11(5):765. https://doi.org/10.3390/polym11050765

Chicago/Turabian Style

Shang, Pei; Wu, Jie; Shi, Xiaoyu; Wang, Zhidan; Song, Fei; Liu, Shouxin. 2019. "Synthesis of Thermo-Responsive Block-Graft Copolymer Based on PCL and PEG Analogs, and Preparation of Hydrogel via Click Chemistry" Polymers 11, no. 5: 765. https://doi.org/10.3390/polym11050765

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