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Synthesis and Hydrophilic Performance of Poly(Lactic Acid)-Poly(Ethylene Glycol) Block Copolymers
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
Multidisciplinary Center for Advanced Materials, Shanghai University of Engineering Science, Shanghai, China
College of School of Automotive Engineering, Shanghai University of Engineering Science, Shanghai, China
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
- 1 College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
- 2 Multidisciplinary Center for Advanced Materials, Shanghai University of Engineering Science, Shanghai, China
- 3 College of School of Automotive Engineering, Shanghai University of Engineering Science, Shanghai, China
- 4 College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
- 5 College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
American Journal of Analytical Chemistry·Volume 07 (2016)·Pages 299–305·Published 4 March 2016·DOI10.4236/ajac.2016.73028
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Abstract
Lactide was synthesized using lactic acid and stannous octoate as raw material and catalyst, respectively. Poly(lactic acid)-poly(ethylene glycol) (PLA-PEG) was prepared by lactide and poly (ethylene glycol) (PEG) via ring-opening polymerization. The most appropriate technological conditions of synthesis of lactide were researched in the paper. The copolymers were measured by Infrared spectroscopy (IR) and 1 H nuclear magnetic resonance ( 1 H NMR). The results proved that the lactide and PLA-PEG were synthesized successfully. Hydrophilic performance of the copolymer was measured by a water contact angle tester after prepared into a flat membrane. The water contact angle changed from 81.5? to 71.6?, which proved that the hydrophily of PLA-PEG was better than PLA.
KeywordsLactidePoly(Lactic Acid)-Poly(Ethylene Glycol) (PLA-PEG)PrepareHydrophily
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