Author(s)

Gang Xu^1,2, Sihao Chen^1,2*, Xiao Yan^2,3, Chunyu Yang^1,2, Zhichang Chen^1,2

¹College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China.
²Multidisciplinary Center for Advanced Materials, Shanghai University of Engineering Science, Shanghai, China.
³College of School of Automotive Engineering, Shanghai University of Engineering Science, Shanghai, China.

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 ¹H nuclear magnetic resonance (¹H 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.

Lactide, Poly(Lactic Acid)-Poly(Ethylene Glycol) (PLA-PEG), Prepare, Hydrophily

Xu, G. , Chen, S. , Yan, X. , Yang, C. and Chen, Z. (2016) Synthesis and Hydrophilic Performance of Poly(Lactic Acid)-Poly(Ethylene Glycol) Block Copolymers. American Journal of Analytical Chemistry, 7, 299-305. doi: 10.4236/ajac.2016.73028.