Chemical Research in Chinese Universities ›› 2023, Vol. 39 ›› Issue (2): 290-295.doi: 10.1007/s40242-022-2226-3

• Articles • Previous Articles     Next Articles

Synthesis, Characterization and Application of Poly(lactic-co-glycolic acid) with a Mass Ratio of Lactic to Glycolic Segments of 52/48

QIN Chang1, DONG Jing2, XIE Beibei3, WANG Hongkun1, ZHANG Na1, ZHAO Chunhua1, QIAO Congde2, LIU Mingxia4, YANG Xiaodeng2, LI Tianduo2   

  1. 1. Engineering Technology Center, Shandong Guyuchun Biotechnology Co., Ltd., Jinan 250098, P. R. China;
    2. Shandong Key Laboratory of Molecular Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, P. R. China;
    3. Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China;
    4. Department of Blood Transfusion, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, P. R. China
  • Received:2022-07-03 Online:2023-04-01 Published:2023-03-16
  • Contact: YANG Xiaodeng, LI Tianduo, LIU Mingxia E-mail:yangxiaodeng@qlu.edu.cn;litianduo@163.com;liu.ming.xia7@163.com
  • Supported by:
    This work was supported by the Major Research and Development Project of Shandong Province, China(No.2019JZZY011118), the Program for Scientific Research Innovation Team in Colleges and Universities of Shandong Province, China and the Project of the Jinan Science and Technology Bureau, China (No.2019GXRC021).

Abstract: Poly(lactic-co-glycolic acid)(PLGA) is one of the most representative degradable copolymers and promising drug carriers. In the current paper, the PLGAs with a lactic acid/ glycolic acid(LA/GA) molar ratio of 52/48 and various molecular weights were prepared by a melting method. The molecular weight, molecular weight distribution, and thermal stability were determined by 1H NMR and thermogravimetric analysis methods. The results demonstrated that PLGAs with the fixed LA/GA molar ratio(52/48), different molecular weights, and narrow molecular weight distribution could be obtained by solely altering the reaction time. The PLGA films were prepared, and their properties including micro-structure, mechanical property, in-vitro cytotoxicity, and biodegradability were characterized. In combination with the homogeneous microstructures and mechanical properties, the drug-loading and releasing properties of PLGA3.2 films were investigated. The results show that PLGA3.2 film with an LA/GA molar ratio of 52/48 is a promising curcumin carrier.

Key words: Poly(lactic-co-glycolic acid), Mechanical property, PLGA film, Drug carrier