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. 2022 Apr 11;13(1):372–389. doi: 10.1016/j.apsb.2022.04.002

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Fig. 2 — Synthesis and characterization of materials. (A) Synthetic route of 6s-PLGA-DAr-PO-PEG. (B) FT-IR was used to determine the main functional groups of 6s-PLGA-DAr-PO-PEG compared with 6s-PLGA. (C) The glass transition temperature of 6s-PLGA and 6s-PLGA-DAr-PO-PEG was determined by differential scanning calorimetry assay. (D, E) Molecular Results of 6s-PLGA and 6s-PLGA-DAr-PO-PEG by gel permeation chromatography.