Figure 1From: Thiolated chitosan-modified PLA-PCL-TPGS nanoparticles for oral chemotherapy of lung cancerChemical structure and 1H-NMR spectra of PLA-PCL-TPGS copolymer. (A) Chemical structure of PLA-PCL-TPGS copolymer; (B) typical 1H-NMR spectra of PLA-PCL-TPGS copolymer.Back to article page