Figure 1
1H-NMR spectra of the PHB-PEG. 1H-NMR spectra of the PHB-PEG (1): (a) PHB chain: 1 is CH3(s), 2 is CH(b), 3 is CH2(b), s is a side chain, and b is a polymer backbone; * see zoomed graph section on (b); (b) PEG chain: a is linking –O–CH2 (4.24 ppm), b is following CH2 (3.73), c is the integral signal from median [–O–CH2–CH2–] group (3.66 ppm), e and d are tail –CH2– (3.70 ppm) and –CH2–OH (3.61 ppm) groups, respectively.