423460.fig.001a
(a)
423460.fig.001b
(b)
Figure 1: (a) Formation of the diol ended PHB via transesterification in the presence of ethylene glycol. (b) Transesterification reactions of PHB with (i) butane diol, (ii) transamidation with bisaminopropyl ended PEG, and (iii) transesterification reactions of PHB with methacryloyl oxy ethylene glycol in solution.