Table 1.

Molecular Weights of the Copolymers

Copolymer	Mn (g/mol)	MW (g/mol)	PDI
Tri-CL	12,731.7	16,223.6	1.25
Tri-CL-mPEG	18,755.6	26,921.0	1.44
PET-CL	11,754.3	15,110.2	1.29
PET-CL-P	12,627.1	15,723.6	1.25

Abbreviations: MW, weight-average molecular weight; Mn, number-average molecular weight; PDI, polydispersity index; Tri-CL, tricarballylic acid-poly (ε-caprolactone); Tri-CL-mPEG, tricarballylic acid-poly (ε-caprolactone)-methoxypolyethylene glycol; PET-CL, pentaerythritol-poly (ε-caprolactone); PET-CL-P, pentaerythritol-poly (ε-caprolactone)-polypeptide.