PGA

Poly(glycolic acid) (PGA) is a functional polymer with a defined degree of polymerization. It incorporates a glycolic-acid-derived polyester backbone. Discrete chain lengths with different degrees of polymerization are available. Repeat-unit composition and side-chain structure provide material-design variables distinct from linear PEG, enabling comparisons with homologous materials of different chain lengths or backbones. It supports functionalization and material-structure studies organized around segment length, actually available attachment sites, and interfacial presentation.

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