Surface modification of polylactic acid biomaterials by HEA grafting using γ-irradiation

摘要

A copolymer, poly (L-lactide)-g-poly (2-Hydroxyethyl acrylate) (PLLA-g-HEA) was prepared. The cross-linking structure was produced by irradiation grafting with HEA while the hydrophilicity of PLA was improved and the contact angle reduced. The degradation rate could be controllable by a proper graft ratio.