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    Physicochemical Properties Study of Poly(lactic acid-co-glycolic acid)/Poly(γ-benzyl L-glutamate)-graft-poly(ethylene glycol) Blend Film

    Year: 2013

    Journal: Polymer-Plastics Technology and Engineering,Volume 52, Issue 12, 2013, pages 1188-1192, 20131119

    Authors: Guoquan Zhu, Fagang Wang *, Kejing Xu, Qiaochun Gao & Yuying Liu

    Organizations: a School of Materials Science and Engineering, Shandong University of Technology , Zibo , P.R. China

    A series of poly(lactic acid-co-glycolic acid)/poly(γ-benzyl L-glutamate)-graft-poly(ethylene glycol) (PLGA/PBLG-graft-PEG) blend films with different PBLG-graft-PEG mole contents were prepared by casting the polymer blend solution in chloroform. Surface morphologies of the PLGA/PBLG-graft-PEG blend films were studied by scanning electron microscopy (SEM). Thermal, mechanical, and chemical properties of PLGA/PBLG-graft-PEG blend films were investigated by differential scanning calorimeter (DSC), thermogravimetric analysis (TGA), tensile tests, and surface contact angle tests. The results displayed that the introduction of PBLG-graft-PEG could modify the properties of PLGA films.