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A series of poly(lactic acid- co-glycolic acid) (PLGA)/poly( γ-benzyl l-glutamate) (PBLG) blend films were prepared by casting the polymer blend solution in chloroform. Surface morphologies of the PLGA/PBLG blend films were investigated by scanning electron microscopy. Thermal, mechanical, and chemical properties of PLGA/PBLG blend films were studied by differential scanning calorimetry, thermogravimetric analysis, tensile tests, and surface contact angle tests. The results displayed that when PBLG mole content is 4 %, the tensile strength and the maximum decomposition temperature of the polymer blend film are 20.2 MPa and 359 °C, respectively, suggesting that the polymer blend film holds both a better mechanical property and a better thermal property. [ABSTRACT FROM AUTHOR]

A series of poly( l-lactic acid) (PLLA)/poly( γ-benzyl l-glutamate)- graft-poly(ethylene glycol) (PBLG- graft-PEG) blend films were prepared by casting the polymer blend solution in chloroform. Surface morphologies of the PLLA/PBLG- graft-PEG blend films were investigated by scanning electron microscopy. Thermal, mechanical, and chemical properties of PLLA/PBLG- graft-PEG blend films were studied by differential scanning calorimetry, thermogravimetric analysis, tensile tests, and surface contact angle tests. It was indicated that, when PBLG- graft-PEG mole content is 5 %, the tensile strength and the surface contact angle of the polymer blend film are 21.2 MPa and 63.2°, respectively, suggesting that the polymer blend film has both good mechanical and good chemical properties. [ABSTRACT FROM AUTHOR]

A series of poly(lactic acid-co-glycolic acid)/poly(γ-benzylL-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. [ABSTRACT FROM AUTHOR]

A series of poly(γ-benzylL-glutamate)-block-poly(ethylene glycol) (PBLG-block-PEG)/poly(L-lactic acid) (PLLA) blend membranes were prepared by casting the polymer blend solution in chloroform. Surface morphologies of the PBLG-block-PEG/PLLA blend membranes were investigated by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Thermal, mechanical, and chemical properties of PBLG-block-PEG/PLLA blend membranes were studied by thermogravimetric analysis (TGA), tensile tests, and contact angle testing. It was found that the introduction of PLLA could exert outstanding effects on the morphology and the properties of polypeptide copolymer membrane. [ABSTRACT FROM AUTHOR]

A series of poly(vinyl alcohol)/poly(propylene glycol) (PVA/PPG) blend films with different PPG contents were prepared by casting the polymer blend solutions. Structure and morphologies of the PVA/PPG blend films were studied by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). Thermal, mechanical, and chemical properties of PVA/PPG blend films were investigated by differential scanning calorimeter (DSC), thermogravimetric analysis (TGA), tensile strength tests, and other physical methods. It was revealed that the introduction of PPG could exert marked effects on the morphology and the properties of PVA film. [ABSTRACT FROM AUTHOR]

Poly(L-lactic acid) (PLLA)/polyurethane (PU)-blend films were prepared by casting the polymer blend solution in chloroform. Surface morphologies of the PLLA/PU-blend films were investigated by scanning electron microscopy (SEM). Thermal, mechanical, and chemical properties of PLLA/PU-blend films were studied by differential scanning calorimetry (DSC), tensile tests, and contact angle testing. It was indicated that the addition of PU could exert marked effects on the properties of PLLA films. [ABSTRACT FROM PUBLISHER]

Rigid poly(γ-benzyl L-glutamate)/flexible poly(vinyl chloride) (PBLG/PVC) blend membranes were prepared by casting the polymer blend solution in dichloroethane. Structure and morphologies of the PBLG/PVC blend membranes were investigated by Fourier transform infrared spectroscopy (FT-IR), atomic force microscopy (AFM), and scanning electron microscopy (SEM). Thermal, mechanical, and chemical properties of PBLG/PVC blend membranes were studied by differential scanning calorimetry (DSC), tensile tests, and other physical methods. It was found that the introduction of PVC could exert marked effects on the morphology and the properties of PBLG membrane. [ABSTRACT FROM AUTHOR]