| 초록 |
In order to control the initial rate of enzymatic degradation, a biodegradable poly(l-lactide) (PLLA) was modified by the incorporation of small amount of poly(dimethyl siloxane) (PDMS) or fluorocarbons, both of which are hydrophobic and thus inactive to enzymatic degradation. The surface properties of modified PLLAs were investigated by contact angle and x-ray photoelectron spectroscopy(XPS) measurements. From the XPS results, the surface layer of both modified PLLA films was dominated by the modifiers, PDMS and fluorocarbons which have lower surface energies than that of PLLA. |
