Abstract
Chitosan-g-poly(dimethyl siloxane) (PDMS) copolymer was prepared by grafting PDMS prepolymer onto chitosan. PDMS prepolymer was prepared by ionic ring opening polymerization of octamethylcyclotrisiloxane (D 4 ) using n-buthyllithium (BuLi). The tensile strength and elongation of chitosan-g-PDMS copolymer were mostly constant regardless of PDMS prepolymer grafting %. While critical surface energy of chitosan is about 32 dyne/cm, that of chitosan-g-PDMS copolymer was a little decreased to 25∼29 dyne/cm by grafting PDMS onto chitosan.
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