Amphiphilic copolymers of poly(dimethylsiloxane)-poly(maleic anhydride-vinyl ethyl ether) (PDMS/MA/VEE) were synthesized using a polydimethylsiloxane macroinitiator. The effect of these copolymers in the properties of a silicone pressure sensitive adhesive was evaluated. The addition of the copolymers resulted in lower peel strength (more than 50% reduction) from stainless steel panel while the moisture vapor transmission rate (MVTR) showed a significant increase (8x times higher) compared to the neat pressure sensitive adhesive. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 116: 3265-3270, 2010