the present invention relates to novel bioabsorbable polymeric compositions based upon ab polyester polyether or related diblocks and triblocks . compositions according to the present invention may be used in medical applications , for example , for reducing or preventing adhesion formation subsequent to medical procedures such as surgery , for producing surgical articles including stents and grafts , as coatings , sealants , lubricants , as transient barriers in the body , for materials which control the release of bioactive agents in the body , for wound and burn dressings and producing biodegradable articles , among numerous others .