Systems and methods for customizing mechanical strength in stimuli-responsive bioabsorbable materials

A bioabsorbable material configured to be delivered to tissue, the material comprising:

• a shape-memory polymer compressible in a delivery configuration and configured to swell for a predetermined period of time upon exposure to a stimulation, wherein the predetermined period of time comprises a range from approximately 0.01 seconds to approximately 120 seconds, the shape-memory polymer comprising a polyurethane backbone and one or more functional groups for reversible bonding between adjacent functional groups to transition between an approximately linear polymer to an approximately non-linear polymer.

A method to form a bioabsorbable material configured to be placed inside a body of a human, the method comprising the steps of:

• adding, to a polyurethane polymer, a functional group comprising at least one of a diene and a dienophile moiety, a styrylpyrene moiety, an azo moiety, an ortho-nitrobenzyl moiety, a coumarin moiety, an anthracene moiety, a disulfide moiety, a diselenide moiety, or combinations thereof;
• and chemically bonding the polyurethane polymer and functional groups to form a shape-memory polymer.