the present invention discloses isohexide based compounds and their polymers which are derived from renewable resources and are potentially degradable . also disclosed herein is the synthesis of isohexide based monomers and their polymers from renewable resources which are potentially degradable . further , the present invention disclose a process for the synthesis of isohexide based copolymers via copolymerization of isohexide based monomers and long chain diols , which are degradable .