In this chapter providing and short version of all chapters, here I am writing about the different chapter topics such as poly(Lactic Acid) blends in biomedical applications, bioactive glasses/polylactic acid for bone tissue engineering, rubber-based nanoblends: medical applications, polymer/rubber-based nanoblends, eco-friendly fabrication of nanoparticles (NP) particles and fibrils using polymer blends as templates, application of nano znO-blended polymeric membrane, rubber-based nanoblends, polylactic acid and their blends for biomedical application, therapeutic applications of sustainable chitin and chitosan derivatives and Its nanocomposites, thermoplastic starch-based LLDPE films for active packaging.