POSS-Substituted Hyperbranched Polyester Blends with Thermoplastic Polyurethanes
S Spoljaric, RA Shanks, M Laudon (ed.), B Romanowicz (ed.)
NANOTECHNOLOGY 2011: ADVANCED MATERIALS, CNTS, PARTICLES, FILMS AND COMPOSITES, NSTI-NANOTECH 2011, VOL 1 | CRC PRESS-TAYLOR & FRANCIS GROUP | Published : 2011
Boltorn hyperbranched aliphatic polyesters were functionalised with polyhedral oligomeric silsesquioxane (POSS) and blended with thermoplastic polyurethane (TPU). Functionalisation was confirmed using FTIR. Incorporation of POSS-functonalised Boltorn enhanced thermal stability and mechanical strength. Creep decreased while permanent deformation increased with denrimer concentration. Blends exhibited an increase in storage modulus (E') and glass transition temperature (Tg).