Investigating the Properties of in-situ polymerized Poly(butylene succinateco-ethylene terephthalate)/hydroxyapatite Nanocomposite

New nanocomposites of poly(butylene succinate-co-ethylene terephthalate)/nano hydroxyapatite were synthesized using two-step in-situ polycondensation. The microstructure and dispersion of nanoparticles in the nanocomposites were studied using proton nuclear magnetic resonance (1H-NMR) transmittance electron microscopy (TEM). It was found that presence of nano hydroxyapatite catalyzes the reaction and there is a chemical bond between nanoparticles and polymer which leads to a good particle dispersion but it doesn’t affect molecular sequence length. Introducing nano hydroxyapatite increases the hydrolytic degradability dramatically because of the presence of hydrophilic nanoparticle and lower crystallite size.

Keywords:

Copolyester , Nanocomposite , Poly(butylene succinate-co-ethylene terephthalate) , Nano hydroxyapatite , Degradability