Hadi Al-Lami,
University of Basra, Iraq
Title: Synthesis and thermal study of multi arms nano block copolymers via combination of ring opening polymerization and thio-click chemistry
Biography
Biography: Hadi Al-Lami,
Abstract
Many new well defined narrow molecular weight distribution polymers with multi-arms have been prepared by the Ring Opening Polymerization, using lactide with the compound resulted from the reaction of mercaptoethanol with poly octavinyl silsesquioxanes (POSS) by the thio-click chemistry. They were characterized by infrared spectroscopy (FTIR), Nuclear Magnetic Resonance (1HNMR and 13CNMR) and by Gel Permeation Chromatography (GPC), where all these analyses have proved the correctness of the expected structure and compositions. On the other hand images obtained from Scanning Electronic Microscopy (SEM) revealed the existence of nano-structures in the prepared copolymers due to the presence of the lactide array to give nanofiber within final compositions prepared. Thermal properties of prepared copolymers have been also studied. The results have demonstrated an increasing in their thermal stability with increasing chain length of lactide compound; also found that copolymers containing POSS in their composition gave higher thermal stability than those copolymers having no POSS.