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Benahmed Abdessamade, Speaker at Green Chemistry Conferences
Mohammed First University, Morocco
Title : Cellulose acetate-g-polycaprolactone copolymerization using diisocyanate intermediates and the effect of polymer chain length on surface, thermal, and antibacterial properties

Abstract:

The need for biodegradable and biocompatible polymers is growing quickly, particularly in the biomedical and environmental industries. Cellulose acetate, a natural polysaccharide, can be taken from plants and modified with polycaprolactone to improve its characteristics for a number of uses, including biomedical applications and food packaging. Cellulose acetate-g-polycaprolactone was prepared by a three-step reaction: First, polymerization of ε-caprolactone via ring-opening polymerization (ROP) reaction using 2-hydroxyethyl methacrylate (HEMA) and functionalization of polycaprolactone(PCL) by introducing NCO on the hydroxyl end of the HEMA-PCL using hexamethyl lenediisocyanate(HDI) were carried out. Then, the NCO–HEMA-PCL was grafted onto cellulose acetate (using the “grafting to” method). The polycaprolactone grafted cellulose acetate was confirmed by FTIR, the thermal characteristics of the copolymers were investigated by DSC and TGA, and the hydrophobicity was analyzed via water CA measurement. Introducing NCO-PCL to cellulose acetate increased the thermal stability. The contact angle of the unreacted PCL was higher than that of cellulose acetate-g-PCL, and it increased when the chain length increased. The CA-g-PCL50, CA-g-PCL100, and CA-g-PCL200 showed very high inhibition zones for all three bacteria tested (E. coli, S. aureus, and P. aeruginosa).

Biography:

Dr. Benahmed is a Ph.D. candidate in Applied Chemistry and Environment at the Laboratory of Applied Chemistry and Environment (LCAE), Mohammed First University, Oujda, Morocco, under the supervision of Prof. Abderrahman Elidrissi. Their thesis focuses on developing biocompatible macromolecular materials for biomedical applications. They have published an article in MDPI on cellulose acetate-g-polycaprolactone copolymerization and its effects. They hold an M.Sc. in Water Chemistry and a B.Sc. in Chemistry with an emphasis on Environmental Studies, both from Mohammed First University.

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