Microwave-Assisted Catalytic Synthesis of Bio-Based Copolymers from Waste Cooking Oil.

ABSTRACT: Solvent-free copolymerization of epoxides derived from fatty esters of waste cooking oil with phthalic anhydride using (salen)CrIIICl as catalyst and n-Bu₄NCl/DMAP (tetrabutylammonium chloride/4-(dimethylamino)pyridine) as co-catalysts was carried out for the first time under microwave irradiation, where reaction time was reduced from a number of hours to minutes. The polyesters were obtained with molecular weight (Mw = 3100-6750 g/mol) and dispersity values (D = 1.18-1.92) when (salen)CrIIICl/n-Bu₄NCl was used as catalysts. Moreover, in the case of DMAP as a co-catalyst, polyesters with improved molecular weight (Mw = 5500-6950 g/mol) and narrow dispersity values (D = 1.07-1.28) were obtained even at reduced concentrations of (salen)CrIIICl and DMAP. The obtained products were characteriz

SUBMITTER: Shahi MN 

PROVIDER: S-EPMC5503379 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature