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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-Bu?NCl/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-Bu?NCl 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 characterized and evaluated by attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR), proton nuclear magnetic resonance (¹H-NMR) spectroscopy, gel permeation chromatography (GPC), thermogravimetric analysis (TGA) and differential scanning calorimetric (DSC) Techniques.

SUBMITTER: Shahi MN 

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

REPOSITORIES: biostudies-literature

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

Shahi Mahrzadi Noureen MN   Arshad Muhammad M   Ullah Aman A  

Materials (Basel, Switzerland) 20170320 3


Solvent-free copolymerization of epoxides derived from fatty esters of waste cooking oil with phthalic anhydride using (salen)Cr<sup>III</sup>Cl 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 (<i>M</i>w = 3100-6750 g/mol) and dispersity values (D = 1.18-1.92) whe  ...[more]

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