Preprint Article Version 1 This version not peer reviewed

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

Version 1 : Received: 16 March 2017 / Approved: 17 March 2017 / Online: 17 March 2017 (07:36:52 CET)

A peer-reviewed article of this Preprint also exists.

Shahi, M.N.; Arshad, M.; Ullah, A. Microwave-Assisted Catalytic Synthesis of Bio-Based Copolymers from Waste Cooking Oil. Materials 2017, 10, 315. Shahi, M.N.; Arshad, M.; Ullah, A. Microwave-Assisted Catalytic Synthesis of Bio-Based Copolymers from Waste Cooking Oil. Materials 2017, 10, 315.

Journal reference: Materials 2017, 10, 315
DOI: 10.3390/ma10030315

Abstract

Solvent free copolymerization of epoxides derived from fatty acid esters of waste cooking oil with phthalic anhydride using (salen)CrIII Cl as catalyst and n-Bu4NCl/DMAP as co-catalyst was carried out for the first time under microwave irradiation, where reaction time was reduced from number of hours to minutes. The polyesters were obtained with molecular weight (Mw = 3084-6740 g/mol) and dispersity values (D = 1.18-1.92), when (salen)CrIII Cl/n-Bu4NCl was used as catalysts. While in case of DMAP as a co-catalyst, polyesters with improved molecular weight (Mw = 5537-6925 g/mol) and narrow dispersity values (D = 1.07-1.28) were obtained even at reduced concentrations of (salen)CrIII Cl 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) and thermogravimetric analysis (TGA) Techniques.

Subject Areas

waste cooking oil; phthalic anhydride; copolymerization; microwaves

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