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HERO ID
4706234
Reference Type
Journal Article
Title
Microwave-Assisted Catalytic Synthesis of Bio-Based Copolymers from Waste Cooking Oil
Author(s)
Shahi, MN; Arshad, M; Ullah, A
Year
2017
Is Peer Reviewed?
1
Journal
Materials
ISSN:
1996-1944
Publisher
MDPI AG
Location
BASEL
Volume
10
Issue
3
Page Numbers
315
Language
English
PMID
28772674
DOI
10.3390/ma10030315
Web of Science Id
WOS:000400863500098
URL
http://www.mdpi.com/1996-1944/10/3/315
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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 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.
Keywords
copolymerization; microwaves; phthalic anhydride; waste cooking oil
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