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      Synthesis of a Novel Ladder Poly(azomethine-ester) Based on PET Waste Bottles

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          Abstract

          In the present investigation, a novel ladder polymer, poly(azomethine ester), was prepared via solution polycondensation polymerization between terephthalic acid and the novel monomer. Terephthalic acid was regenerated from PET waste bottles by saponification process, whereas p-phenylenediamine was obtained via Hoffmann rearrangement method. A novel monomer, namely N,N′-bis(2,5-dihydroxy benzylidene)-1,4-diaminobenzene was prepared from the reaction of 2,5-di-hydroxybenzadehyde with p-phenylenediamine in the ratio of 2:1, respectively. For the first time a solution polycondensation method has been employed for the synthesis of a ladder polymer which is otherwise prepared commonly via Diels-Alder cycloaddition reaction. The synthesized ladder polymer was characterized by Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance spectroscopy ( 1H NMR), carbon nuclear magnetic resonance spectroscopy ( 13C NMR), elemental analysis (CHN), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The results revealed that the ladder polymer possess highly regular ladder like framework, and that most of the ester groups have taken part in the side-by-side polymerization reaction.

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          Most cited references 36

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          Synthetic Principles for Bandgap Control in Linear pi-Conjugated Systems.

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            Ladder-type materials

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              Theoretical studies on polyaniline

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                Author and article information

                Journal
                ipp
                International Polymer Processing
                Carl Hanser Verlag
                0930-777X
                2195-8602
                3 July 2019
                : 34
                : 3
                : 296-306
                Affiliations
                1 Polymer Research Laboratory, Chemistry Department, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
                2 Research Centre for Nano-Materials and Technology (RCNMET), School of Science and Technology, Sunway University, Selangor Darul Ehsan, Malaysia
                3 University of Malaya Centre for Ionic Liquids, University of Malaya, Kuala Lumpur, Malaysia
                Author notes
                [* ] Correspondence address, Mail address: Ahmed Mohammed Issam, Polymer Research Laboratory, Chemistry Department, University of Malaya, Faculty of Science, 50603 Kuala Lumpur, Malaysia, E-mail: issam@ 123456um.edu.my ; issam_usm@ 123456yahoo.com
                Article
                IPP3595
                10.3139/217.3595
                © 2019, Carl Hanser Verlag, Munich
                Page count
                References: 43, Pages: 11
                Product
                Self URI (journal page): http://www.hanser-elibrary.com/loi/ipp
                Categories
                Regular Contributed Articles

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