New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial Activity

Many chemical, physical, and biological methods have been applied for plastic pollution as a global environmental problem. Polyethylene terephthalate (PET) is a commonly used polymer for many human life-related applications (food and water containers). In this paper, PET was hydrolyzed in a alcohol...

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Main Authors: Kafa Khalaf Hammud, Sahar Hasan Joori, Safauldeen Adnan
Format: Article
Language:English
Published: Corporation of Research and Industrial Development 2025-06-01
Series:Iraqi Journal of Industrial Research
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Online Access:https://ijoir.gov.iq/ijoir/index.php/jou/article/view/539
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author Kafa Khalaf Hammud
Sahar Hasan Joori
Safauldeen Adnan
author_facet Kafa Khalaf Hammud
Sahar Hasan Joori
Safauldeen Adnan
author_sort Kafa Khalaf Hammud
collection DOAJ
description Many chemical, physical, and biological methods have been applied for plastic pollution as a global environmental problem. Polyethylene terephthalate (PET) is a commonly used polymer for many human life-related applications (food and water containers). In this paper, PET was hydrolyzed in a alcoholic NaOH medium at 110°C to obtain sodium terephthalate (Na-Terephthalate) that refluxed with glycerine and polyvinyl alcohol (PVA). PVA-terephthalate polymeric composite formed a flexible thin film. Other composites were prepared using PVA, Na-Terephthalate, and glycerine and NiCl2.6H2O, ZnSO4.7H2O, Sr(NO3)2, or FeCl3. All PVA-terephthalate composites were characterized using FTIR, XRD, SEM, and DTA. Additionally, all prepared composites were screened for their microbial activity against E. coli, S. aureus, P. aeruginosa, and Candida albicans. The PVA-terephthalate composite showed a good to moderate inhibition zone towards S. aureus, P. aeruginosa, and Candida albicans. All metallic composites showed a negative response against P. aeruginosa and Candida albicans. The Zinc composite exhibited a noticeable inhibition zone against E. coli and S. aureus. These newly prepared composites (PVA-terephthalate, Nickel, and Iron composites) were evaluated for endo- and/or exothermic DTA peaks. The exothermic temperature of the Nickel composite was higher than the Iron composite, while PVA-terephthalate did not show any exothermic reaction. The obtained characteristics suggest promising materials for industrial applications such as seedling planting bags, food coating, and packaging materials, starting with minimizing PET quantity in the environment. The addition of metal salt to the blend composition may be a good suggestion in other research fields such as optical or electric applications.
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spelling doaj-art-c146f985783a4119b2bccc4764fd89072025-08-20T03:28:18ZengCorporation of Research and Industrial DevelopmentIraqi Journal of Industrial Research2788-712X2025-06-0112110.53523/ijoirVol12I1ID539539New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial ActivityKafa Khalaf Hammud0Sahar Hasan Joori1Safauldeen Adnan2Iraqi Atomic Energy Commission, IraqIraqi Atomic Energy Commission, IraqScientific Research Commission, Ministry of Higher Education and Scientific Research, Iraq Many chemical, physical, and biological methods have been applied for plastic pollution as a global environmental problem. Polyethylene terephthalate (PET) is a commonly used polymer for many human life-related applications (food and water containers). In this paper, PET was hydrolyzed in a alcoholic NaOH medium at 110°C to obtain sodium terephthalate (Na-Terephthalate) that refluxed with glycerine and polyvinyl alcohol (PVA). PVA-terephthalate polymeric composite formed a flexible thin film. Other composites were prepared using PVA, Na-Terephthalate, and glycerine and NiCl2.6H2O, ZnSO4.7H2O, Sr(NO3)2, or FeCl3. All PVA-terephthalate composites were characterized using FTIR, XRD, SEM, and DTA. Additionally, all prepared composites were screened for their microbial activity against E. coli, S. aureus, P. aeruginosa, and Candida albicans. The PVA-terephthalate composite showed a good to moderate inhibition zone towards S. aureus, P. aeruginosa, and Candida albicans. All metallic composites showed a negative response against P. aeruginosa and Candida albicans. The Zinc composite exhibited a noticeable inhibition zone against E. coli and S. aureus. These newly prepared composites (PVA-terephthalate, Nickel, and Iron composites) were evaluated for endo- and/or exothermic DTA peaks. The exothermic temperature of the Nickel composite was higher than the Iron composite, while PVA-terephthalate did not show any exothermic reaction. The obtained characteristics suggest promising materials for industrial applications such as seedling planting bags, food coating, and packaging materials, starting with minimizing PET quantity in the environment. The addition of metal salt to the blend composition may be a good suggestion in other research fields such as optical or electric applications. https://ijoir.gov.iq/ijoir/index.php/jou/article/view/539PETPolymeric compositeAntimicrobial activityDTA analysis
spellingShingle Kafa Khalaf Hammud
Sahar Hasan Joori
Safauldeen Adnan
New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial Activity
Iraqi Journal of Industrial Research
PET
Polymeric composite
Antimicrobial activity
DTA analysis
title New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial Activity
title_full New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial Activity
title_fullStr New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial Activity
title_full_unstemmed New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial Activity
title_short New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial Activity
title_sort new polymeric composites derived from waste pet synthesis characterization and antimicrobial activity
topic PET
Polymeric composite
Antimicrobial activity
DTA analysis
url https://ijoir.gov.iq/ijoir/index.php/jou/article/view/539
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AT safauldeenadnan newpolymericcompositesderivedfromwastepetsynthesischaracterizationandantimicrobialactivity