Preparation and Performance of Biodegradable Poly(butylene adipate-<i>co</i>-terephthalate) Composites Reinforced with Novel AgSnO<sub>2</sub> Microparticles for Application in Food Packaging

Biodegradable composites with antimicrobial properties were prepared with microparticles of silver stannate (AgSnO<sub>2</sub>) and poly(butylene adipate-co-terephthalate) (PBAT) and tested for applications in food packaging. The PBAT matrix was synthesized and confirmed by <sup>1&...

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Main Authors: Raja Venkatesan, Krishnapandi Alagumalai, Seong-Cheol Kim
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Polymers
Subjects:
Online Access:https://www.mdpi.com/2073-4360/15/3/554
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author Raja Venkatesan
Krishnapandi Alagumalai
Seong-Cheol Kim
author_facet Raja Venkatesan
Krishnapandi Alagumalai
Seong-Cheol Kim
author_sort Raja Venkatesan
collection DOAJ
description Biodegradable composites with antimicrobial properties were prepared with microparticles of silver stannate (AgSnO<sub>2</sub>) and poly(butylene adipate-co-terephthalate) (PBAT) and tested for applications in food packaging. The PBAT matrix was synthesized and confirmed by <sup>1</sup>H-nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction (XRD). Ultrasonic and coprecipitation methods were used to synthesize AgSnO<sub>2</sub>. A two-step mixing method and a solvent cast technique were utilized to fabricate the PBAT composites (different weight % of AgSnO<sub>2</sub>) for packaging foods. Attenuated total reflection-infrared spectroscopy, X-ray photoelectron spectroscopy, XRD, and scanning electron microscopy were used to investigate the formation, structure, and size of the composites. Thermogravimetric analysis and differential thermal calorimetry were used to examine the PBAT/AgSnO<sub>2</sub> composites. The best characteristics are exhibited in 5.0 wt. % AgSnO<sub>2</sub> loaded PBAT composite. The tensile strength, elongation at break, water vapor transmission rate, and oxygen transmission rate were 22.82 MPa, 237.00%, 125.20 g/m<sup>2</sup>/day, and 1104.62 cc/m<sup>2</sup>/day.atm, respectively. Incorporating AgSnO<sub>2</sub> enhanced the hydrophobicity of the PBAT materials as evaluated by the water contact angle. The 5.0 wt. % AgSnO<sub>2</sub>/PBAT film shows a favorable zone of inhibition against the bacteria pathogens <i>S. aureus</i> and <i>E. coli</i>, according to an evaluation of its antimicrobial activity. The weight loss of 5% AgSnO<sub>2</sub>/PBAT film was 78.4% after eight weeks in the natural soil environments. In addition, the results of food quality studies recommend that AgSnO<sub>2</sub>/PBAT (5.0 wt. %) film had a longer food shelf life than the neat PBAT and commercial, increasing it from one to 14 days for carrot vegetables.
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spelling doaj.art-280a0f7768a24379a5956d9276b493082023-11-16T17:47:13ZengMDPI AGPolymers2073-43602023-01-0115355410.3390/polym15030554Preparation and Performance of Biodegradable Poly(butylene adipate-<i>co</i>-terephthalate) Composites Reinforced with Novel AgSnO<sub>2</sub> Microparticles for Application in Food PackagingRaja Venkatesan0Krishnapandi Alagumalai1Seong-Cheol Kim2School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaSchool of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaSchool of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaBiodegradable composites with antimicrobial properties were prepared with microparticles of silver stannate (AgSnO<sub>2</sub>) and poly(butylene adipate-co-terephthalate) (PBAT) and tested for applications in food packaging. The PBAT matrix was synthesized and confirmed by <sup>1</sup>H-nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction (XRD). Ultrasonic and coprecipitation methods were used to synthesize AgSnO<sub>2</sub>. A two-step mixing method and a solvent cast technique were utilized to fabricate the PBAT composites (different weight % of AgSnO<sub>2</sub>) for packaging foods. Attenuated total reflection-infrared spectroscopy, X-ray photoelectron spectroscopy, XRD, and scanning electron microscopy were used to investigate the formation, structure, and size of the composites. Thermogravimetric analysis and differential thermal calorimetry were used to examine the PBAT/AgSnO<sub>2</sub> composites. The best characteristics are exhibited in 5.0 wt. % AgSnO<sub>2</sub> loaded PBAT composite. The tensile strength, elongation at break, water vapor transmission rate, and oxygen transmission rate were 22.82 MPa, 237.00%, 125.20 g/m<sup>2</sup>/day, and 1104.62 cc/m<sup>2</sup>/day.atm, respectively. Incorporating AgSnO<sub>2</sub> enhanced the hydrophobicity of the PBAT materials as evaluated by the water contact angle. The 5.0 wt. % AgSnO<sub>2</sub>/PBAT film shows a favorable zone of inhibition against the bacteria pathogens <i>S. aureus</i> and <i>E. coli</i>, according to an evaluation of its antimicrobial activity. The weight loss of 5% AgSnO<sub>2</sub>/PBAT film was 78.4% after eight weeks in the natural soil environments. In addition, the results of food quality studies recommend that AgSnO<sub>2</sub>/PBAT (5.0 wt. %) film had a longer food shelf life than the neat PBAT and commercial, increasing it from one to 14 days for carrot vegetables.https://www.mdpi.com/2073-4360/15/3/554poly(butylene adipate-co-terephthalate) (PBAT)AgSnO<sub>2</sub> microparticlescompositesbiodegradableantimicrobial activityfood packaging
spellingShingle Raja Venkatesan
Krishnapandi Alagumalai
Seong-Cheol Kim
Preparation and Performance of Biodegradable Poly(butylene adipate-<i>co</i>-terephthalate) Composites Reinforced with Novel AgSnO<sub>2</sub> Microparticles for Application in Food Packaging
Polymers
poly(butylene adipate-co-terephthalate) (PBAT)
AgSnO<sub>2</sub> microparticles
composites
biodegradable
antimicrobial activity
food packaging
title Preparation and Performance of Biodegradable Poly(butylene adipate-<i>co</i>-terephthalate) Composites Reinforced with Novel AgSnO<sub>2</sub> Microparticles for Application in Food Packaging
title_full Preparation and Performance of Biodegradable Poly(butylene adipate-<i>co</i>-terephthalate) Composites Reinforced with Novel AgSnO<sub>2</sub> Microparticles for Application in Food Packaging
title_fullStr Preparation and Performance of Biodegradable Poly(butylene adipate-<i>co</i>-terephthalate) Composites Reinforced with Novel AgSnO<sub>2</sub> Microparticles for Application in Food Packaging
title_full_unstemmed Preparation and Performance of Biodegradable Poly(butylene adipate-<i>co</i>-terephthalate) Composites Reinforced with Novel AgSnO<sub>2</sub> Microparticles for Application in Food Packaging
title_short Preparation and Performance of Biodegradable Poly(butylene adipate-<i>co</i>-terephthalate) Composites Reinforced with Novel AgSnO<sub>2</sub> Microparticles for Application in Food Packaging
title_sort preparation and performance of biodegradable poly butylene adipate i co i terephthalate composites reinforced with novel agsno sub 2 sub microparticles for application in food packaging
topic poly(butylene adipate-co-terephthalate) (PBAT)
AgSnO<sub>2</sub> microparticles
composites
biodegradable
antimicrobial activity
food packaging
url https://www.mdpi.com/2073-4360/15/3/554
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