Preparation and Properties of Antimicrobial Poly(butylene adipate-co-terephthalate)/TiO2 Nanocomposites Films. Issue 4 (2nd April 2020)

• Record Type: Journal Article
• Authors: Luo, Shuangling; Zhang, Ping; Gao, De
• Is Part Of: Journal of macromolecular science. Volume 59:Issue 4(2020)
• Page Start: 248
• Page End: 261
• Publication Date: 2020-04-02
• Subjects: Antimicrobial activity -- nanocomposite films -- nano-titanium dioxide -- poly(butylene adipate-co-terephthalate) -- titanium dioxide doped silver; Polymerization -- Periodicals; Polymers -- Periodicals; 530.413
• DOI: 10.1080/00222348.2020.1712045
• Languages: English
• ISSNs: 0022-2348

Abstract

Abstract: Poly(butylene adipate-co-terephthalate) (PBAT) nanocomposite films with various contents of nano-titanium dioxide (TiO2 ) and titanium dioxide doped silver (Ag-TiO2 ) were prepared by a solvent casting method. The TiO2 and Ag-TiO2 nanoparticles were surface-modified with silane coupling agents to improve their compatibility and dispersibility in the PBAT matrix. They were denoted as mTiO2 and mAg-TiO2, and were characrterized by Fourier transform infrared (FTIR) spectroscopy and transmission electron microscopy (TEM). The morphology of the PBAT nanocomposite films was studied by field emission scanning electron microscopy (FE-SEM). The crystallinity of the PBAT film increased upon the introduction of the nano-TiO2 /Ag-TiO2 . Its mechanical properties and gas barrier properties were also significantly improved. In addition, the PBAT/mTiO2 and PBAT/mAg-TiO2 nanocomposite films showed a strong antibacterial activity against Gram-negative ( Escherichia coli ) and Gram-positive ( Staphylococcus aureus ) food-borne pathogenic bacteria.