Preparation and Performance Study of Fractal Nano Silica/PBAT Nanocomposite Films

JI Jiaqi, XIN Yu, WANG Li, HOU Jingkui, SONG Lixin, WANG Yuanxia, LI Xianliang

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Plastics Science and Technology ›› 2025, Vol. 53 ›› Issue (01) : 91-97. DOI: 10.15925/j.cnki.issn1005-3360.2025.01.017
Biological and Degradable Material

Preparation and Performance Study of Fractal Nano Silica/PBAT Nanocomposite Films

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Abstract

Poly(butylene adipate-co-terephthalate) (PBAT) is an environmentally friendly biodegradable packaging material, but its poor mechanical properties and lack of antibacterial properties limit its application in packaging materials. The fractal structure silica nanoparticles (FSN) were prepared and modified by 3-aminopropyl tri-ethoxysilane and loaded with silver nanoparticles (FSN-Ag). The FSN-Ag were added to PBAT polymer matrix as filler, and the PBAT-FSN-Ag composite films were prepared by solution casting method. The effects of the amount of FSN-Ag on the mechanical properties, thermal properties, optical properties, hydrophobic properties and antibacterial properties of PBAT films were studied. The results showed that the tensile strength of the composite film increased significantly with the increase of FSN-Ag content, and the composite film showed good thermal stability. When only a small amount of FSN-Ag was added, the composite film showed excellent antibacterial effect. PBAT-FSN-Ag composite film has a good application prospect as an active packaging material.

Key words

PBAT / Silica dioxide / Fractal structure / Antibacterial material / Composites

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JI Jiaqi , XIN Yu , WANG Li , et al . Preparation and Performance Study of Fractal Nano Silica/PBAT Nanocomposite Films. Plastics Science and Technology. 2025, 53(01): 91-97 https://doi.org/10.15925/j.cnki.issn1005-3360.2025.01.017

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