分形纳米二氧化硅/PBAT纳米复合薄膜制备及性能研究

纪嘉琦, 辛宇, 王丽, 侯景魁, 宋立新, 王元霞, 李先亮

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塑料科技 ›› 2025, Vol. 53 ›› Issue (01) : 91-97. DOI: 10.15925/j.cnki.issn1005-3360.2025.01.017
生物与降解材料

分形纳米二氧化硅/PBAT纳米复合薄膜制备及性能研究

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

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摘要

聚己二酸/对苯二甲酸丁二醇酯(PBAT)是一种环境友好型可生物降解包装材料,但其力学性能较差、不具备抗菌性限制其在包装材料的应用。研究制备具有分形结构的纳米二氧化硅粒子(FSN),以3-氨丙基三乙氧基硅烷对二氧化硅粒子进行改性并在其表面负载纳米银(FSN-Ag),将其作为填料加入PBAT聚合物基体中,采用溶液浇铸法制备PBAT-FSN-Ag复合薄膜,探讨纳米粒子的添加量对PBAT薄膜的力学性能、热学性能、光学性能、疏水性能和抗菌性能的影响。结果表明:随着FSN-Ag含量的增加,复合薄膜的拉伸强度明显提高,同时复合薄膜表现出良好的热稳定性。只加入少量的FSN-Ag时,复合薄膜表现出优异的抗菌效果。PBAT-FSN-Ag复合膜作为活性包装材料具有良好的应用前景。

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.

关键词

PBAT / 二氧化硅 / 分形结构 / 抗菌材料 / 复合材料

Key words

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

中图分类号

TQ317 / TQ327.9

引用本文

导出引用
纪嘉琦 , 辛宇 , 王丽 , . 分形纳米二氧化硅/PBAT纳米复合薄膜制备及性能研究. 塑料科技. 2025, 53(01): 91-97 https://doi.org/10.15925/j.cnki.issn1005-3360.2025.01.017
JI Jiaqi, XIN Yu, WANG Li, et al. Preparation and Performance Study of Fractal Nano Silica/PBAT Nanocomposite Films[J]. 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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基金

国家自然科学基金(22005203)
沈阳先进涂层材料产业技术研究院项目(2021210101002264)
辽宁省教育厅面上项目(LJKZ0454)

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