Antibacterial activity and antistatic composites of polyester/Ag‐SiO₂ prepared by a sol–gel method

Abstract

Poly(butylene adipate-co-terephthalate) (PBAT) composites containing silver-silica (Ag-SiO 2 ) were prepared using an in-situ sol-gel process. Maleic anhydride-grafted PBAT (PBAT-g-MA) and multihydroxyl-functionalized Ag-SiO 2 were used to improve the compatibility and dispersibility of Ag-SiO 2 within the PBAT matrix. The composites were characterized morphologically using transmission electron microscopy and chemically using Fourier transform infrared spectrometry. The existence of Ag-SiO 2 nanoparticles on the substrate was confirmed by the ultraviolet-visible absorption spectra. The antibacterial and antistatic properties of the composites were evaluated whether SiO 2 enhanced the electrical conductivity was tested as well as whether Ag enhanced the antibacterial activity of the PBAT-g-MA/ SiO 2 or PBAT/SiO 2 composites. The PBAT-g-MA/SiO 2 or PBAT/SiO 2 composite that contained Ag had better antibacterial activity (more than 1.3-fold). The functionalized PBAT-g-MA/Ag-SiO 2 composite can markedly enhanced antibacterial and antistatic properties due to the carboxyl groups of maleic anhydride, which acted as coordination sites for the Ag-SiO 2 phase, allowing the formation of stronger chemical bonds.

RETRACTED ARTICLE: Preparation and UV-protective property of PVAc/ZnO and PVAc/TiO2 microcapsules/poly(lactic acid) nanocomposites

“…To prevent polymer degradation, UV blocking or absorbing additives can be incorporated into polymer compound. Many UV additives are organic compounds, such as benzophenones or salicylates, which have toxicity issues and relatively short service lives [6][7][8][9].…”

Non-leaching antimicrobial biodegradable PBAT films through a facile and novel approach

“…PBAT can be used to produce fibers [5,6], textile, films [7] (such as mulching films) and packaging materials [8,9]. Moreover, PBAT composites and modified PBAT have been widely investigated in order to prepare value-added products, such as conductive [10] and antimicrobial materials [11][12][13][14][15][16], and meanwhile to minimize the cost. Among them, reducing cost and incorporating antimicrobial activity hold a particular position.…”

“…Chitosan [16], heparin or hyaluronic acid [11], furanoside [13], polyaniline [10], silver-silica [15] and multi-walled carbon nanotubes [14] were used to prepare the antimicrobial PBAT. However, some preparation procedures were rather complicated and no report on the timeliness of antimicrobial properties was available.…”

Preparation of antistatic high‐density polyethylene composites based on synergistic effect of graphene nanoplatelets and multi‐walled carbon nanotubes

“…Because the antistatic and mechanical properties are poor for composites composed of an antistatic agent that has hydrophilic groups, the use of high electrically conductive materials as antistatic agents has attracted great interest for many researchers. Metals, conductive polymers, and carbon materials have been added as antistatic agents into polymer matrix to obtain antistatic properties; such antistatic agents have included Ag, Cu, polyaniline, polypyrrole, carbon black, graphite, carbon nanotubes (CNTs), and graphene …”

“…Metals, conductive polymers, and carbon materials have been added as antistatic agents into polymer matrix to obtain antistatic properties; such antistatic agents have included Ag, Cu, polyaniline, polypyrrole, carbon black, graphite, carbon nanotubes (CNTs), and graphene. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] CNTs and graphene are 2 kinds of new carbon materials that have been prepared in recent years, and their unique structure and excellent performance have attracted significant research interests. CNTs can be divided into single-walled CNTs and multi-walled CNTs (MWCNTs), the latter of which are composed of several concentric single-walled CNTs.…”