High-performance antibacterial nanocomposite films with a 3D network structure prepared from carboxylated graphene and modified polyvinyl alcohol

Tsou, Chi‐Hui; Ma, Zheng‐Lu; Guzman, Manuel Reyes De; Zhao, Lisha; Du, Juan; Emori, Wilfred; Gao, Chen; Zhao, Yanchun; Yang, Tao; Wu, Jintian

doi:10.1016/j.porgcoat.2022.106805

Cited by 18 publications

(8 citation statements)

References 66 publications

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“…Moreover, when the content of nanomaterials is 0.4%, the water absorption of PBAT- g -MAH/ZnO-graphene nanocomposites is the lowest, and the interfacial compatibility in the nanocomposite for this content at the reaction site is the best, which improves its hydrophobic property and reduces the degree of dampness of the nanocomposite . However, when the content of nanomaterials is too high, the water absorption performance of the nanocomposite is improved, which reflects that the self-agglomeration of nanomaterials leads to poor binding and more gaps. , …”

Section: Resultsmentioning

confidence: 99%

“…PBAT/ZnO-graphene nanocomposites show a downward trend with increasing amount of the added ZnO-graphene, which may be attributed to the incompatibility of the two phases leading to the loose or defective surface of the nanocomposite, thus showing a relatively hydrophilic property. 45,46 PBAT-g-MAH nanocomposites first shows an upward trend when the amount of ZnOgraphene is from 0 to 0.4%, and the maximum value appears at 0.4%. Then, when the amount of ZnO-graphene is more than 0.4%, it shows a reverse downward trend.…”

Section: Water Vapor Barrier Performancementioning

confidence: 98%

“…43 However, when the content of nanomaterials is too high, the water absorption performance of the nanocomposite is improved, which reflects that the self-agglomeration of nanomaterials leads to poor binding and more gaps. 44,45 The water absorption performance is mainly to analyze the internal structure of the nanocomposite. To further confirm the surface performance of the nanocomposite, the water contact angle is used to prove the possible structural state of the surface.…”

Section: Acsmentioning

confidence: 99%

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Barrier and Biodegradable Properties of Poly(butylene adipate-co-terephthalate) Reinforced with ZnO-Decorated Graphene Rendering it Antibacterial

Tsou

Liu

et al. 2023

ACS Appl. Polym. Mater.

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In this paper, ZnO-decorated graphene (ZnO-graphene) was added to poly(butylene adipate-co-terephthalate) (PBAT) and maleic anhydride-grafted poly(butylene adipate-co-terephthalate) (PBAT-g-MAH) to prepare antibacterial nanocomposites through melt blending. The effect of different amounts of ZnO-graphene on the properties of the nanocomposite materials was discussed. The results of Fourier transform infrared (FTIR) analysis showed that PBAT-g-MAH could form coordination reaction and hydrogen bond with ZnO-graphene, and this synergistically enhanced the tensile properties of the nanocomposites. With the introduction of functional groups, the mechanical properties of PBAT-g-MAH/ZnO-graphene nanocomposites were significantly improved. Compared with pure PBAT, the nanocomposites showed that the maximum tensile strength, yield strength, and elongation at break increased by 20.58, 17.04, and 7.51%, respectively. This work revealed for the first time through X-ray diffraction tests the probable mechanism of dispersion or compatibility in the nanocomposites. Water absorption properties and water contact angle data proved that the introduction of MAH, along with the optimal amount of nanofillers, could greatly improve the tightness of internal and surface structures of the nanocomposites. Relative to PBAT, the use of PBAT-g-MAH/ZnO-graphene containing 0.6% nanofillers significantly improved the water vapor and oxygen barrier efficiencies by 152.8 and 273.5%, respectively. It was shown from the results of antibacterial evaluation that ZnO-graphene could impart PBAT and PBAT-g-MAH with excellent antibacterial activity. Compared with pure PBAT, the nanocomposite films had better mechanical and barrier properties. Both PBAT and PBAT-g-MAH nanocomposites could decompose naturally in soil, indicating that they were environmentally friendly and would have great application prospect in the fields of packaging and medical industries.

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Section: Resultsmentioning

confidence: 99%

Section: Water Vapor Barrier Performancementioning

confidence: 98%

Section: Acsmentioning

confidence: 99%

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Barrier and Biodegradable Properties of Poly(butylene adipate-co-terephthalate) Reinforced with ZnO-Decorated Graphene Rendering it Antibacterial

Tsou

Liu

et al. 2023

ACS Appl. Polym. Mater.

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“…The development of functional composites based on carbon nanomaterials has attracted significant recent attention due to their functions and practicality. These composites can be used as active media for functional devices in high-frequency applications, such as electromagnetic shielding, antenna technology, and electromagnetic compatibility. − However, previous studies have proven that graphene in a polymer matrix is not evenly dispersed and aggregates at relatively low volume fractions because of its large surface area and strong van der Waals forces. − This has restricted the use of graphene in polymer composites. Therefore, the graphene surface is generally modified or functionalized using organic molecules to improve the compatibility between graphene and the polymer matrix. − …”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrical Properties and Impact Strength of Phenolic Formaldehyde Resin Using Silanized Graphene and Ionic Liquid

Li,

Lee,

Wang

et al. 2023

ACS Omega

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In this study, to improve the electrical properties and impact strength of phenolic formaldehyde (PF) resin, PF-based composites were prepared by mixing graphene and the ionic liquid 3-decyl-bis(1-vinyl-1H-imidazole-3-ium-bromide) (C10[VImBr]2) via hot blending and compression–curing processes. The graphene surface was modified using a silane coupling agent. The synergistic effect of graphene and C10[VImBr]2 on the electrical properties, electromagnetic shielding efficiency, thermal stability, impact strength, and morphology of PF/graphene and PF/graphene/C10[VImBr]2 composites was then investigated. It was found that the electrical conductivity of the composites significantly increased from 2.3 × 10–10 to 4.14 × 10–3 S/m with an increase in the graphene content from 0 to 15 wt %, increasing further to 0.145 S/m with the addition of 5 wt % C10[VImBr]2. The electromagnetic shielding efficiency of the composite increased from 4.70 to 28.64 dB with the addition of 15 wt % graphene, while the impact strength of the composites rose significantly from 0.59 to 1.13 kJ/m2 with an increase in the graphene content from 0 to 15 wt %, reaching 1.53 kJ/m2 with the addition of 5 wt % C10[VImBr]2. Scanning electron microscopy images of the PF/GNP/C10[VImBr]2 composites revealed a rough morphology with numerous microcracks.

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“…Graphene is a type of 2D material [13] that possesses high crystal and electronic quality. Due to its unique optical, physical, electrical, and chemical properties, a variety of semiconductor composite photocatalysts supported by 2D graphene nanosheets or filled with graphene have been widely developed and applied in various fields, as demonstrated in several studies [14][15][16]. In particular, graphene's excellent electrical and thermal conductivity and high strength make it a suitable reinforcement for polymers, as it can significantly enhance their mechanical and thermal properties [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Improving Mechanical and Barrier Properties of Antibacterial Poly(Phenylene Sulfide) Nanocomposites Reinforced with Nano Zinc Oxide-Decorated Graphene

Tsou

Yao

et al. 2023

Polymers

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Nano zinc oxide-decorated graphene (G-ZnO) was blended with polyphenylene sulfide (PPS) to improve its tensile, thermal, crystalline, and barrier properties. The properties of neat PPS and PPS/G-ZnO nanocomposites were characterized and compared using various tests, including tensile tests, scanning electron microscopy, X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, evaluation of Escherichia coli inhibition, and barrier performance. The results demonstrated that G-ZnO played a crucial role in heterogeneous nucleation and reinforcement. When the concentration of G-ZnO was 0.3%, the tensile strength, elongation at break, thermostability, crystallinity, and water vapor permeability coefficients (WVPC) approached their maximum values, and the microscopic morphology changed from the original brittle fracture to a relatively tough fracture. In addition, when G-ZnO was added to PPS at a ratio of 0.3%, the tensile strength, elongation at break, and WVPC of PPS were increased by 129%, 150%, and 283%, respectively, compared to pure PPS. G-ZnO endowed the nanocomposites with antibacterial properties. The improvement in barrier performance can be attributed to three reasons: (1) the presence of G-ZnO extended the penetration path of molecules; (2) the coordination and hydrogen bonds between PPS polymer matrix and G-ZnO nanofiller narrowed the H2O transmission path; and (3) due to its more hydrophobic surface, water molecules were less likely to enter the interior of PPS/G-ZnO nanocomposites. This study provides valuable insights for developing high-performance PPS-based nanocomposites for various applications.

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High-performance antibacterial nanocomposite films with a 3D network structure prepared from carboxylated graphene and modified polyvinyl alcohol

Cited by 18 publications

References 66 publications

Barrier and Biodegradable Properties of Poly(butylene adipate-co-terephthalate) Reinforced with ZnO-Decorated Graphene Rendering it Antibacterial

Barrier and Biodegradable Properties of Poly(butylene adipate-co-terephthalate) Reinforced with ZnO-Decorated Graphene Rendering it Antibacterial

Enhanced Electrical Properties and Impact Strength of Phenolic Formaldehyde Resin Using Silanized Graphene and Ionic Liquid

Improving Mechanical and Barrier Properties of Antibacterial Poly(Phenylene Sulfide) Nanocomposites Reinforced with Nano Zinc Oxide-Decorated Graphene

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