Highly aligned graphene oxide/poly(vinyl alcohol) nanocomposite fibers with high-strength, antiultraviolet and antibacterial properties

Hu, Xinjun; Ren, Nan Qi; Chao, Yuanzhi; Lan, Huilin; Yan, Xiaojie; Sha, Ye; Sha, Xiaolin; Bai, Yongxiao

doi:10.1016/j.compositesa.2017.08.015

Cited by 48 publications

(26 citation statements)

References 58 publications

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“…According to Jing et al, the nanofibrous membranes are capably prepared with the antibacterial and UV protection. [ 40 ] Additionally, with the application of graphene elsewhere recently greatly, Hu et al [ 56 ] have prepared the PVA/graphene composite with super‐anti‐UV properties because they showed a UPF value at 305 greatly than that of the Table 1 recommended values. According to above introduction, the hybriding of organic–inorganic nanomaterials is a possible way for producing anti‐UV materials.…”

Section: Figurementioning

confidence: 99%

“…Moreover, the composite with only 5 wt% TP has shown a greater UPF value at about 310 that is greater than that of Hu et al reported values for PVA/graphene composites. [ 56 ] Furthermore, Table 2 revealed values indicated that the protection degree is reasonably enhanced for PVA/TP composites by only simply increasing the TP wt% even using usually applied range, e.g., 5–20%. [ 11,36 ] This finding is of importance because this indicated the use of TP is not only better than the graphene for forming PVA‐based composites in the enhancement of the anti‐UV properties but also kept the TP‐based advantages to lead the composite fully green with biodegradability and cheap production cost as compared with the graphene.…”

Section: Figurementioning

confidence: 99%

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Fully Green Poly(vinyl alcohol)/Tea Polyphenol Composites and Super Anti‐Ultraviolet and ‐Bacterial Properties

Zhang

Shen

2020

Macro Materials & Eng

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Several fully green composites are prepared by taking the tea polyphenols (TP) with various percentages to blend with poly(vinyl alcohol) (PVA). The as‐prepared PVA/TP composite with only 5% TP shows superb anti‐UV properties even after water washing, the presented UV protection factor (UPF) value is still greater than that of the standard values reported by Australia and New Zealand (AS/NZS 4399‐1996). Moreover, the UPF value of those PVA/TP composites is found capable of furthermore enhancement by increasing the TP percent. This PVA/TP composite also shows good antibacterial and biodegradability while it is kept with certain mechanical properties to fit required application cases.

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Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Fully Green Poly(vinyl alcohol)/Tea Polyphenol Composites and Super Anti‐Ultraviolet and ‐Bacterial Properties

Zhang

Shen

2020

Macro Materials & Eng

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“…Polymeric matrixes are interesting components for UV‐protective materials because of their compatibility with different substrates, easy deposition, excellent transparency, and low cost. In particular, poly(vinyl alcohol) (PVA) [Figure (a)] has been widely used as a matrix for UV‐protective materials . Currently, esculetin, graphene, and melanin are the most‐used organic UV absorbers in PVA matrixes.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, poly(vinyl alcohol) (PVA) [Figure (a)] has been widely used as a matrix for UV‐protective materials . Currently, esculetin, graphene, and melanin are the most‐used organic UV absorbers in PVA matrixes. Among them, melanin is considered one of the most promising candidates because of its broad UV absorption and biodegradability .…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet‐protective thin film based on PVA–melanin/rod‐coated silver nanowires and its application as a transparent capacitor

Albano

Paulin

Trino

et al. 2019

J of Applied Polymer Sci

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Melanin is a biopigment in many organisms with interesting intrinsic properties suitable for emerging and sustainable technologies. In this work, we report the fabrication of transparent ultraviolet (UV)‐protective thin films based on synthetic melanin in poly(vinyl alcohol) (PVA) matrixes. Melanin was synthesized through the auto‐oxidation of l‐3,4‐dihydroxyphenylalanine (l‐DOPA) under oxygen pressure, resulting in excellent solubility in water. A thin film with a composition of 3 wt % melanin (synthesized at 6 atm oxygen pressure) and silver nanowires (AgNWs) deposited on the surface has good transparency in visible light and 100% UV irradiation photoprotection. Encapsulated PVA–melanin/AgNW films dipped in water for 7 days retained 98% of their UV irradiation photoprotection. Moreover, using a transparent conductive oxide substrate, this UV‐protective system can be simultaneously used as a transparent capacitor. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47805.

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“…Poly(vinyl alcohol) (PVA), as one of the major water‐soluble polymers, has been widely used to reinforce cementitious materials in terms of physical and engineering properties due to its superior chemical resistance and excellent mechanical properties . It has been reported that PVA with a large amount of hydroxyl groups can be used as a reinforcing filler, aggregate surface modifier, or fiber reinforcement to cementitious materials.…”

Section: Introductionmentioning

confidence: 99%

Thermal, mechanical, and surface properties of poly(vinyl alcohol) (PVA) polymer modified cementitious composites for sustainable development

Lu¹,

Hanif

et al. 2017

J of Applied Polymer Sci

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This study aimed to investigate the effect of poly(vinyl alcohol) (PVA) polymer on the thermal, mechanical, and surface properties on cementitious composites for sustainable development. Thermal properties of the PVA-modified cement paste, including thermal insulation and energy absorption ability, were first studied and correlated with the porosity and microstructures. The experimental results indicated that the thermal conductivity of cement paste can be greatly reduced by 42.9% with 2.0 wt % addition of PVA due to the more porous structure. However, at the same time, more thermal energy can be captured and concentrated at the surface of cement paste with the increasing amount of PVA, causing an increased thermal load and a negative effect on thermal insulating efficiency of cement paste. The contradictory effect of PVA on thermal properties of cement paste should be balanced before it is used as a foaming modifier to fabricate cementitious composites with thermal insulation. In addition, the contact angle measurement revealed that PVA can be used as an effective additive to improve the hydrophobicity of cement-based materials. Only 3.0% PVA can turn the surface nature from hydrophilicity to hydrophobicity for cement paste, which benefited to the development of self-cleaning cementitious composites. Finally, the mechanical properties of the PVA-modified cement paste, especially for the tensile strength that has been rarely reported, were investigated and correlated with its thermal and surface properties. Due to the compensative effects of irregular packing, formation of PVA films and microcracks, tensile strength of cement paste can be improved by 23.5% with a small scarifying of the compressive strength by adding 2.0% of PVA. In conclusion, the PVA-modified cement-based materials with lower thermal conductivity, hydrophobic surface nature and enhanced mechanical properties have a great potential to satisfy the high requirements in developing sustainable infrastructure.

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Highly aligned graphene oxide/poly(vinyl alcohol) nanocomposite fibers with high-strength, antiultraviolet and antibacterial properties

Cited by 48 publications

References 58 publications

Fully Green Poly(vinyl alcohol)/Tea Polyphenol Composites and Super Anti‐Ultraviolet and ‐Bacterial Properties

Fully Green Poly(vinyl alcohol)/Tea Polyphenol Composites and Super Anti‐Ultraviolet and ‐Bacterial Properties

Ultraviolet‐protective thin film based on PVA–melanin/rod‐coated silver nanowires and its application as a transparent capacitor

Thermal, mechanical, and surface properties of poly(vinyl alcohol) (PVA) polymer modified cementitious composites for sustainable development

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