The effect of dopamine modified titanium dioxide nanoparticles on the performance of Poly (vinyl alcohol)/titanium dioxide composites

Deng, Feifei; Guan, Yu; Shi, Zhiqing; Wang, Fei; Che, Xinyuan; Liu, Yawei; Wang, Yinghan

doi:10.1016/j.compscitech.2017.07.009

Cited by 18 publications

(5 citation statements)

References 35 publications

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“…Pure PVA displays three characteristic diffraction peaks at 2θ = 13.5° (100 lattice plane), 19.8° (101 lattice plane), and 22.5° (200 lattice plane), as evident from the XRD results. These peaks correspond to the crystalline regions in the structure of the PVA [ 14 , 15 ].…”

Section: Resultsmentioning

confidence: 99%

Surface Properties of a Novel Poly(vinyl alcohol) Film Prepared by Heterogeneous Saponification of Poly(vinyl acetate) Film

et al. 2017

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Almost general poly(vinyl alcohol) (PVA) films were prepared by the processing of a PVA solution. For the first time, a novel poly(vinyl alcohol) (PVA) film was prepared by the saponification of a poly(vinyl acetate) (PVAc) film in a heterogenous medium. Under the same saponification conditions, the influence of saponification time on the degree of saponification (DS) was studied for the preparation of the saponified PVA film, and it was found that the DS varied with time. Optical microscopy was used to confirm the characteristics and surface morphology of the saponified PVA film, revealing unusual black globules in the film structure. The contact angle of the films was measured to study the surface properties, and the results showed that the saponified PVA film had a higher contact angle than the general PVA film. To confirm the transformation of the PVAc film to the PVA film, 1 H nuclear magnetic resonance spectroscopy, X-ray diffraction measurements, differential scanning calorimetry, and Fourier-transform infrared spectroscopy were employed.

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Section: Resultsmentioning

confidence: 99%

Surface Properties of a Novel Poly(vinyl alcohol) Film Prepared by Heterogeneous Saponification of Poly(vinyl acetate) Film

et al. 2017

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“…Different types of eumelanin (Sepia Melanin, fungal melanin and polydopamine, a eumelanin-like synthetic material) [11] have been evaluated as additives to enhance the absorption in the UV range of polymers such as poly(vinyl alcohol) (PVA) [12], polyimide (PI) [13] and poly(lactic acid) (PLA) [14].…”

Section: Introductionmentioning

confidence: 99%

Smart Packaging in the Sustainability Challenge: Eumelanin as a UV-Absorption Enhancer of Polymers

Mauro

Pellerin

et al. 2019

IEEE Trans. Nanotechnology

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The black-brown biopigment eumelanin screens the harmful ultraviolet (UV) radiation in the human skin. In industry, the absorption in the UV range of plastics is improved by the inclusion of additives. Our work reports an evaluation of the biopigment eumelanin as a nature-inspired additive for polymers to improve their UV-absorption. Eumelanin being non-toxic and produced by natural sources, it represents an interesting candidate for sustainable plastic additives. In our work, we fabricated eumelanin-including films of commercial linear low-density polyethylene (LLDPE), a plastic ubiquitous in packaging applications. The films were obtained by meltcompounding and compression molding. The Melanin Free Acid treatment (MFA) was used to enhance the biopigment dispersion in the films. We observed that amounts of eumelanin as low as 0.8% wt. bring about an increase of the UV absorption, up to one order of magnitude in the UVA range. We also assessed the effect of eumelanin on the film stability under prolonged UV irradiation: the biopigment proved to work both as UV-absorption enhancer but also as a photo-prooxidant, as inferred by thermogravimetric analysis (TGA) and infrared (IR) spectroscopy.

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“…As foreign fillers, biomass particles can form a heterogeneous nucleation site in the matrix, impacting the crystallinity of the composite sheets . As shown in Figure b, PVA and the composites showed a strong and sharp peak at 2θ = 19.7° and a shoulder peak at 2θ = 22.8° ascribable to the (101) and (200) crystal planes of PVA, respectively. Meanwhile, the peak at 2θ = 20.8° corresponded to cellulose in CTS .…”

Section: Resultsmentioning

confidence: 97%

Water-Soluble Poly(vinyl alcohol)/Biomass Waste Composites: A New Route toward Ecofriendly Materials

Tian

et al. 2022

ACS Omega

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With the intention to abate the pollution arising from the improper handling of petroleum-based plastic, green composites consisting of biodegradable plastics and biomass wastes have received widespread attention. However, the balance between mechanical performance and biodegradability still has not been reconciled and evaluated. Herein, a concept for water-soluble poly(vinyl alcohol) (PVA)/biomass waste composite materials is proposed. Instead of degrading to small molecules, the PVA matrix can dissolve in water within the soil. Moreover, after PVA was composited with waste cottonseed shell (CTS) using solid-state shearing milling (S 3 M) technology, considerable mechanical and thermal performance was achieved, with the maximum tensile strength and degradation temperature of the PVA/CTS composites reaching 10.3 MPa and ∼250 °C, respectively. Moreover, the soil burial test demonstrated that even if PVA cannot degraded in environment within a short term, its water-soluble nature ensures its environmental friendliness, as the PVA matrix can dissolve in soil in 10 days without imposing any adverse effects on either plants (wheat) or animals (earthworm). This work not only describes the preparation a series of ecofriendly PVA/biomass composites but also provides new insight into the environmental friendliness of PVA-based materials.

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The effect of dopamine modified titanium dioxide nanoparticles on the performance of Poly (vinyl alcohol)/titanium dioxide composites

Cited by 18 publications

References 35 publications

Surface Properties of a Novel Poly(vinyl alcohol) Film Prepared by Heterogeneous Saponification of Poly(vinyl acetate) Film

Surface Properties of a Novel Poly(vinyl alcohol) Film Prepared by Heterogeneous Saponification of Poly(vinyl acetate) Film

Smart Packaging in the Sustainability Challenge: Eumelanin as a UV-Absorption Enhancer of Polymers

Water-Soluble Poly(vinyl alcohol)/Biomass Waste Composites: A New Route toward Ecofriendly Materials

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