Study of the effect of the incorporation of TiO2 nanotubes on the mechanical and photodegradation properties of polyethylenes

Zenteno, Andrés; Lieberwirth, Ingo; Catalina, F.; Corrales, Teresa; Guerrero, Sichem; Vasco, Diego A.; Zapata, Paula Andrea

doi:10.1016/j.compositesb.2016.12.007

Cited by 30 publications

(8 citation statements)

References 47 publications

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“…As observed, α relaxation temperature in LDPE nanocomposites was not affected by incorporating modified and unmodified nanoparticles (Table 3). This result can be related to the low crystallinity of LDPE observed previously 71,72 . Besides, nanoparticles do not influence the crystallization of the polymer matrix, as observed by DSC analysis.…”

Section: Resultsmentioning

confidence: 51%

“…The γ relaxation has been associated with single relaxation processes predominantly of amorphous origin 39 . This relaxation is typical of the joint movements of chains containing three or more CH 2 groups in the main chain 72 . The γ relaxation of LDPE appears at −140°C and did not change for nanocomposites; however, the γ transition peak intensity increased compared to neat LDPE, and the loss modulus E" is shifted to 289 MPa for LDPE/MgO, and 298 MPa for LDPE/Mod‐MgO.…”

Section: Resultsmentioning

confidence: 99%

“…This result can be related to the low crystallinity of LDPE observed previously. 71,72 Besides, nanoparticles do not influence the crystallization of the polymer matrix, as observed by DSC analysis.…”

Section: Dynamic-mechanical Propertiesmentioning

confidence: 86%

“…39 This relaxation is typical of the joint movements of chains containing three or more CH 2 groups in the main chain. 72 The γ relaxation of LDPE appears at À140 C and did not change for nanocomposites; however, the γ transition peak intensity increased compared to neat LDPE, and the loss modulus E" is shifted to 289 MPa for LDPE/MgO, and 298 MPa for LDPE/Mod-MgO. This result is an apparent effect of the MgO content and its organic modification on the relaxation intensity.…”

Section: Dynamic-mechanical Propertiesmentioning

confidence: 91%

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Mechanical and antimicrobial properties of low‐density‐polyethylene/MgO nanocomposites

Cament

Moreno‐Serna

Loyo

et al. 2022

Polymers for Advanced Techs

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Low‐density polyethylene (LDPE) nanocomposites containing magnesium oxide (MgO) nanoparticles are obtained by melt mixing. MgO nanoparticles ca. 29 ± 2 nm are synthesized by sol–gel and organically modified on the surface with oleic acid (Mod‐MgO), whose final concentration in the polymers is 3, 5, and 10 wt%. The presence of these nanoparticles did not affect the crystallization process of LDPE. However, Young's modulus increases with 10 wt% of Mod‐MgO nanoparticles, rendering higher reinforcement effects with an increase as high as 48%. This affects the elongation at break, which decreases ca. 57% compared to neat LDPE. The storage and loss modulus of the LDPE/MgO and LDPE/Mod‐MgO nanocomposites increases at room temperature and low temperatures (−150 to −50°C) compared to neat LDPE. SEM analysis showed that the organic modification of MgO nanoparticles improved their dispersion within the polymer matrix. Nanocomposites present antimicrobial properties against Escherichia coli, reaching an efficiency ca. 53%.

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Section: Resultsmentioning

confidence: 51%

Section: Resultsmentioning

confidence: 99%

Section: Dynamic-mechanical Propertiesmentioning

confidence: 86%

Section: Dynamic-mechanical Propertiesmentioning

confidence: 91%

See 2 more Smart Citations

Mechanical and antimicrobial properties of low‐density‐polyethylene/MgO nanocomposites

Cament

Moreno‐Serna

Loyo

et al. 2022

Polymers for Advanced Techs

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“…The role of degradants is fulfilled by compounds (mainly metal stearates) containing certain elements, e.g. cobalt, manganese, calcium, titanium, or iron, which, when introduced into the matrix, accelerate the breakdown of the polymer [15][16][17][18]. According to García-Montelongo et al [19], the rate of material decomposition is related to the concentration of the degradant, which is subject to faster interaction with polypropylene fibres if present in larger amounts.…”

mentioning

confidence: 99%

Effect of Agri-Environmental Conditions on the Degradation of Spunbonded Polypropylene Nonwoven with a Photoactivator in Mulched Organically Managed Zucchini

Bucki

Siwek

Domagała-Świątkiewicz

et al. 2018

Fibres and Textiles in Eastern Europe

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An experiment with non-degradable and degradable soil mulching materials in zucchini cultivation was carried out in 2016 and 2017 in the organic field of the Vegetable Experimental Station, Agricultural University of Kraków. Two kinds of polypropylene (PP) nonwoven of 50 g m-2 were used: PP standard and PP with 0.1% photoactivator. The control treatment were plots without mulching. The marketable yield obtained in 2016 was 21% and 15% higher on the plots mulched with PP nonwoven and PP nonwoven with a photoactivator, respectively, in comparison with the non-covered plots. Mulching the soil with PP nonwoven increased the water resistance index of the soil structure in comparison with the control and photodegradable PP nonwoven mulch. The progress of degradation over a two-month period showed a 40% reduction in the mass of the PP nonwoven with a photoactivator, and at the end of vegetation the mass of the PP nonwoven used was 52% lower than that of a new one. Tensile parameters of the PP nonwovens and their supramolecular structure were measured.

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Photocatalytic Valorization of Plastic Waste over Zinc Oxide Encapsulated in a Metal–Organic Framework

Qin

Dou

Zhou

et al. 2023

Adv Funct Materials

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The conversion of waste plastic into high‐value‐added chemicals is regarded as a promising approach for relieving global plastic pollution and contributing to the circular economy. Herein, a partial calcination strategy is developed to fabricate a zinc oxide/UiO66‐NH2 (ZnO/UiO66‐NH2) heterojunction, in which ZnO is encapsulated in porous UiO66‐NH2 for the photocatalytic valorization of plastic. This strategy preserves the framework structure of UiO66‐NH2, thus enabling the formation of ZnO with ultra‐small size distributed inside the skeleton. The synergistic effect of the obtained ZnO/UiO66‐NH2 heterojunction facilitates providing an efficient channel for carrier/mass transfer and guarantees structural stability. As a result, ZnO/UiO66‐NH2 exhibits high activity for converting polylactic acid (PLA) and polyvinyl chloride (PVC) into acetic acid, coupled with H2 production. This work provides a feasible strategy for rationally designing heterojunction photocatalysts, as well as an insight into understanding the process of photocatalytic valorization of plastic.

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Study of the effect of the incorporation of TiO2 nanotubes on the mechanical and photodegradation properties of polyethylenes

Cited by 30 publications

References 47 publications

Mechanical and antimicrobial properties of low‐density‐polyethylene/MgO nanocomposites

Mechanical and antimicrobial properties of low‐density‐polyethylene/MgO nanocomposites

Effect of Agri-Environmental Conditions on the Degradation of Spunbonded Polypropylene Nonwoven with a Photoactivator in Mulched Organically Managed Zucchini

Photocatalytic Valorization of Plastic Waste over Zinc Oxide Encapsulated in a Metal–Organic Framework

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