Study of the photodegradation of nanocomposites containing TiO2 nanoparticles dispersed in polyethylene and in poly(ethylene-co-octadecene)

Zapata, Paula Andrea; Rabagliati, Franco M.; Lieberwirth, Ingo; Catalina, F.; Corrales, Teresa

doi:10.1016/j.polymdegradstab.2014.06.020

Cited by 39 publications

(17 citation statements)

References 38 publications

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“…FTIR spectra were obtained on a Perkin Elmer BX-FTIR (Waltham, MA, USA). The polymer degradation was determined using the carbonyl index (CI) as the ratio of the optical density of the ketone carbonyl absorptions bands at 1715 cm −1 and the optical density corresponding to CH 2 scissoring peak at 1465 cm −1 [19].…”

Section: Methodsmentioning

confidence: 99%

Effect of CaCO3 Nanoparticles on the Mechanical and Photo-Degradation Properties of LDPE

et al. 2018

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CaCO3 nanoparticles of around 60 nm were obtained by a co-precipitation method and used as filler to prepare low-density polyethylene (LDPE) composites by melt blending. The nanoparticles were also organically modified with oleic acid (O-CaCO3) in order to improve their interaction with the LDPE matrix. By adding 3 and 5 wt% of nanofillers, the mechanical properties under tensile conditions of the polymer matrix improved around 29%. The pure LDPE sample and the nanocomposites with 5 wt% CaCO3 were photoaged by ultraviolet (UV) irradiation during 35 days and the carbonyl index (CI), degree of crystallinity (χc), and Young’s modulus were measured at different times. After photoaging, the LDPE/CaCO3 nanocomposites increased the percent crystallinity (χc), the CI, and Young’s modulus as compared to the pure polymer. Moreover, the viscosity of the photoaged nanocomposite was lower than that of photoaged pure LDPE, while scanning electron microscopy (SEM) analysis showed that after photoaging the nanocomposites presented cavities around the nanoparticles. These difference showed that the presence of CaCO3 nanoparticles accelerate the photo-degradation of the polymer matrix. Our results show that the addition of CaCO3 nanoparticles into an LDPE polymer matrix allows future developments of more sustainable polyethylene materials that could be applied as films in agriculture. These LDPE-CaCO3 nanocomposites open the opportunity to improve the low degradation of the LDPE without sacrificing the polymer’s behavior, allowing future development of novel eco-friendly polymers.

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Section: Methodsmentioning

confidence: 99%

Effect of CaCO3 Nanoparticles on the Mechanical and Photo-Degradation Properties of LDPE

et al. 2018

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“…Photocatalyst can do this by the degradation of the water molecules into radicals using the sun light . The TiO 2 micro or nanoparticles is the most studied photocatalyst for this purpose . However the band gap of this filler is very high and also need to the high light intensity which cannot be achievable actually.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation of low‐density polyethylene with prooxidant and photocatalyst

Gharehdashli

Mortazavi

Rashidi

2020

J of Applied Polymer Sci

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Low‐density polyethylene (LDPE) composite films with trisilver phosphate (Ag3PO4) and cadmium selenide (CdSe) particles as photocatalysts and manganese stearate as prooxidant were prepared. The film samples were irradiated under UV and visible light and their photodegradation were evaluated using Fourier‐transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and differential scanning calorimetry. The carbonyl index of the photocatalyst containing samples was very higher than the pure irradiated LDPE and even prooxidant containing film. The morphologies of the irradiated composite films were completely changed and had many cavities and cracks. The thermal stability of the composites was very lower than the pure polyethylene. However the crystallinity of the LDPE films with photocatalysts was enhanced contrarily the LDPE film with manganese stearate. Generally the results showed that the combination of the prooxidant with photocatalyst have synergistic effect on the photodegradation of the LDPE and can be used to accelerate the degradation of the polyethylene films.

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“…Nowadays, polymeric products, especially polyethylene (PE) and polypropylene (PP), are developed for their low expense, good mechanical features, small weight, and other desirable characteristics [1]. Different kinds of polyethylene, containing high-density polyethylene (HDPE), low-density polyethylene (LDPE), and linear low-density polyethylene (LLDPE) are used to improve the mechanical and physical characteristics of PP [2].…”

Section: Introductionmentioning

confidence: 99%

Tensile properties of polypropylene/linear low-density polyethylene/nano-titanium dioxide nanocomposites using a two-level factorial experiment

Daneshpayeh

Ghasemi

2019

Teh. glas. (Online)

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In this paper, a 23 factorial design analysis was used to study the parameters affecting the mechanical characteristics of polypropylene/linear low-density polyethylene/nano-titanium dioxide (PP/LLDPE/TiO2) nanocomposites, and to optimize these factors in order to predict the maximum ultimate tensile strength (UTS), elastic modulus (EM), and yield strength (YS) simultaneously. To do this, two levels of nano-titanium dioxide (TiO2), linear low-density polyethylene (LLDPE) and styrene-ethylene-butylene-styrene (SEBS) as the coupling agent were selected and eight experiments were conducted for every response. The most effective factors influencing the UTS, EM, and YS were found, and acceptable prediction regression models were taken. One noted that nanoparticles increased the elastic modulus. The attendance of high levels of LLDPE and SEBS resulted in a decrease in YS and UTS. Moreover, the optimum values of variables were determined by using the contour plot.

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Study of the photodegradation of nanocomposites containing TiO2 nanoparticles dispersed in polyethylene and in poly(ethylene-co-octadecene)

Cited by 39 publications

References 38 publications

Effect of CaCO3 Nanoparticles on the Mechanical and Photo-Degradation Properties of LDPE

Effect of CaCO3 Nanoparticles on the Mechanical and Photo-Degradation Properties of LDPE

Photodegradation of low‐density polyethylene with prooxidant and photocatalyst

Tensile properties of polypropylene/linear low-density polyethylene/nano-titanium dioxide nanocomposites using a two-level factorial experiment

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