Degradation of carboxylated styrene butadiene rubber based water born paints. Part 1: Effect of talc filler and titania pigment on UV stability

Jubete, Elena; Liauw, Christopher M.; Jacobson, Karin; Allen, Norman S.

doi:10.1016/j.polymdegradstab.2007.04.016

Cited by 19 publications

(10 citation statements)

References 11 publications

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“…Photo‐degradation is most likely to occur when rubber components are exposed to strong sunlight in many practical applications, resulting in a reduction of their mechanical properties. The mechanisms of photo‐oxidation in rubbers have been extensively studied by many researchers 2–7. It was found that main chain scission, crosslinking process, and oxidation functions dominate the degradation of rubbers after exposure to some durations of ultraviolet irradiation.…”

Section: Introductionmentioning

confidence: 99%

Effects of ultraviolet irradiation on the static and dynamic properties of neoprene rubbers

Chou

Huang

2008

J of Applied Polymer Sci

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Rubbers deteriorate when they are exposed to ultraviolet irradiation for long periods of time. By conducting a series of hardness measurements and simple tension tests, the static properties of neoprene rubbers before and after exposure to various durations of ultraviolet irradiation were first measured. It is found that the Shore A hardness and tensile modulus of neoprene rubbers after exposure to ultraviolet irradiation are increased but their elongation at break, tensile strength, and energy to break are significantly decreased. On the basis of a complex spring model of a vibration system, the dynamic shear properties of neoprene rubbers before and after exposure to different durations of ultraviolet irradiation were then determined from the experimental results of dynamic transmissibility tests. It is also found that the storage modulus, loss modulus, and loss factor of neoprene rubbers are drastically affected by the duration of ultraviolet irradiation they experienced.

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Section: Introductionmentioning

confidence: 99%

Effects of ultraviolet irradiation on the static and dynamic properties of neoprene rubbers

Chou

Huang

2008

J of Applied Polymer Sci

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“…Jubete et al30 used the ratio of the intensity of the carbonyl band (1715 cm −1 ) and the aromatic vibration (1492 cm −1 ) to evaluate the catalytic photodegradation efficiency [eq. (1)], which was referred to as the carbonyl index (CI).…”

Section: Resultsmentioning

confidence: 99%

Comparison of the nanoparticles performance in the photocatalytic degradation of a styrene–butadiene rubber nanocomposite

Arantes

Sala

Leite

et al. 2012

J of Applied Polymer Sci

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Much has been talking about the advantages of polymeric nanocomposites, but little is known about the influence of nanoparticles on the stability of these materials. In this sense, we studied the influence of both oxides of zirconium and titanium, known to have photocatalytic properties, as well as the influence of synthetic clay Laponite on the photodegradation of styrene–butadiene rubber (SBR). SBR nanocomposites were prepared by the colloidal route by mixing commercial polymer lattices and nanometric anatase TiO2, monoclinic ZrO2 or exfoliated Laponite clays colloidal suspensions. To better understand the degradation mechanisms that occur in these nanocomposites, the efficiency of different photocatalysts under ultraviolet radiation was monitored by FT‐IR and UV–vis spectroscopies and by differential scanning calorimetric. It was observed that TiO2 and ZrO2 nanoparticles undoubtedly acted as catalysts during the photodegradation process with different efficiencies and rates. However, when compared to pure SBR samples, the polymer degradation mechanism was unaffected. Unlike studies with nanocomposites montmorillonite, exfoliated laponite clay effectively acts as a photostabilizer of polymer UV photodegradation. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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“…This showed the role of coated TÍO2 in the protection of the matrix from the photooxidation. Jubete et al [31] who worked on the degradation of carboxylated SBR composites at k > 254 nm in presence of coated . TÍO2 pigment observed that TÍO2 protect the matrix by absorbing UV radiation.…”

Section: Physical Characterizationmentioning

confidence: 99%

“…This leads to the formation of a three dimensional network by crosslinking process. The oxidation mechanism and crosslinking process for diene rubber lead to a physicochemical modification of the matrix and a loss of mechanical properties [18.19], Many additives could be incorporated inside the polymer and can either protect the polymer or degrade it during ageing [20][21][22], For example, the incorporation of carbon black [23.24] or TÍO2 may play a role of UV absorber and protect the matrix from photo-oxidative degradation [25][26][27][28][29][30], Jubete et al [31] investigated the effect of talc filler and coated TÍO2 pigment during the photo-oxidation of carboxylated styrene butadiene rubber, TÍO2 significantly retarded the surface photo-oxidation evidenced by a slow growth of the carbonyl absorption bands in infra-red spectra. Alumina and zirconia form a barrier at surface of TÍO2 acting as a space in which deactivation and recombination of electrons and holes take place, this played a role of screen effect.…”

Section: Introductionmentioning

confidence: 99%

Effect of Coated Rutile TiO2 and Disazopyrazolone Dye Additives on Unvulcanized Styrene Butadiene Rubber During Photo-Ageing

Mertz

Hassouna

Toniazzo

et al. 2011

Journal of Engineering Materials and Technology

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The effect of coated rutile titanium dioxide (TiOi) and a disazopyrazolone dye (azo dye) on the mechanism and the kinetic of photo-oxidation of unvulcanized styrene butadiene rubber (SBR) composites under accelerated UV-visible irradiation (À > 290 nm at 35 °C) has been investigated using several techniques such as infrared spectroscopy, UV-visible spectrophotometry, and gel fraction measurements. Different photo-products resulting from the photo-ageing such as alcohol, ketone, or acids as well as cross-linked network were identified. The incorporation of TÍO2 rutile and an azo dye into the matrix did not modify the mechanism of photo-oxidation. However, they have a significant effect on the kinetic of photoproducts accumulation. Both fillers protect the matrix from photooxidation. TÍO2 rutile, thanks to its inorganic coating at the surface, dissipates part of the UV-visible radiation received by the polymer. The activity mechanism of azo dye consisting of a combination of its function as an antioxidant and light absorber, presents a better stabilizing effect compared with TiO: rutile.

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Degradation of carboxylated styrene butadiene rubber based water born paints. Part 1: Effect of talc filler and titania pigment on UV stability

Cited by 19 publications

References 11 publications

Effects of ultraviolet irradiation on the static and dynamic properties of neoprene rubbers

Effects of ultraviolet irradiation on the static and dynamic properties of neoprene rubbers

Comparison of the nanoparticles performance in the photocatalytic degradation of a styrene–butadiene rubber nanocomposite

Effect of Coated Rutile TiO2 and Disazopyrazolone Dye Additives on Unvulcanized Styrene Butadiene Rubber During Photo-Ageing

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