The Addition of Graphene to Polymer Coatings for Improved Weathering

Nuraje, Nurxat; Khan, Shifath Ikram; Misak, Heath Edward; Asmatulu, Ramazan

doi:10.1155/2013/514617

Cited by 35 publications

(22 citation statements)

References 34 publications

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“…Numerous theoretical and experimental studies have demonstrated this capability for carbon nanotubes (CNTs) and similar results have been reported for graphene (G), too . Therefore, both CNTs and graphene have been added in small amount to polymer matrix in order to convey the radical scavenging functionalities to the composite film. In most of the cases, when polymer composites containing a few CNT percentage (0.2–5 wt%) are exposed to strong UV irradiation, at higher temperature (50–60 °C) in oxygen atmosphere, the presence of the filler delay the photooxidation process.…”

Section: Introductionmentioning

confidence: 66%

High‐Performance UV Protective Waterborne Polymer Coatings Based on Hybrid Graphene/Carbon Nanotube Radicals Scavenging Filler

Prosheva

Aboudzadeh

Leal

et al. 2019

Part & Part Syst Charact

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Ultraviolet (UV) degradation is one of the most important challenges of waterborne coatings in exterior applications. One of the ways to address this issue is addition of radical scavenging species within the polymer matrix. Herein, hybrids of graphene (G) and multiwall carbon nanotubes (CNTs) in different ratios are used as radical scavenging species. Evaluated by electron paramagnetic resonance spectroscopy, it is found that the hybrid made of G/CNTs in ratio of 10:1 efficiently captures and quenches the free radicals. The waterborne polymer composites containing 1 wt% of hybrid G/CNT are synthesized by in situ miniemulsion free radical polymerization using a water soluble initiator. However, due to excellent efficiency to capture free radicals, the polymerization performed using water soluble initiators in the presence of 10:1 G/CNT filler is hindered. This is resolved by physical separation of the free radicals and the scavenging materials within different phases by use of oil soluble initiator. The resulting polymer composites, beside having excellent mechanical resistance, present exceptional stability under accelerated aging conditions during 400 h, suppressing almost completely the UV photodegradation. This is attributed to the efficient radical scavenging of the G/CNTs hybrid filler distributed within polymer matrix, resulting in high‐performance UV protective waterborne composite coatings.

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Section: Introductionmentioning

confidence: 66%

High‐Performance UV Protective Waterborne Polymer Coatings Based on Hybrid Graphene/Carbon Nanotube Radicals Scavenging Filler

Prosheva

Aboudzadeh

Leal

et al. 2019

Part & Part Syst Charact

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“…The constancy of crystallinity in the HDPE/graphene nanocomposites may be due to the enhanced stability of the nanocomposites. Graphene can absorb UV radiation and prevent degradation of the polyurethane/graphene coatings …”

Section: Resultsmentioning

confidence: 99%

Photooxidative degradation of graphene‐reinforced high‐density polyethylene nanocomposites

Shehzad

Ahmad

Al‐Harthi

2018

J of Applied Polymer Sci

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Natural weathering of high-density polyethylene (HDPE) and its graphene nanocomposites was studied. The nanocomposites, prepared by in situ polymerization of ethylene, were exposed to the natural environment for 30, 60, and 90 days. The effects of weathering on the crystallinity, melting temperature, and lamellar thickness distribution were studied using differential scanning calorimetry. The changes in chain microstructure and molecular weight were determined by crystallization analysis fractionation and gel permeation chromatography, respectively. The effects of weathering on the dynamic mechanical properties and the morphology of the nanocomposite were also determined. The parent HDPE suffered severe degradation as expected. However, graphene-reinforced HDPE nanocomposites show resistance to degradation. The changes in the crystallinity, lamellar thickness, molecular weight, and dynamic mechanical properties of graphene nanocomposites were less pronounced as compared to the parent HDPE.

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“…In comparison, possibility of migration and physical loss of nanoparticles from polymeric materials is a difficult task owing to their superior interfacial interaction and less susceptibility towards evaporation or leaching . Literature also reports lower extent of degradation with time in case of nano material filled polymers than the pristine one . Thus, for nanocomposite‐based coating, although the UPF value, before weathering, was lower as compared to Tinuvin B 75, but, loss in UPF value with weathering was also found to be significantly lower.…”

Section: Physical Significancementioning

confidence: 95%

Optimal designing of polyurethane‐based nanocomposite system for aerostat envelope

Chatterjee

Butola

Joshi

2016

J of Applied Polymer Sci

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This article reports an optimal designing of thermoplastic polyurethane (TPU) nanocomposite formulation, particularly targeting aerostat envelope for enhanced weathering and gas barrier properties. The synergistic effect of conventional UV protective additive with advanced nano materials (i.e. nanoclay and graphene) on TPU‐based formulations was explored. A series of formulations were prepared in accordance with a mixture design for three components additives (UV stabilizer, nanoclay, and graphene) and coated on to a woven polyester (PET) fabric. The coated systems were evaluated for resistance to UV radiation, resistance to helium gas permeability, and loss in both the properties against accelerated artificial weathering. The composition of the additive mixture was simultaneously optimized by desirability function approach with a view to maximize UV radiation protection and minimize helium gas permeability. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43529.

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The Addition of Graphene to Polymer Coatings for Improved Weathering

Cited by 35 publications

References 34 publications

High‐Performance UV Protective Waterborne Polymer Coatings Based on Hybrid Graphene/Carbon Nanotube Radicals Scavenging Filler

High‐Performance UV Protective Waterborne Polymer Coatings Based on Hybrid Graphene/Carbon Nanotube Radicals Scavenging Filler

Photooxidative degradation of graphene‐reinforced high‐density polyethylene nanocomposites

Optimal designing of polyurethane‐based nanocomposite system for aerostat envelope

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