Effect of sepiolite filler on mechanical behaviour of a bisphenol A-based epoxy system

Zotti, Aldobenedetto; Borriello, Anna; Martone, Alfonso; Antonucci, Vincenza; Giordano, M.; Zarrelli, Mauro

doi:10.1016/j.compositesb.2014.07.017

Cited by 33 publications

(16 citation statements)

References 18 publications

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“…Thus, the addition up to 2 % of sepiolite (with the different resulting dispersions) has no significant effect on the thermal stability of the epoxy nanocomposites with a thermal stability more than 300 °C. This tendency is in agreement with other epoxy/sepiolite systems [30] [51] due to the rigidity of sepiolite fibbers. E' moduli also show a drop of about two decades around the room temperature for all the systems.…”

Section: Thermomechanical Properties Of Secondary Nanocompositessupporting

confidence: 93%

Self-organization of sepiolite fibbers in a biobased thermoset

Falco¹,

Giulieri²,

Volle³

et al. 2019

Composites Science and Technology

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Unusual self-organization of sepiolite fibbers have been found during the synthesis of sustainable nanocomposites. These auto-structured networks are synthesized starting with an epoxidized linseed oil (ELO), a bio-based hardener of dicarboxylic class and sepiolite fibbers. For the first time, the auto-organization of sepiolite fibbers into empty or solid spheres insight a bio-based thermoset matrix have been highlighted and synthesized. The influence of the thermoset formulation and the sepiolite concentration on self-organization are emphasized. The thermomechanical properties of nanocomposites have been investigated highlighting an increasing of elastic modulus from 30 to 40 % in the vitreous states and from 25 to 45 % in the rubbery state. This peculiar organization and behaviour of sepiolite, similar to that of surfactants, is of great interest as fundamental, applicative and industrial level.

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Section: Thermomechanical Properties Of Secondary Nanocompositessupporting

confidence: 93%

Self-organization of sepiolite fibbers in a biobased thermoset

Falco¹,

Giulieri²,

Volle³

et al. 2019

Composites Science and Technology

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“…The process by which chemical bonding is achieved is called curing, where the fluid resin changes to a solid form. Among curing agents, various amines [10], anhydrides [11] and Lewis acids [12] are employed to cure the epoxies. The properties of the resulting epoxide resins ( Figure 5) depend upon the epoxy, the curing agent, and the curing process.…”

Section: Epoxy Resins and Failure Modesmentioning

confidence: 99%

Fracture Toughening Mechanisms in Epoxy Adhesives

Zotti¹,

Zuppolini²,

Zarrelli³

et al. 2016

Adhesives - Applications and Properties

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Fracture toughness is generally considered as the main properties of a polymer or a polymer adhesive system for measuring the material resistance to the extension of cracks. Epoxy adhesives are generally brittle in nature; however, the addition of a second dispersed phase could induce a remarkable increase of damage tolerance performance by an enhancement of the material fracture toughness. The fracture behavior of a filled epoxy resin is strongly affected by the dimensions, the shape, and the chemical nature of the considered filler. The chapter describes the different toughening mechanisms for polymer adhesives with special attention toward innovative nanofiller such as graphene nanoplatelets and hyperbranched polymer nanoparticles.

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“…Recently, sepiolite has been used for the preparation of nanocomposites using different polymers as matrix such as epoxy (Zotti, Borriello, Martone, Antonucci, Giordano & Zarrelli, 2014;Zheng & Zheng, 2006), polypropylene (Bilotti, Fischer & Pejis, 2008;Morales, Ojeda, Linares & Acosta, 1992; Acosta, Ojeda, Morales & Linares, 1986), polyimide (Yu, Qi, Zhan, Wu, Yang & Wu, 2011), polyethylene (Arroyo, Perez & Wigo, 1986;Alonso, Martini, Iannoni, Terenzi, Kenny & Barbosa, 2015;Carrero, Grieken, Suarez & Paredes, 2012), ethylene vinyl acetate (Huang, Chen, Yi & Wang, 2010;Bidsorkhi, Soheilmoghaddam, Pour, Adelnia & Mohamad, 2014), chitosan (Darder, Lopez-Blanco, Aranda, Aznar, Bravo & Ruiz-Hitzky, 2006), polyvinylalcohol (Alkan & Benlikaya, 2009;Killeen, Frydrych & Chen, 2012;Wicklein, Aranda, Ruiz-Hitzky & Darder, 2013), polyurethane (Chen, Zheng, Sun & Jia, 2007;Chen, Zeng, Xiao, Zheng, Ke & Li, 2011) and polyamid 6 Bilotti, Duquesne, Deng, Zhang, Quero, Georgiades, Fischer, Dubois & Pejis, 2014). However, sepiolite effects of resol resins has not been studied before.…”

Section: Introductionmentioning

confidence: 99%

In Situ Preparation of Resol/Sepiolite Nanocomposites

Alkan

Kızılcan

2015

Procedia - Social and Behavioral Sciences

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In this study, in situ modified phenol formaldehyde resins were prepared from clay (sepiolite) in the presence of base catalyst. Different clay contents (3 wt%, 5wt%, 8 wt%, 10 wt%, 15wt%, 20wt%, 30wt% and 50 wt%) were used to produce sepiolite modified resol nanocomposite resins (SEP-PFNCRs). SEP-PFNCRs were partially cured by heat and the effects of the curing process and the clay content in the resol resin were determined on the spectroscopic, thermal, and microscopic properties of the final products. The structures of the specimens were characterized by means of Fourier Transform Infrared (FTIR-ATR) spectroscopy. Thermal properties of the samples were determined with Thermogravimetric Analyzer (TGA). The dispersion of sepiolite in the resol nanocomposites were examined by X-ray Diffraction (XRD). The obtained samples were also characterized morphologically by Scanning Electron Microscope (SEM).

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Effect of sepiolite filler on mechanical behaviour of a bisphenol A-based epoxy system

Cited by 33 publications

References 18 publications

Self-organization of sepiolite fibbers in a biobased thermoset

Self-organization of sepiolite fibbers in a biobased thermoset

Fracture Toughening Mechanisms in Epoxy Adhesives

In Situ Preparation of Resol/Sepiolite Nanocomposites

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