Effect of graphene nano-platelet morphology on the elastic modulus of soft and hard biopolymers

Cataldi, Pietro; Bayer, Ilker S.; Nanni, Giorgio; Bonaccorso, Francesco; Pellegrini, Vittorio; Castillo, Antonio Esaù Del Rio; Ricciardella, Filiberto; Artyukhin, Sergey; Tronche, Marc-Adrien; Gogotsi, Yury; Cingolani, R.

doi:10.1016/j.carbon.2016.08.026

Cited by 45 publications

(48 citation statements)

References 72 publications

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“…Papadopoulou et al employed commercially available GnPs obtained from Directa Plus (Lomazzo, Italy) (grade Ultra g+). Such GnPs were characterized in depth in our previous work [65]. Recently, Hameed and coauthors [53] proved that the use of ionic liquid induces flexibility in brittle thermoset matrices, and improves the dispersion of GnPs.…”

Section: Type Of Sample Manufacturing Techniques Ec (S/m) Sr (ω/Sq) Dmentioning

confidence: 91%

“…The GnPs employed by our group for these studies were provided by Directa Plus (grade Ultra g+). For details on the lateral size and thickness of such nanoflakes, see this report [65]. Recently, Oh et al [61] fabricated GnPs-based transparent electrodes for flexible optoelectronics.…”

Section: Environmentally-friendly Graphene-based Materials and Devicesmentioning

confidence: 99%

“…The GnPs employed by our group for these studies were provided by Directa Plus (grade Ultra g+). For details on the lateral size and thickness of such nanoflakes, see this report [65]. Another green nanocomposite for flexible electronics was lately proposed by Liu and collaborators [64].…”

Section: Environmentally-friendly Graphene-based Materials and Devicesmentioning

confidence: 99%

“…GnPs integrate the excellent mechanical characteristics of carbon nanotubes with the multi-flakes structure of clays, which can impart superior structural property improvements [150]. Indeed, they were shown to perform significantly better than these nanofillers in enhancing the mechanical properties of nanocomposites such as tensile strength, elastic modulus, fracture toughness, fracture energy, and resistance to fatigue and crack growth [65,152], due to their higher compatibility with polymers matrix [153].…”

Section: Advanced Reinforced Graphene Nanoplatelet-based Bio-nanocompmentioning

confidence: 99%

“…PLA and Mater-bi ® (a blend of PCL and starch) were reinforced with GnPs in our recent work [65]. These two bio-polyesters were mixed with various types of few layer graphene (FLG) and commercially available GnPs.…”

Section: Graphene Nanoplatelets Reinforced Polyestersmentioning

confidence: 99%

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Graphene Nanoplatelets-Based Advanced Materials and Recent Progress in Sustainable Applications

2018

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Graphene is the first 2D crystal ever isolated by mankind. It consists of a single graphite layer, and its exceptional properties are revolutionizing material science. However, there is still a lack of convenient mass-production methods to obtain defect-free monolayer graphene. In contrast, graphene nanoplatelets, hybrids between graphene and graphite, are already industrially available. Such nanomaterials are attractive, considering their planar structure, light weight, high aspect ratio, electrical conductivity, low cost, and mechanical toughness. These diverse features enable applications ranging from energy harvesting and electronic skin to reinforced plastic materials. This review presents progress in composite materials with graphene nanoplatelets applied, among others, in the field of flexible electronics and motion and structural sensing. Particular emphasis is given to applications such as antennas, flexible electrodes for energy devices, and strain sensors. A separate discussion is included on advanced biodegradable materials reinforced with graphene nanoplatelets. A discussion of the necessary steps for the further spread of graphene nanoplatelets is provided for each revised field.

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Section: Type Of Sample Manufacturing Techniques Ec (S/m) Sr (ω/Sq) Dmentioning

confidence: 91%

Section: Environmentally-friendly Graphene-based Materials and Devicesmentioning

confidence: 99%

“…The GnPs employed by our group for these studies were provided by Directa Plus (grade Ultra g+). For details on the lateral size and thickness of such nanoflakes, see this report [65]. Another green nanocomposite for flexible electronics was lately proposed by Liu and collaborators [64].…”

Section: Environmentally-friendly Graphene-based Materials and Devicesmentioning

confidence: 99%

Section: Advanced Reinforced Graphene Nanoplatelet-based Bio-nanocompmentioning

confidence: 99%

Section: Graphene Nanoplatelets Reinforced Polyestersmentioning

confidence: 99%

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Graphene Nanoplatelets-Based Advanced Materials and Recent Progress in Sustainable Applications

2018

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Green Biocomposites for Thermoelectric Wearable Applications

Cataldi

Cassinelli

Heredia‐Guerrero

et al. 2019

Adv Funct Materials

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Nowadays, the materials commonly used to fabricate thermoelectric devices are tellurium, lead and germanium. These materials ensure from one side the best thermoelectric performances, but exhibit drawbacks in terms of availability, sustainability, cost and manufacturing complexity. Moreover, they do not guarantee a safe and cheap implementation in wearable thermoelectric applications. Here, p-and n-type flexible thermoelectric textiles are produced with sustainable and low-cost materials through green and scalable processes. Cotton is functionalized with inks made with biopolyester and carbon-nanomaterials. Depending on the nanofiller, i.e. graphene nanoplatelets, carbon nanotubes or carbon nanofibers, positive or negative Seebeck coefficient values are obtained, achieving also a remarkable value of electrical conductivity of 55 S cm -1 using carbon nanotubes. The best bending and washing stability are registered for the carbon nanofibers-based biocomposites, which increase their electrical resistance by 5 times after repeated bending cycles and only of the 30% after washing. Finally, in-plane flexible thermoelectric generators are fabricated and characterized coupling the best p-and n-type materials, achieving an output voltage of ~ 1.65 mV and a maximum output power of ~ 1.0 nW by connecting only 2 p/n thermocouples at a temperature difference of 70°C.

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Sustainable Electronics Based on Crop Plant Extracts and Graphene: A “Bioadvantaged” Approach

Cataldi

Heredia‐Guerrero

Guzmán-Puyol

et al. 2018

Advanced Sustainable Systems

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In today's fast‐paced and well‐connected world, consumer electronics are evolving rapidly. As a result, the amount of discarded electronic devices is becoming a major health and environmental concern. The rapid expansion of flexible electronics has the potential to transform consumer electronic devices from rigid phones and tablets to robust wearable devices. This means increased use of plastics in consumer electronics and the potential to generate more persistent plastic waste for the environment. Hence, today, the need for flexible biodegradable electronics is at the forefront of minimizing the mounting pile of global electronic waste. A “bioadvantaged” approach to develop a biodegradable, flexible, and application‐adaptable electronic components based on crop components and graphene is reported. More specifically, by combining zein, a corn‐derived protein, and aleuritic acid, a major monomer of tomato cuticles and sheellac, along with graphene, biocomposite conductors having low electrical resistance (≈10 Ω sq−1) with exceptional mechanical and fatigue resilience are fabricated. Further, a number of high‐performance electronic applications, such as THz electromagnetic shielding, flexible GHz antenna construction, and flexible solar cell electrode, are demonstrated. Excellent performance results are measured from each application comparable to conventional nondegrading counterparts, thus paving the way for the concept of “plant‐e‐tronics” towards sustainability.

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Effect of graphene nano-platelet morphology on the elastic modulus of soft and hard biopolymers

Cited by 45 publications

References 72 publications

Graphene Nanoplatelets-Based Advanced Materials and Recent Progress in Sustainable Applications

Graphene Nanoplatelets-Based Advanced Materials and Recent Progress in Sustainable Applications

Green Biocomposites for Thermoelectric Wearable Applications

Sustainable Electronics Based on Crop Plant Extracts and Graphene: A “Bioadvantaged” Approach

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