Novel Growth of Multiscale Carbon Nanofilaments on Carbon and Glass Fibers

Al-Haik, Marwan; Dai, Jin; García, Daniel; Chavez, Jeremy; Taha, Mahmoud Reda; Luhrs, Claudia; Phillips, Jonathan

doi:10.1166/nnl.2009.1027

Cited by 8 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The de-sized fibers are afterward employed in a three-layer polymer matrix composite to further investigate the effect of the sizing removal on the mechanical properties of the composite. Carbon nanotubes were grown utilizing the graphitic structure by design (GSD) method, detailed elsewhere [15,[40][41][42][43].…”

Section: Samples Preparationmentioning

confidence: 99%

“…The growth of high aspect ratio nanotubes on the fiber surface induces less stress concentration in the fiber since they induce stiffness gradient from the fiber to the matrix [12]. The growth of 1D carbon nanostructures (multi and single wall carbon nanotubes) and ZnO nanorods on commercially available carbon fibers has been demonstrated via different studies [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Viscoplastic characterization and modeling of hybrid carbon fiber/carbon nanotubes reinforced composites

Skandani

Al-Haik

2016

Composites Part B: Engineering

View full text Add to dashboard Cite

This investigation illuminates the effect of surface grown carbon nanotubes (CNTs) on the viscoplastic behavior of fiber reinforced plastics (FRPs). The study demonstrates the feasibility of growing CNTs on conventional woven carbon fibers without degrading the fibers structural properties. The subsequent hierarchal reinforcement was utilized to fabricate laminated FRPs. The viscoplastic behaviors of the hybrid composites were investigated through series of stress relaxation and creep tests at different thermomechanical environments. The results of the experimental tests were utilized to both construct and validate a phenomenological viscoplastic constitutive model of the hybrid FRPs. The experiments and the model predictions established that surface grown CNTs could enhance the composite resistance to viscoplastic deformation.

show abstract

Section: Samples Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Viscoplastic characterization and modeling of hybrid carbon fiber/carbon nanotubes reinforced composites

Skandani

Al-Haik

2016

Composites Part B: Engineering

View full text Add to dashboard Cite

show abstract

“…Nonconductive fabrics, however, need to be transformed into conductive ones. Several methods were used, such as using carbon nanotubes (CNTs) growth on glass fibers [29][30][31][32] or directly coating the fibers with carbon nanomaterials [33]. In situ polymerization of pyrrole with fabrics in the reaction medium is a promising approach that results in electrically conductive polypyrrole (PPy)-coated fabrics.…”

Section: Introductionmentioning

confidence: 99%

Cognizant Fiber-Reinforced Polymer Composites Incorporating Seamlessly Integrated Sensing and Computing Circuitry

Jaradat,

Duran,

Murcia

et al. 2023

Polymers

Self Cite

View full text Add to dashboard Cite

Structural fiber-reinforced polymer (FRP) composite materials consisting of a polymer matrix reinforced with layers of high-strength fibers are used in numerous applications, including but not limited to spacecraft, vehicles, buildings, and bridges. Researchers in the past few decades have suggested the necessary integration of sensors (e.g., fiber optic sensors) in polymer composites to enable health monitoring of composites’ performance over their service lives. This work introduces an innovative cognizant composite that can self-sense, compute, and implement decisions based on sensed values. It is a critical step towards smart, resilient infrastructure. We describe a method to fabricate textile sensors with flexible circuitry and a microcontroller within the polymer composite, enabling computational operations to take place in the composite without impacting its integrity. A microstructural investigation of the sensors showed that the amount of oxidative agent and soaking time of the fabric play a major role in the adsorption of polypyrrole (PPy) on fiberglass (FG). XPS results showed that the 10 g ferric chloride solution with 6 h of soaking time had the highest degree of protonation (28%) and, therefore, higher adsorption of PPy on FG. A strain range of 30% was achieved by examining different circuitry and sensor designs for their resistance and strain resolution under mechanical loading. A microcontroller was added to the circuit and then embedded within a composite material. This composite system was tested under flexural loading to demonstrate its self-sensing, computing, and actuation capabilities. The resulting cognizant composite demonstrated the ability to read resistance values and measure strain using the embedded microcontroller and autonomously actuate an LED light when the strain exceeds a predefined limit of 2000 µε. The application of the proposed FRP system would provide in situ monitoring of structural composite components with autonomous response capabilities, as well as reduce manufacturing, production, and maintenance costs.

show abstract

“…Recently, we devised a method to create complex graphitic structures at uniquely low temperatures, Graphitic Structures by Design (GSD) [30,34,37,38]. The unique chemistry of the process not only allows creating graphite at 'record low' temperatures, but also permits the generation of designed graphitic shapes and structures.…”

Section: Introductionmentioning

confidence: 99%

Hybrid carbon fiber/carbon nanotube composites for structural damping applications

et al. 2013

View full text Add to dashboard Cite

Carbon nanotubes (CNTs) were grown on the surface of carbon fibers utilizing a relatively low temperature synthesis technique; graphitic structures by design (GSD). To probe the effects of the synthesis protocols on the mechanical properties, other samples with surface grown CNTs were prepared using catalytic chemical vapor deposition (CCVD). The woven graphite fabrics were thermally shielded with a thin film of SiO2 and CNTs were grown on top of this film. Raman spectroscopy and electron microscopy revealed the grown species to be multi-walled carbon nanotubes (MWCNTs). The damping performance of the hybrid CNT-carbon fiber-reinforced epoxy composite was examined using dynamic mechanical analysis (DMA). Mechanical testing confirmed that the degradations in the strength and stiffness as a result of the GSD process are far less than those encountered through using the CCVD technique and yet are negligible compared to the reference samples. The DMA results indicated that, despite the minimal degradation in the storage modulus, the loss tangent (damping) for the hybrid composites utilizing GSD-grown MWCNTs improved by 56% compared to the reference samples (based on raw carbon fibers with no surface treatment or surface grown carbon nanotubes) over the frequency range 1-60 Hz. These results indicated that the energy dissipation in the GSD-grown MWCNTs composite can be primarily attributed to the frictional sliding at the nanotube/epoxy interface and to a lesser extent to the stiff thermal shielding SiO2 film on the fiber/matrix interface.

show abstract

Novel Growth of Multiscale Carbon Nanofilaments on Carbon and Glass Fibers

Cited by 8 publications

References 12 publications

Viscoplastic characterization and modeling of hybrid carbon fiber/carbon nanotubes reinforced composites

Viscoplastic characterization and modeling of hybrid carbon fiber/carbon nanotubes reinforced composites

Cognizant Fiber-Reinforced Polymer Composites Incorporating Seamlessly Integrated Sensing and Computing Circuitry

Hybrid carbon fiber/carbon nanotube composites for structural damping applications

Contact Info

Product

Resources

About