Manufacture of antibacterial carbon fiber-reinforced plastics (CFRP) using imine-based epoxy vitrimer for medical application

Kim, Wonbin; Kim, Y.; Song, SeungHyeon; Kim, Eun-Jung; Kim, Dong‐Gyun; Jung, Yong Chae; Yu, Woong‐Ryeol; Na, Wonjin; Choi, Yong‐Seok

doi:10.1016/j.heliyon.2023.e16945

Cited by 4 publications

(5 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The synthesis and preparation of epoxy resin using biomass raw materials in whole or in part can reduce the use of petrochemical resources and alleviate the current environmental pressure. , However, for thermosets, the presence of permanent cross-links significantly limits their recyclability; they cannot be recycled after use, meaning that they have a short lifecycle, thus still generating a large amount of solid waste and polluting the environment. Polymer networks with associative covalent adaptive networks (CANs), called vitrimers, are reported to provide a path to polymer circularity for traditional thermosets. , CANs in the epoxy matrix can be reversibly broken and reorganized under certain conditions, thus causing topological rearrangement of their polymer networks, making the material reprocessable, self-healable, and weldable, thus extending the service life of the material.…”

Section: Introductionmentioning

confidence: 99%

Biobased and Recyclable Epoxy Composite with High Thermal Conductivity Based on Disulfide Exchange

Sun,

Xu,

Zou

et al. 2024

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

The demand for thermal management materials is growing due to the rapid development of electronics. However, most thermally conductive composites cannot be recycled after use, resulting in a significant waste of resources and environmental pollution. In this work, a recyclable and reprocessable high thermally conductive epoxy resin composite is developed by utilizing biobased raw materials epoxidized soybean oil (ESO). The recyclability and reprocessability are achieved by disulfide exchange. The thermal conductivity of the matrix is improved by adding boron nitride (BN) fillers, which are further compelled to be aligned in the matrix to fabricate a highly thermally conductive bulk epoxy composite in an oriented direction. Results reveal that a thermal conductivity of 3.01 W m −1 K −1 is achieved in the composites with aligned arrangement BN, which is increased by 32.6% compared to composites with randomly distributed filler. Moreover, due to the disulfide exchange, the matrix can be decomposed under chemical conditions, which allows for the filler to be completely separated through physical filtration for reuse, completing the closed-loop recycling of the filler. This study provides an effective and facile method for the fabrication of biobased thermal management materials and also offers paramount potential for sustainable development.

show abstract

Section: Introductionmentioning

confidence: 99%

Biobased and Recyclable Epoxy Composite with High Thermal Conductivity Based on Disulfide Exchange

Sun,

Xu,

Zou

et al. 2024

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…This scenario has initiated heightened competition within the global market, particularly concerning lightweight components . Consequently, CFRPs have found extensive utilization across diverse domains, including but not limited to the automotive sector, , maritime industries, the aerospace field, , medical technology, − wind energy applications, , robotics, as well as the realm of sports and recreational activities. − The projected worldwide demand for carbon fiber and CFRPs is expected to reach 190 kilotons by the year 2050 . However, there is a concerning estimation that global CFRP waste could escalate to 20 kilotons annually by 2025 .…”

Section: Introductionmentioning

confidence: 99%

Catalytic Recycling of Thermoset Carbon Fiber-Reinforced Polymers

Torkaman,

Bremser,

Wilhelm

2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

We present a one-step method for recycling carbon fiber reinforced polymers produced from prepreg using catalytic chemical solvolysis. This process involves employing Al(NO 3 ) 3 •9H 2 O as an efficient catalyst and dimethylacetamide (DMAc) as a solvent to successfully reclaim carbon fibers from epoxy amine-cured composites. Initially, DMAc infiltrates the compact structure of the cured epoxy, expanding the dimensions of the composite. Subsequently, the Lewis acid catalyst, with the assistance of the nitrate counterion, breaks the C−N bonds in the cured system, as discussed in a proposed mechanism, and releases the carbon fibers from the composite. Two catalysts, Al(NO 3 ) 3 • 9H 2 O and Fe(NO 3 ) 3 •9H 2 O, were compared for their effectiveness in the recycling process. Both catalysts achieved a degradation ratio (DR) of approximately 100%, yet they influenced the carbon fiber properties differently. It was established that a 20% concentration of Al(NO 3 ) 3 •9H 2 O at 160 °C for 5 h resulted in nearly a 100% degradation ratio without causing surface damage to the fibers. The recycled carbon fiber exhibited mechanical and chemical properties comparable to the original ones. Furthermore, the recovered epoxy matrix was repurposed as a cohardener or cobinder for creating a new cured matrix system. The mechanical and thermal properties of the prepared cured-epoxy resin specimens were assessed through tensile and DSC tests. The recycled solvent demonstrated identical properties to the initial solvent, remaining suitable for reuse in the recycling process.

show abstract

“…Carbon fiber reinforced polymer (CFRP) is a kind of highly engineered material that offers high specific modulus and high specific strength . CFRP has superior mechanical, thermal, and chemical properties, and is a kind of ideal lightweight material. , CFRP is widely used in the main, functional, protective, and auxiliary components of various types of space vehicles in the aerospace industry. , It may be the route one must take to the development trend of high bearing capacity, high stability, long life, energy saving, and emission reduction in automobiles, railway transportation, national defense, and other industrial fields. , In addition, CFRP has been used in medical implants − and composite structural supercapacitors. − In the above industrial, medical, or supercapacitor applications, CFRP needs not only to be cut and drilled − but also to be surface-treated. − This may be due to the intrinsic surface hydrophobicity of CFRP, which leads to low bonding strength when used in combination with other materials or produces large friction resistance in close contact with human tissue. Hence, it is urgent and challenging to develop a simple, effective, controllable, and high-precision surface treatment strategy for CFRP.…”

Section: Introductionmentioning

confidence: 99%

“… 3 , 4 It may be the route one must take to the development trend of high bearing capacity, high stability, long life, energy saving, and emission reduction in automobiles, railway transportation, national defense, and other industrial fields. 1 , 5 In addition, CFRP has been used in medical implants 6 − 10 and composite structural supercapacitors. 11 − 13 In the above industrial, medical, or supercapacitor applications, CFRP needs not only to be cut and drilled 14 − 16 but also to be surface-treated.…”

Section: Introductionmentioning

confidence: 99%

Controllable Fabrication of Hydrophilic Surface Micro/Nanostructures of CFRP by Femtosecond Laser

Zuo,

Liu,

et al. 2024

ACS Omega

View full text Add to dashboard Cite

Carbon fiber reinforced polymer (CFRP), a highly engineered lightweight material with superior properties, is widely used in industrial fields, such as aerospace, automobile, and railway transportation, as well as medical implants and supercapacitor. This work presents an effective surface treatment method for the controllable fabrication of hydrophilic surface micro/nanostructures of CFRP through femtosecond laser processing. Selective removal of the epoxy resin and leaving the carbon fibers exposed are achieved when CFRP is weakly ablated by a femtosecond laser. The diameters and structures of the carbon fibers can be controlled by adjusting the laser processing parameters. Three-dimensional surface micro/nanostructures are processed when CFRP is strongly ablated by a femtosecond laser. Meanwhile, the transformation of the sp 2 orbitals to sp 3 orbitals of graphitic carbons of carbon fibers is induced by a femtosecond laser. Moreover, the investigation of surface roughness and wettability of femtosecond laser-processed CFRP indicates increased roughness and excellent hydrophilicity (a contact angle of 28.1°). This work reveals the effect of femtosecond laser processing on the regulation of the physicochemical properties of CFRP, which can be applicable to surface treatment and performance control of other fiber-resin composites. The excellent hydrophilicity will be conducive to the combination of CFRP with other materials or to reducing the friction resistance of CFRP used in medical implants.

show abstract

Manufacture of antibacterial carbon fiber-reinforced plastics (CFRP) using imine-based epoxy vitrimer for medical application

Cited by 4 publications

References 44 publications

Biobased and Recyclable Epoxy Composite with High Thermal Conductivity Based on Disulfide Exchange

Biobased and Recyclable Epoxy Composite with High Thermal Conductivity Based on Disulfide Exchange

Catalytic Recycling of Thermoset Carbon Fiber-Reinforced Polymers

Controllable Fabrication of Hydrophilic Surface Micro/Nanostructures of CFRP by Femtosecond Laser

Contact Info

Product

Resources

About