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151.

Dispersions of partially reduced graphene oxide in various organic solvents and polymers

Hye Min Kim, Seo Gyun Kim, Heon Sang Lee 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 8 55-62 (8 pages)

Hye Min Kim, Seo Gyun Kim, Heon Sang Lee 저
...
- 3,000원
We report on the dispersion state of partially reduced graphene oxide (PRGO) in organic solvents, namely methyl ethyl ketone, ethyl acetate, methylene chloride, toluene, and xylene, by controlling the carbon to oxygen (C/O) atomic ratio of the PRGOs. A two-phase solvent exchange method is also proposed to transfer PRGO from water to an aprotic solvent, such as methyl ethyl ketone. We achieve relatively good dispersion in aprotic and non-polar solvents by controlling the C/O atomic ratio of the...
152.

EMI shielding effectiveness and mechanical properties of MWCNTs-reinforced biodegradable epoxy matrix composites

Yoon-Ji Yim, Dong Chul Chung, Soo-Jin Park 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 4 36-41 (6 pages)

Yoon-Ji Yim, Dong Chul Chung, Soo-Jin Park 저
...
- 3,000원
Biodegradable epoxy (B-epoxy) was prepared from diglycidyl ether of bisphenol A and epoxidized linseed oil. The mechanical properties of B-epoxy composites reinforced with multi-walled carbon nanotubes (MWCNTs/B-epoxy) were examined by employing dynamic mechanical analysis, critical stress intensity factor (KIC) tests, and impact strength tests. The electromagnetic interference shielding effectiveness (EMI-SE) of the composites was evaluated using reflection and absorption methods. Mechanical...
153.

Three-dimensional porous graphene materials for environmental applications

Muruganantham Rethinasabapathy, Sung-Min Kang, Sung-Chan Jang, Yun Suk Huh 한국탄소학회 Carbon Letters 13 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 1 1-13 (13 pages)

Muruganantham Rethinasabapathy, Sung-Min Kang, Sung-Chan Jang, Yun Suk Huh 저
...
- 4,200원
Porous materials play a vital role in science and technology. The ability to control their pore structures at the atomic, molecular, and nanometer scales enable interactions with atoms, ions and molecules to occur throughout the bulk of the material, for practical applications. Three-dimensional (3D) porous carbon-based materials (e.g., graphene aerogels/hydrogels, sponges and foams) made of graphene or graphene oxide-based networks have attracted considerable attention because they offer low...
154.

Effect of fiber-matrix adhesion on the fracture behavior of a carbon fiber reinforced thermoplastic-modified epoxy matrix

H.J. Carrillo-Escalante, A. ?lvarez-Castillo, A. Valadez-Gonz?lez, P. J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2016, Vol.19 6 47-56 (10 pages)

H.J. Carrillo-Escalante, A. ?lvarez-Castillo, A. Valadez-Gonz?lez, P. J. Herrera-Franco 저
...
- 3,000원
In this study, the fracture behavior of a thermoplastic-modified epoxy resin reinforced with continuous carbon fibers for two levels of fiber-matrix adhesion was performed. A carbon fiber with commercial sizing was used and also treated with a known silane, (3-glycidoxy propyl trimethoxysilane) coupling agent. Toughness was determined using the double cantilever test, together with surface analysis after failure using scanning electron microscope. The presence of polysulfone particles improved...
155.

Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites

Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)

Young Sil Lee, Kwan Han Yoon 저
...
- 3,000원
Multi-walled carbon nanotube (MWCNT)/polycarbonate (PC) nanocomposite was prepared by direct melt mixing to investigate the effect of the shear rate on the surface resistivity of the nanocomposites. In this study, an experiment was carried out to observe the shear induced orientation of the MWCNT in the polymer matrix using a very simple melt flow indexer with various loads. The compression-molded, should be eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8...
156.

Overlook of current chemical vapor deposition-grown large single-crystal graphene domains

Kyung Tae Park, Taehoon Kim, Chong Rae Park 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.3 1 151-161 (11 pages)

Kyung Tae Park, Taehoon Kim, Chong Rae Park 저
...
- 4,000원
Exceptional progress has been made with chemical vapor deposition (CVD) of graphene in the past few years. Not only has good monolayer growth of graphene been achieved, but large-area synthesis of graphene sheets has been successful too. However, the polycrystalline nature of CVD graphene is hampering further progress as graphene property degrades due to presence of grain boundaries. This review will cover factors that affect nucleation of graphene and how other scientists sought to obtain large...
157.

Facile preparation of self-assembled wool-based graphene hydrogels by electron beam irradiation

Mira Park, Bishweshwar Pant, Jawun Choi, Yong Wan Park, Chohye Lee, Hye Kyoung Shin, Soo-Jin Park4, Hak-Yong Kim 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.2 11 136-141 (6 pages)

Mira Park, Bishweshwar Pant, Jawun Choi, Yong Wan Park, Chohye Lee, Hye Kyoung Shin, Soo-Jin Park4, Hak-Yong Kim 저
...
- 3,000원
Three dimensional self-assembled graphene hydrogels were easily fabricated by electron beam irradiation (EBI) using an aqueous solution of wool/poly(vinyl alcohol) and graphene oxide (GO). After exposure to various levels of EBI radiation, the highly porous, self-assembled, wool-based graphene hydrogels were characterized using scanning electron microscopy and Fourier-transform infrared spectroscopy; to determine the gel fraction, degree of swelling, gel strength, kinetics-of-swelling analyses...
158.

Superhydrophobic carbon-based materials: a review of synthesis, structure, and applications

Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 16 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.2 5 89-104 (16 pages)

Long-Yue Meng, Soo-Jin Park 저
...
- 4,500원
Materials with appropriate surface roughness and low surface energy can form superhydrophobic surfaces, displaying water contact angles greater than 150°. Superhydrophobic carbon-based materials are particularly interesting due to their exceptional physicochemical properties. This review discusses the various techniques used to produce superhydrophobic carbon-based materials such as carbon fibers, carbon nanotubes, graphene, amorphous carbons, etc. Recent advances in emerging fields such as...
159.

Effect of chemically reduced graphene oxide on epoxy nanocomposites for flexural behaviors

Seul-Yi Lee, Mi-Hwa Chong, Mira Park, Hak-Yong Kim, Soo-Jin Park 한국탄소학회 Carbon Letters 4 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 9 67-70 (4 pages)

Seul-Yi Lee, Mi-Hwa Chong, Mira Park, Hak-Yong Kim, Soo-Jin Park 저
...
- 1,500원
In this work, nanocomposites of epoxy resin and chemically reduced graphene oxide (RGO) were prepared by thermal curing process. X-ray diffractions confirmed the microstructural properties of RGO. Differential scanning calorimetry was used to evaluate the curing behaviors of RGO/epoxy nanocomposites with different RGO loading amounts. We investigated the effect of RGO loading amounts on the mechanical properties of the epoxy nanocomposites. It was found that the presence of RGO improved both...
160.

Microwave heating of carbon-based solid materials

Teawon Kim, Jaegeun Lee, Kun Hong Lee 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 2 15-24 (10 pages)

Teawon Kim, Jaegeun Lee, Kun Hong Lee 저
...
- 3,000원
As a part of the electromagnetic spectrum, microwaves heat materials fast and efficiently via direct energy transfer, while conventional heating methods rely on conduction and convection. To date, the use of microwave heating in the research of carbon-based materials has been mainly limited to liquid solutions. However, more rapid and efficient heating is possible in electron-rich solid materials, because the target materials absorb the energy of microwaves effectively and exclusively....

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