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Effects of Inoculum Level and Pressure Pulse on the Inactivation of Clostridium sporogenes Spores by Pressure-Assisted Thermal Processing
Ahn. Ju-Hee, Balasubramaniam. V.M. 한국미생물생명공학회 Journal of microbiology and biotechnology 8 Pages
한국미생물생명공학회 Journal of microbiology and biotechnology 2007, Vol.17 No.4 616-623 (8 pages)
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Mechanical and thermal properties of MWCNT-reinforced epoxy nanocomposites by vacuum assisted resin transfer molding
Si-Eun Lee, Seho Cho, Young-Seak Lee 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 4 32-37 (6 pages)
Sci Technol, 65, 491 (2005). http://dx.doi.org/10.1016/j. compscitech.2004.11.003. [25] Thostenson ET, Chou TW. Aligned multi-walled carbon nanotube- reinforced composites: processing and mechanical characteriza- tion. J Phys D, 35, L77 (2002). http://dx.doi.org/10.1088/0022- 3727/35/16/103. [26] Basara C, Yilmazer U, Bayram G. Synthesis and characteriza- tion of epoxy based nanocomposites. J Appl... vacuum assisted resin transfer molding (VARTM) method. The mechanical properties, fracture surface morphologies, and thermal stabilities of these nanocomposites are evaluated for epoxy resins with various amounts of MWCNTs. Composites consisting of different amounts of MWCNTs displayed an increase of the work of adhesion between the MWCNTs and the matrix, which improved both the tensile and impact strengths of the composites. The tensile and impact strengths of the MWCNT/epoxy composite improved... -
Modifications of mechanical, thermal, and electrical characteristics of epoxy through dispersion of multi-walled carbon nanotubes in supercritical carbon dioxide
MGH ZAIDI, Sanjeev Joshi, Manoj Kumar, Deepak Sharma, Ashwin Kumar, Sarfaraz Alam, Prakash Sah 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.4 4 218-227 (10 pages)
proper- ties and the electrical conductivity of CECs have been investigated. Key words: supercritical carbon dioxide, multi-walled carbon nanotube, epoxy, nanocom- posites, mechanical and thermal properties 1. Introduction The importance of supercritical fuids, particularly supercritical carbon dioxide (SCC), as a green friendly alternative to organic solvents for environmentally benign... -
Catalytic hydrogenation-assisted preparation of melt spinnable pitches from petroleum residue for making mesophase pitch based carbon fibers
Dong Hun Lee, Jisu Choi, Young Se Oh, Yoong Ahm Kim, Kap Seung Yang, Ho Jin Ryu, Yong Jung Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 4 28-35 (8 pages)
Brooks JD, Taylor GH. The Formation of Some Graphitizing Car- bons. In: Walker PI Jr, ed. Chemistry and Physics of Carbon, Vol. 4, Marcel Dekker, New York, 243 (1968). [13] Edie DD. The effect of processing on the structure and properties of carbon fbers. Carbon, 36, 345 (1998). https://doi.org/10.1016/ S0008-6223(97)00185-1. [14] Mochida I, Nakamura EI, Maeda K, Takeshita K. Carbonization of... We demonstrated an effective way of preparing melt spinnable mesophase pitches via catalytic hydrogenation of petroleum residue (fluidized catalytic cracking-decant oil) and their subsequent thermal soaking. The mesophase pitches thus obtained were analyzed in terms of their viscosity, elemental composition, solubility, molecular weight, softening point and optical texture. We found that zeolite-induced catalytic hydrogenation under high hydrogen pressure contributed to a large variation in the... -
Microwave-assisted pretreatment technologies for the conversion of lignocellulosic biomass to sugars and ethanol: a review
Pradeep Puligundla, Sang-Eun Oh, Chulkyoon Mok 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 1 1-10 (10 pages)
microwave-based pretreatments include faster treatment time, selective processing, instantaneous control, and acceleration of the reaction rate. The present review provides insights into the current re- search and advantages of using microwave-assisted pretreatment technologies for the con- version of lignocellulosic biomass to fermentable sugars in the process of cellulosic ethanol production.... Acid and alkali pretreatments assisted by microwave heating meanwhile have been widely used for different types of lignocellulosic biomass conversion. Additional advantages of microwave-based pretreatments include faster treatment time, selective processing, instantaneous control, and acceleration of the reaction rate. The present review provides insights into the current research and advantages of using microwave-assisted pretreatment technologies for the conversion of lignocellulosic biomass... -
Influence of hot-pressing pressure on the densification of short-carbon-fiber-reinforced, randomly oriented carbon/carbon composite
Thakur Sudesh Kumar Raunija and Sharad Chandra Sharma 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 4 25-33 (9 pages)
the matrix precursors. The higher the carbon yield, the fewer densifcation cycles needed; hence, the shorter the processing time. Though resins have been developed that can give carbon- yield near 90% [3,4], the pitch-based matrix precursors are the ones that give the highest carbon yield among all the matrix precursors available for this purpose. However, the derivation rate of carbon from... The prime objective of this research was to study the influence of hot-pressing pressure and matrix-to-reinforcement ratio on the densification of short-carbon-fiber-reinforced, randomly oriented carbon/carbon-composite. Secondary objectives included determination of the physical and mechanical properties of the resulting composite. The ‘hybrid carbon-fiberreinforced mesophase-pitch-derived carbon-matrix’ composite was fabricated by hot pressing. During hot pressing, pressure was varied from 5... -
Application and evaluation of boron nitride-assisted liquid silicon infiltration for preparing Cf/SiC composites
김진훈, EuigyungJeong, 김세영, 이영식 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2011, Vol.12 No.2 10 116-119 (4 pages)
[10] Michaud V, Mortensen A. Infltration processing of fbre reinforced composites: governing phenomena. Composites Part A: Appl Sci Manuf, 32, 981 (2001). doi: 10.1016/S1359-835X(01)00015-X. [11] Zhang XH, Wang Z, Hu P, Han WB, Hong CQ. Mechanical prop- erties and thermal shock resistance of ZrB2-SiC ceramic tough- ened with graphite fake and SiC whiskers. Scripta Mater, 61, 809 (2009). doi:... -
Preparation of photoresist-derived carbon micropatterns by proton ion beam lithography and pyrolysis
Hui-Gyun Nam, Jin-Mook Jung, In-Tae Hwang, Junhwa Shin, Chang-Hee Jung, Jae-Hak Choi 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 8 55-61 (7 pages)
Teo EJ, Breese MBH. Ion beam lithography and nanofabrication: a review. Int J Nanosci, 4, 269 (2005). https://doi.org/10.1142/S0219581X05003139. [24] Lee H, Rajagopalan R, Robinson J, Pantano CG. Processing and characterization of ultrathin carbon coatings on glass. ACS Appl Mater Interfaces, 1, 927 (2009). https://doi.org/10.1021/ am900032p. [25] Wang SJ, Geng Y, Zheng Q, Kim JK. Fabrication... Carbon micropatterns (CMs) were fabricated from a negative-type SU-8 photoresist by proton ion beam lithography and pyrolysis. Well-defined negative-type SU-8 micropatterns were formed by proton ion beam lithography at the optimized fluence of 1×1015 ions cm?2 and then pyrolyzed to form CMs. The crosslinked network structures formed by proton irradiation were converted to pseudo-graphitic structures by pyrolysis. The fabricated CMs showed a good electrical conductivity of 1.58×102 S cm?1 and a... -
Preparation and characterization of carbon fiber-reinforced thermosetting composites: a review
Fan-Long Jin, Soo-Jin Park 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 1 67-77 (11 pages)
by a vacuum bagging method used in conventional composite processing [64,65]. 3.2.3. Preparation method III Here, the CFs were placed in the middle of a standard dog- bone silicon mold. Both ends of the CFs were stuck to the mold frame to hold them straight along the mold. The epoxy resin was heated and then stirred at a low speed with a hardener. Subsequently, the CFs were brushed with the... Carbon fibers (CFs) have a unique combination of properties which allow them to be widely used as reinforcing materials in advanced polymer composites. The mechanical properties of CF-reinforced polymer composites are governed mainly by the quality of interfacial adhesion between the CFs and the polymer matrix. Surface treatments of CFs are generally carried out to introduce chemical functional groups on the fiber surfaces, which provide the ability to control the surface characteristics of CFs.... -
Properties of multi-walled carbon nanotube reinforced epoxy composites fabricated by using sonication and shear mixing
Min Ye Koo, Hon Chung Shin, Won-Seok Kim and Gyo Woo Lee 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 4 255-261 (7 pages)
work is properly cited. Carbon-allotropes: synthesis methods, applications and future perspectives P. S. Karthik, A. L. Himaja and Surya Prakash Singh Overlook of carbonaceous adsorbents and processing methods for elemental mercury removal Kyong-Min Bae, Byung-Joo Kim and Soo-Jin Park KCS Korean Carbon Society carbonlett.org pISSN: 1976-4251 eISSN: 2233-4998 REVIEWS VOL. 15 NO. 4 October 31... of 0.6 wt% showed higher thermal conductivity than that of the other specimens. On the other hand, in the measurement of thermal expansion, specimens having 0.4 and 0.6 wt% filler contents showed a lower value than that of the other specimens. The electrical conductivities also increased with increasing content of nanotube filler. Based on the measured and evaluated properties of the composites, it is believed that the simple and efficient fabrication process used in this study was sufficient to...